10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

ý QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2019

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 001-34057

AGNC INVESTMENT CORP.

(Exact name of registrant as specified in its charter)

__________________________________________________

Delaware	26-1701984
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

2 Bethesda Metro Center, 12th Floor

Bethesda, Maryland 20814

(Address of principal executive offices)

(301) 968-9315

(Registrant’s telephone number, including area code)

 __________________________________________________

Indicate by check mark whether the registrant (1) has filed all reports to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ý    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).   Yes  ý    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See definition of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	ý		Accelerated filer	o
Non-accelerated filer	o	(Do not check if a smaller reporting company)	Smaller Reporting Company	o
Emerging growth company	o

If an emerging growth company, indicate by check mark if registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  ý  

The number of shares of the issuer's common stock, $0.01 par value, outstanding as of April 30, 2019 was 536,412,404.

AGNC INVESTMENT CORP.

TABLE OF CONTENTS

PART I.	FINANCIAL INFORMATION
Item 1.	Financial Statements	2
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	24
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	41
Item 4.	Controls and Procedures	45
PART II.	OTHER INFORMATION
Item 1.	Legal Proceedings	45
Item 1A.	Risk Factors	45
Item 2.	Properties	45
Item 3.	Defaults upon Senior Securities	45
Item 4.	Mine Safety Disclosures	45
Item 5.	Other Information	45
Item 6.	Exhibits	46
Signatures		48

1

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

AGNC INVESTMENT CORP.

CONSOLIDATED BALANCE SHEETS

(in millions, except per share data)

	March 31, 2019			December 31, 2018
	(Unaudited)
Assets:
Agency securities, at fair value (including pledged securities of $89,471 and $78,619, respectively)	$	93,044		$	82,291
Agency securities transferred to consolidated variable interest entities, at fair value (pledged securities)	425			436
Credit risk transfer securities, at fair value (including pledged securities of $142 and $141, respectively)	1,129			1,012
Non-Agency securities, at fair value (including pledged securities of $45 and $45, respectively)	672			548
U.S. Treasury securities, at fair value (including pledged securities of $121 and $0, respectively)	121			46
Cash and cash equivalents	929			921
Restricted cash	517			599
Derivative assets, at fair value	253			273
Receivable for investment securities sold (pledged securities)	439			489
Receivable under reverse repurchase agreements	20,430			21,813
Goodwill	526			526
Other assets	322			287
Total assets	$	118,807		$	109,241
Liabilities:
Repurchase agreements	$	86,685		$	75,717
Debt of consolidated variable interest entities, at fair value	266			275
Payable for investment securities purchased	1,125			1,204
Derivative liabilities, at fair value	53			84
Dividends payable	107			106
Obligation to return securities borrowed under reverse repurchase agreements, at fair value	19,275			21,431
Accounts payable and other liabilities	795			518
Total liabilities	108,306			99,335
Stockholders' equity:
7.750% Series B Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $175)	169			169
7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $325)	315			315
6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $235)	227			—
Common stock - $0.01 par value; 900 shares authorized; 536.3 shares issued and outstanding	5			5
Additional paid-in capital	13,795			13,793
Retained deficit	(3,467		)	(3,433		)
Accumulated other comprehensive loss	(543		)	(943		)
Total stockholders' equity	10,501			9,906
Total liabilities and stockholders' equity	$	118,807		$	109,241

See accompanying notes to consolidated financial statements.

2

AGNC INVESTMENT CORP.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(in millions, except per share data)

	Three Months Ended March 31,
	2019			2018
Interest income:
Interest income	$	705		$	431
Interest expense	541			206
Net interest income	164			225
Other gain (loss), net:
Gain (loss) on sale of investment securities, net	60			(2		)
Unrealized gain (loss) on investment securities measured at fair value through net income, net	1,060			(523		)
Gain (loss) on derivative instruments and other securities, net	(1,000		)	738
Management fee income	—			4
Total other gain, net:	120			217
Expenses:
Compensation and benefits	10			10
Other operating expense	9			8
Total operating expense	19			18
Net income	265			424
Dividend on preferred stock	10			9
Net income available to common stockholders	$	255		$	415
Net income	$	265		$	424
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net	400			(621		)
Comprehensive income (loss)	665			(197		)
Dividend on preferred stock	10			9
Comprehensive income (loss) available (attributable) to common stockholders	$	655		$	(206	)
Weighted average number of common shares outstanding - basic	536.7			391.3
Weighted average number of common shares outstanding - diluted	537.2			391.5
Net income per common share - basic	$	0.48		$	1.06
Net income per common share - diluted	$	0.47		$	1.06
Dividends declared per common share	$	0.54		$	0.54

See accompanying notes to consolidated financial statements.

3

AGNC INVESTMENT CORP.

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY

(Unaudited)

(in millions)

	7.750% Series B Cumulative Redeemable Preferred Stock		7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock		6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock		Common Stock			Additional Paid-in Capital		Retained Deficit			Accumulated Other Comprehensive Income (Loss)			Total
							Shares	Amount
Balance, December 31, 2017	$	169	$	315	—		391.3	$	4	$	11,173	$	(2,562	)	$	(345	)	$	8,754
Net income	—		—		—		—	—		—		424			—			424
Other comprehensive loss:
Unrealized loss on available-for-sale securities, net	—		—		—		—	—		—		—			(621		)	(621		)
Stock-based compensation	—		—		—		—	—		1		—			—			1
Preferred dividends declared	—		—		—		—	—		—		(9		)	—			(9		)
Common dividends declared	—		—		—		—	—		—		(211		)	—			(211		)
Balance, March 31, 2018	$	169	$	315	$	—	391.3	$	4	$	11,174	$	(2,358	)	$	(966	)	$	8,338
Balance, December 31, 2018	$	169	$	315	—		536.3	$	5	$	13,793	$	(3,433	)	$	(943	)	$	9,906
Net income	—		—		—		—	—		—		265			—			265
Other comprehensive income:
Unrealized gain on available-for-sale securities, net	—		—		—		—	—		—		—			400			400
Stock-based compensation	—		—		—		—	—		2		—			—			2
Issuance of preferred stock	—		—		227		—	—		—		—			—			227
Preferred dividends declared	—		—		—		—	—		—		(10		)	—			(10		)
Common dividends declared	—		—		—		—	—		—		(289		)	—			(289		)
Balance, March 31, 2019	$	169	$	315	$	227	536.3	$	5	$	13,795	$	(3,467	)	$	(543	)	$	10,501

See accompanying notes to consolidated financial statements.

4

AGNC INVESTMENT CORP.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in millions) 

	Three Months Ended March 31,
	2019			2018
Operating activities:
Net income	$	265		$	424
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and discounts on mortgage-backed securities, net	142			69
Amortization of intangible assets	—			1
Stock-based compensation	2			1
(Gain) loss on sale of investment securities, net	(60		)	2
Unrealized (gain) loss on investment securities measured at fair value through net income, net	(1,060		)	523
(Gain) loss on derivative instruments and other securities, net	1,000			(738		)
(Increase) decrease in other assets	(35		)	3
Increase in accounts payable and other accrued liabilities	75			3
Net cash provided by operating activities	329			288
Investing activities:
Purchases of Agency mortgage-backed securities	(16,038		)	(2,287		)
Purchases of credit risk transfer and non-Agency securities	(499		)	(215		)
Proceeds from sale of Agency mortgage-backed securities	4,694			1,181
Proceeds from sale of credit risk transfer and non-Agency securities	297			208
Principal collections on Agency mortgage-backed securities	1,889			1,661
Principal collections on credit risk transfer and non-Agency securities	5			—
Payments on U.S. Treasury securities	(7,550		)	(1,345		)
Proceeds from U.S. Treasury securities	5,103			1,403
Net proceeds from reverse repurchase agreements	1,526			231
Net proceeds from (payments on) derivative instruments	(714		)	466
Net payments on other investing activity	—			(16		)
Net cash (used in) provided by investing activities	(11,287		)	1,287
Financing activities:
Proceeds from repurchase arrangements	930,289			243,168
Payments on repurchase agreements	(919,321		)	(244,507		)
Payments on debt of consolidated variable interest entities	(13		)	(21		)
Net proceeds from preferred stock issuance	227			—
Cash dividends paid	(298		)	(220		)
Net cash (used in) provided by financing activities	10,884			(1,580		)
Net change in cash, cash equivalents and restricted cash	(74		)	(5		)
Cash, cash equivalents and restricted cash at beginning of period	1,520			1,363
Cash, cash equivalents and restricted cash at end of period	$	1,446		$	1,358

See accompanying notes to consolidated financial statements.

5

AGNC INVESTMENT CORP.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1. Basis of Presentation

The unaudited interim consolidated financial statements of AGNC Investment Corp. (referred throughout this report as the "Company," "we," "us" and "our") are prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair presentation of financial statements for the interim period have been included. The current period’s results of operations are not necessarily indicative of results that ultimately may be achieved for the year.

Our unaudited interim consolidated financial statements include the accounts of all of our wholly-owned subsidiaries and variable interest entities for which we are the primary beneficiary. Significant intercompany accounts and transactions have been eliminated.

Note 2. Organization

We were organized in Delaware on January 7, 2008 and commenced operations on May 20, 2008 following the completion of our initial public offering. Our common stock is traded on The Nasdaq Global Select Market under the symbol "AGNC."

We are internally-managed, and our principal objective is to provide our stockholders with attractive risk-adjusted returns through a combination of monthly dividends and tangible net book value accretion. We generate income from the interest earned on our investments, net of associated borrowing and hedging costs, and net realized gains and losses on our investment and hedging activities.

We operate to qualify to be taxed as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). As a REIT, we are required to distribute annually 90% of our taxable income. As a REIT, we will generally not be subject to U.S. federal or state corporate taxes on our taxable income to the extent that we distribute our annual taxable income to our stockholders on a timely basis. It is our intention to distribute 100% of our taxable income, after application of available tax attributes, within the limits prescribed by the Internal Revenue Code, which may extend into the subsequent tax year.

We invest primarily in Agency residential mortgage-backed securities ("Agency RMBS") for which the principal and interest payments are guaranteed by a U.S. Government-sponsored enterprise ("GSE") or a U.S. Government agency. We also invest in other types of mortgage and mortgage-related securities, such as credit risk transfer ("CRT") securities and non-Agency residential and commercial mortgage-backed securities ("non-Agency RMBS" and "CMBS," respectively), where repayment of principal and interest is not guaranteed by a GSE or U.S. Government agency and in other investments in, or related to, the housing, mortgage or real estate markets. We fund our investments primarily through borrowings structured as repurchase agreements.

Note 3. Summary of Significant Accounting Policies

Investment Securities

Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae").

CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans.

6

Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, overcollateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS.

All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities acquired after fiscal year 2016. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"). Unrealized gains and losses on securities for which we elected the fair value option or are classified as trading are reported in net income through other gain (loss) during the period in which they occur. Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gains or losses to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period, as the fair value changes for these assets are presented in a manner consistent with the presentation and timing of the fair value changes of our derivative instruments.

We estimate the fair value of our investment securities based on prices provided by multiple third-party pricing services and non-binding dealer quotes (collectively "pricing sources"). These pricing sources use various valuation approaches, including market and income approaches, using "Level 2" inputs. The pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value of our Agency RMBS based on observed quoted prices for forward contracts in the Agency RMBS "to-be-announced" market ("TBA securities") of the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, which may include maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. The pricing sources may also utilize discounted cash flow model-derived pricing techniques to estimate the fair value of investment securities. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. We review the pricing estimates obtained from the pricing sources and perform procedures to validate their reasonableness. Refer to Note 8 for further discussion of fair value measurements.

We evaluate our investments designated as available-for-sale for other-than-temporary impairment ("OTTI") on at least a quarterly basis. The determination of whether a security is other-than-temporarily impaired may involve judgments and assumptions based on subjective and objective factors. When a security is impaired, an OTTI is considered to have occurred if any one of the following three conditions exists as of the financial reporting date: (i) we intend to sell the security (that is, a decision has been made to sell the security), (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis or (iii) we do not expect to recover the security's amortized cost basis, even if we do not intend to sell the security and it is not more likely than not that we will be required to sell the security. A general allowance for unidentified impairments in a portfolio of securities is not permitted.

Interest Income

Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs.

We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate the reasonableness of the third-party estimates. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previously estimated future prepayments and (ii) actual prepayments to date and our current estimated future prepayments. If the actual and estimated future prepayment experience differs from our prior estimate of prepayments, we are required to record an adjustment in the current period to the amortization or accretion of premiums and discounts for the cumulative difference in the effective yield through the reporting date.

7

At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.

Repurchase Agreements 

We finance the acquisition of securities for our investment portfolio primarily through repurchase transactions under master repurchase agreements. Pursuant to ASC Topic 860, Transfers and Servicing, we account for repurchase transactions as collateralized financing transactions, which are carried at their contractual amounts (cost), plus accrued interest. Our repurchase agreements typically have maturities of less than one year but may extend up to five years or more. Interest rates on our repurchase agreements generally correspond to one or three-month LIBOR plus or minus a fixed spread. The fair value of our repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

Reverse Repurchase Agreements and Obligation to Return Securities Borrowed under Reverse Repurchase Agreements

We borrow securities to cover short sales of U.S. Treasury securities through reverse repurchase transactions under our master repurchase agreements (see Derivative Instruments below). We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. Our reverse repurchase agreements typically have maturities of 30 days or less. The fair value of our reverse repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

Derivative Instruments

We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities as well as to periodically reduce our exposure to Agency RMBS.

We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Cash receipts and payments related to derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section.

The use of derivative instruments creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. Our derivative agreements require that we post or receive collateral to mitigate such risk. We also attempt to minimize our risk of loss by limiting our counterparties to registered central clearing exchanges and major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.

Interest rate swap agreements

We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate based

8

on one or three-month LIBOR ("payer swaps") with terms up to 20 years. The majority of our interest rate swaps are centrally cleared through a registered commodities exchange. We value centrally cleared interest rate swaps using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including LIBOR, swap rates and the forward yield curve. Our centrally cleared swaps require that we post an "initial margin" amount determined by the clearing exchange, which is generally intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability.

We value non-centrally cleared swaps using a combination of third-party valuations obtained from pricing services and the swap counterparty. The third-party valuations are model-driven using observable inputs, including LIBOR, swap rates and the forward yield curve. We also consider both our own and our counterparties' nonperformance risk in estimating the fair value of our interest rate swaps. In considering the effect of nonperformance risk, we assess the impact of netting and credit enhancements, such as collateral postings and guarantees, and have concluded that our own and our counterparty risk is not significant to the overall valuation of these agreements.

Interest rate swaptions

We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The premium paid for interest rate swaptions is reported as an asset in our consolidated balance sheets. We estimate the fair value of interest rate swaptions using a combination of inputs from counterparty and third-party pricing models based on the fair value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option, adjusted for non-performance risk, if any. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid.

TBA securities

A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing.

We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. We estimate the fair value of TBA securities based on similar methods used to value our Agency RMBS securities.

U.S. Treasury securities

We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We borrow U.S. Treasury securities under reverse repurchase agreements to cover short sales of U.S. Treasury securities. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Loss Contingencies

We evaluate the existence of any pending or threatened litigation or other potential claims against the Company in accordance with ASC Topic 450, Contingencies, which requires that we assess the likelihood and range of potential outcomes of any such

9

matters. We are the defendant in three stockholder derivative lawsuits alleging that certain of our current and former directors and officers breached fiduciary duties and wasted corporate assets relating to past renewals of the management agreement with our former external manager and the internalization of our management on July 1, 2016. Although the outcomes of these cases cannot be predicted with certainty, we do not believe that these cases have merit or will result in a material liability, and, as of March 31, 2019, we did not accrue a loss contingency related to these matters.

Recent Accounting Pronouncements

We consider the applicability and impact of all Accounting Standards Updates ("ASUs") issued by the Financial Accounting Standards Board. ASUs not listed below were determined to be either not applicable, are not expected to have a significant impact on our consolidated financial statements when adopted or did not have a significant impact on our consolidated financial statements upon adoption.

ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Allowances for credit losses on available-for-sale debt securities will be recognized, rather than direct reductions in the amortized cost of the investments. The new model also requires the estimation of lifetime expected credit losses and corresponding recognition of allowance for losses on trade and other receivables, held-to-maturity debt securities, loans, and other instruments held at amortized cost. The ASU requires certain recurring disclosures and is effective for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2019, with early adoption permitted for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2018. ASU 2016-13 is not expected to have a significant impact on our consolidated financial statements.

Note 4. Investment Securities

As of March 31, 2019 and December 31, 2018, our investment portfolio consisted of $95.3 billion and $84.3 billion of investment securities, at fair value, respectively, and $7.0 billion and $7.3 billion of TBA securities, at fair value, respectively. Our TBA position is reported at its net carrying value of $70 million and $70 million as of March 31, 2019 and December 31, 2018, respectively, in derivative assets / (liabilities) on our accompanying consolidated balance sheets. The net carrying value of our TBA position represents the difference between the fair value of the underlying Agency security in the TBA contract and the cost basis or the forward price to be paid or received for the underlying Agency security.

As of March 31, 2019 and December 31, 2018, our investment securities had a net unamortized premium balance of $3.0 billion and $2.9 billion, respectively.

The following tables summarize our investment securities as of March 31, 2019 and December 31, 2018, excluding TBA securities, (dollars in millions). Details of our TBA securities as of each of the respective dates are included in Note 6.

	March 31, 2019				December 31, 2018
Investment Securities	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Agency RMBS:
Fixed rate	$	92,374	$	92,502	$	83,047	$	81,753
Adjustable rate	199		201		212		213
CMO	555		555		588		583
Interest-only and principal-only strips	166		179		172		178
Multifamily	31		32		—		—
Total Agency RMBS	93,325		93,469		84,019		82,727
Non-Agency RMBS	313		319		264		266
CMBS	343		353		280		282
CRT securities	1,109		1,129		1,006		1,012
Total investment securities	$	95,090	$	95,270	$	85,569	$	84,287

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	March 31, 2019
	Agency RMBS									Non-Agency
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	16,709		$	5,493		$	23		$	6		$	—		$	—		$	22,231
Unamortized discount	(11		)	(2		)	—			—			—			—			(13		)
Unamortized premium	849			325			—			—			—			—			1,174
Amortized cost	17,547			5,816			23			6			—			—			23,392
Gross unrealized gains	19			5			1			—			—			—			25
Gross unrealized losses	(402		)	(166		)	—			—			—			—			(568		)
Total available-for-sale securities, at fair value	17,164			5,655			24			6			—			—			22,849
Securities remeasured at fair value through earnings:
Par value	42,546			25,501			—			317			409			1,087			69,860
Unamortized discount	(74		)	(6		)	—			(11		)	(70		)	(13		)	(174		)
Unamortized premium	1,138			834			—			—			5			35			2,012
Amortized cost	43,610			26,329			—			306			344			1,109			71,698
Gross unrealized gains	620			340			—			7			10			22			999
Gross unrealized losses	(172		)	(101		)	—			—			(1		)	(2		)	(276		)
Total securities remeasured at fair value through earnings	44,058			26,568			—			313			353			1,129			72,421
Total securities, at fair value	$	61,222		$	32,223		$	24		$	319		$	353		$	1,129		$	95,270
Weighted average coupon as of March 31, 2019	3.83		%	3.92		%	3.72		%	3.86		%	4.65		%	5.69		%	3.88		%
Weighted average yield as of March 31, 2019 1	3.24		%	3.30		%	2.06		%	4.22		%	4.61		%	4.75		%	3.29		%

 ________________________________

1. Incorporates a weighted average future constant prepayment rate assumption of 10.5% based on forward rates as of March 31, 2019.

	December 31, 2018
	Agency RMBS									Non-Agency
Investment Securities	Fannie  Mae			Freddie Mac			Ginnie  Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	17,591		$	5,673		$	25		$	6		$	—		$	—		$	23,295
Unamortized discount	(10		)	(2		)	—			—			—			—			(12		)
Unamortized premium	912			343			—			—			—			—			1,255
Amortized cost	18,493			6,014			25			6			—			—			24,538
Gross unrealized gains	4			2			1			—			—			—			7
Gross unrealized losses	(686		)	(264		)	—			—			—			—			(950		)
Total available-for-sale securities, at fair value	17,811			5,752			26			6			—			—			23,595
Securities remeasured at fair value through earnings:
Par value	39,453			18,428			—			268			281			968			59,398
Unamortized discount	(78		)	(9		)	—			(10		)	(6		)	—			(103		)
Unamortized premium	1,055			638			—			—			5			38			1,736
Amortized cost	40,430			19,057			—			258			280			1,006			61,031
Gross unrealized gains	223			57			—			2			3			18			303
Gross unrealized losses	(386		)	(243		)	—			—			(1		)	(12		)	(642		)
Total securities remeasured at fair value through earnings	40,267			18,871			—			260			282			1,012			60,692
Total securities, at fair value	$	58,078		$	24,623		$	26		$	266		$	282		$	1,012		$	84,287
Weighted average coupon as of December 31, 2018	3.82		%	3.87		%	3.37		%	3.83		%	4.58		%	5.86		%	3.86		%
Weighted average yield as of December 31, 2018 1	3.28		%	3.28		%	2.04		%	4.22		%	4.68		%	5.16		%	3.31		%

 ________________________________

1. Incorporates a weighted average future constant prepayment rate assumption of 7.9% based on forward rates as of December 31, 2018.

11

As of March 31, 2019 and December 31, 2018, our investments in CRT and non-Agency securities had the following credit ratings:

	March 31, 2019						December 31, 2018
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS		CMBS		CRT		RMBS		CMBS
AAA	$	—	$	156	$	62	$	—	$	160	$	52
AA	—		42		190		—		17		152
A	17		45		33		17		33		15
BBB	54		63		58		25		43		53
BB	412		8		10		492		8		10
B	600		2		—		453		2		—
Not Rated	46		3		—		25		3		—
Total	$	1,129	$	319	$	353	$	1,012	$	266	$	282

 ________________________________

1. Represents the lowest of Standard and Poor's ("S&P"), Moody's, Fitch, DBRS, Kroll Bond Rating Agency ("KBRA") and Morningstar credit ratings, stated in terms of the S&P equivalent rating as of each date.

Our CRT securities reference the performance of loans underlying Agency RMBS issued by Fannie Mae or Freddie Mac, which were subject to their underwriting standards. As of March 31, 2019, our CRT securities had floating and fixed rate coupons ranging from 3.0% to 8.8%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from 3.7% to 4.9%. As of December 31, 2018, our CRT securities had floating rate coupons ranging from 3.9% to 9.5%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from 3.8% to 4.8%.

The actual maturities of our investment securities are generally shorter than their stated contractual maturities. The actual maturities of our Agency and high credit quality non-Agency RMBS are primarily affected by principal prepayments and to a lesser degree the contractual lives of the underlying mortgages and periodic contractual principal repayments. The actual maturities of our credit-oriented investments are primarily impacted by their contractual lives and default and loss recovery rates. As of March 31, 2019 and December 31, 2018, the weighted average expected constant prepayment rate ("CPR") over the remaining life of our Agency and high credit quality non-Agency RMBS investment portfolio was 10.5% and 7.9%, respectively. Our estimates can differ materially for different securities and thus our individual holdings have a wide range of projected CPRs. The following table summarizes our investments as of March 31, 2019 and December 31, 2018 according to their estimated weighted average life classification (dollars in millions):

	March 31, 2019						December 31, 2018
Estimated Weighted Average Life of Investment Securities	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield
≥ 1 year and ≤ 3 years	$	2,452	$	2,461	3.94%	2.83%	$	1,690	$	1,716	3.99%	2.64%
> 3 years and ≤ 5 years	18,438		18,225		3.85%	3.35%	5,518		5,586		3.35%	2.73%
> 5 years and ≤10 years	74,329		74,354		3.89%	3.29%	72,503		73,588		3.92%	3.37%
> 10 years	51		50		3.78%	4.12%	4,576		4,679		3.57%	3.30%
Total	$	95,270	$	95,090	3.88%	3.29%	$	84,287	$	85,569	3.86%	3.31%

The following table presents the gross unrealized loss and fair values of securities classified as available-for-sale by length of time that such securities have been in a continuous unrealized loss position as of March 31, 2019 and December 31, 2018 (in millions):

	Unrealized Loss Position For
	Less than 12 Months					12 Months or More					Total
Securities Classified as Available-for-Sale	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
March 31, 2019	$	108	$	(1	)	$	20,119	$	(567	)	$	20,227	$	(568	)
December 31, 2018	$	4,783	$	(72	)	$	18,231	$	(878	)	$	23,014	$	(950	)

We did not recognize OTTI charges on our investment securities during the periods presented on our consolidated statements of operations. As of the end of each respective reporting period, a decision had not been made to sell securities in an unrealized loss position and we did not believe it was more likely than not that we would be required to sell such securities before recovery of their amortized cost basis. The unrealized losses on our securities were not due to credit losses given the GSE or U.S. Government

12

agency guarantees, but rather were due to changes in interest rates and prepayment expectations. However, as we continue to actively manage our portfolio, we may recognize additional realized losses on our investment securities upon selecting specific securities to sell.

Gains and Losses on Sale of Investment Securities

The following table is a summary of our net gain (loss) from the sale of investment securities for the three months ended March 31, 2019 and 2018 by investment classification of accounting (in millions):

	Three Months Ended March 31,
	2019									2018
Investment Securities	Available-for-Sale Securities 2			Fair Value Option Securities			Total			Available-for-Sale Securities 2			Fair Value Option Securities			Total
Investment securities sold, at cost	$	(339	)	$	(4,562	)	$	(4,901	)	$	(387	)	$	(1,003	)	$	(1,390	)
Proceeds from investment securities sold 1	335			4,626			4,961			388			1,000			1,388
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)
Gross gain on sale of investment securities	$	—		$	66		$	66		$	3		$	7		$	10
Gross loss on sale of investment securities	(4		)	(2		)	(6		)	(2		)	(10		)	(12		)
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)

  ________________________________

1. Proceeds include cash received during the period, plus receivable for investment securities sold during the period as of period end.

2. See Note 10 for a summary of changes in accumulated OCI.  

Consolidated Variable Interest Entities

As of March 31, 2019 and December 31, 2018, our consolidated financial statements reflect the consolidation of certain variable interest entities ("VIEs") for which we have determined we are the primary beneficiary. The consolidated VIEs consist of CMO trusts backed by fixed or adjustable-rate Agency RMBS. Fannie Mae or Freddie Mac guarantees the payment of interest and principal and acts as the trustee and administrator of their respective securitization trusts. Accordingly, we are not required to provide the beneficial interest holders of the CMO securities any financial or other support. Our maximum exposure to loss related to our involvement with the CMO trusts is the fair value of the CMO securities and interest and principal-only securities held by us, less principal amounts guaranteed by Fannie Mae and Freddie Mac.

Note 5. Repurchase Agreements and Other Debt

Repurchase Agreements

We pledge our securities as collateral under our borrowings structured as repurchase agreements with financial institutions. Interest rates on our borrowings are generally based on LIBOR plus or minus a margin and amounts available to be borrowed are dependent upon the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, type of security and liquidity conditions within the banking, mortgage finance and real estate industries. If the fair value of our pledged securities declines, lenders will typically require us to post additional collateral or pay down borrowings to re-establish agreed upon collateral requirements, referred to as "margin calls." Similarly, if the fair value of our pledged securities increases, lenders may release collateral back to us. As of March 31, 2019, we had met all margin call requirements. For additional information regarding our pledged assets, please refer to Note 7.

As of March 31, 2019 and December 31, 2018, we had $86.7 billion and $75.7 billion, respectively, of repurchase agreements outstanding used to fund our investment portfolio and temporary holdings of U.S. Treasury securities. The terms and conditions of our repurchase agreements are typically negotiated on a transaction-by-transaction basis. Our repurchase agreements with original maturities greater than one year have floating interest rates based on an index plus or minus a fixed spread. The following table summarizes our borrowings under repurchase agreements by their remaining maturities as of March 31, 2019 and December 31, 2018 (dollars in millions):

13

	March 31, 2019					December 31, 2018
Remaining Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity
Agency repo:
≤ 1 month	$	44,624	2.94	%	8	$	48,533	2.88	%	9
> 1 to ≤ 3 months	26,690		2.66	%	65	20,991		2.57	%	56
> 3 to ≤ 6 months	2,181		2.67	%	125	2,218		2.65	%	167
> 6 to ≤ 9 months	2,450		2.68	%	204	200		3.19	%	208
> 9 to ≤ 12 months	7,554		2.75	%	288	950		2.80	%	279
> 12 to ≤ 24 months	1,825		2.97	%	516	2,200		2.91	%	438
> 24 to ≤ 36 months	1,000		2.67	%	1,044	625		3.11	%	776
Total Agency repo	86,324		2.82	%	81	75,717		2.79	%	49
U.S. Treasury repo:
> 1 day to ≤ 1 month	361		2.91	%	1	—		—	%	—
Total	$	86,685	2.82	%	81	$	75,717	2.79	%	49

As of March 31, 2019 and December 31, 2018, $18.7 billion and $19.5 billion, respectively, of our repurchase agreements had a remaining maturity of one business day and none of our repurchase agreements were due on demand. As of March 31, 2019, we had $10.7 billion of forward commitments to enter into repurchase agreements, with a weighted average forward start date of 85 days and a weighted average interest rate of 2.55%. As of December 31, 2018 we had $10.7 billion of forward commitments to enter into repurchase agreements, with a weighted average forward start date of 9 days and a weighted average interest rate of 2.90%. As of March 31, 2019 and December 31, 2018, 41% and 35%, respectively, of our repurchase agreement funding was sourced through our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC ("BES"). Amounts sourced through BES include funding from the General Collateral Finance Repo service ("GCF Repo") offered by the Fixed Income Clearing Corporation ("FICC"), which totaled 40% and 33% of our repurchase agreement funding outstanding as of March 31, 2019 and December 31, 2018, respectively.

Reverse Repurchase Agreements

As of March 31, 2019 and December 31, 2018, we had $20.4 billion and $21.8 billion, respectively, of reverse repurchase agreements outstanding used primarily to borrow securities to cover short sales of U.S. Treasury securities, for which we had associated obligations to return borrowed securities at fair value of $19.3 billion and $21.4 billion, respectively. As of March 31, 2019 and December 31, 2018, $5.6 billion and $4.5 billion, respectively, of our reverse repurchase agreements were with the FICC sourced through BES.

Other Debt

As of March 31, 2019 and December 31, 2018, we had debt of consolidated VIEs, at fair value, of $266 million and $275 million, respectively, which had a weighted average interest rate of LIBOR plus 41 and 40 basis points, respectively, and an estimated weighted average life of 5.9 years and 6.1 years, respectively.

Note 6. Derivative and Other Hedging Instruments

We hedge a portion of our interest rate risk primarily utilizing interest rate swaps, interest rate swaptions, U.S. Treasury securities and U.S. Treasury futures contracts. We utilize TBA securities primarily as a means of investing in the Agency securities market. For additional information regarding our derivative instruments and our overall risk management strategy, please refer to the discussion of derivative and other hedging instruments in Note 3.

14

Derivative and Other Hedging Instrument Assets (Liabilities), at Fair Value

The table below summarizes fair value information about our derivative and other hedging instrument assets/(liabilities) as of March 31, 2019 and December 31, 2018 (in millions):

Derivative and Other Hedging Instruments	Balance Sheet Location	March 31, 2019			December 31, 2018
Interest rate swaps	Derivative assets, at fair value	$	151		$	126
Swaptions	Derivative assets, at fair value	11			37
TBA securities	Derivative assets, at fair value	91			110
Total derivative assets, at fair value		$	253		$	273
Interest rate swaps	Derivative liabilities, at fair value	$	(1	)	$	—
TBA securities	Derivative liabilities, at fair value	(21		)	(40		)
U.S. Treasury futures - short	Derivative liabilities, at fair value	(31		)	(44		)
Total derivative liabilities, at fair value		$	(53	)	$	(84	)
U.S. Treasury securities - long	U.S. Treasury securities, at fair value	$	121		$	46
U.S. Treasury securities - short	Obligation to return securities borrowed under reverse repurchase agreements, at fair value	(19,275		)	(21,431		)
Total U.S. Treasury securities, net at fair value		$	(19,154	)	$	(21,385	)

The following tables summarize certain characteristics of our derivative and other hedging instruments outstanding as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019					December 31, 2018
Interest Rate Swaps	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)
≤ 3 years	$	20,900	1.71%	2.69%	1.2	$	19,900	1.63%	2.62%	1.3
> 3 to ≤ 5 years	9,425		2.11%	2.69%	3.7	8,425		2.06%	2.61%	4.0
> 5 to ≤ 7 years	6,225		2.38%	2.67%	5.8	7,875		2.66%	2.66%	6.1
> 7 to ≤ 10 years	9,700		2.30%	2.68%	8.6	10,550		2.36%	2.64%	8.8
> 10 years	1,925		2.30%	2.69%	13.2	4,875		2.77%	2.63%	11.6
Total	$	48,175	2.01%	2.69%	4.3	$	51,625	2.11%	2.63%	5.0

________________________________

1. As of March 31, 2019 and December 31, 2018, notional amount includes forward starting swaps of $4.0 billion and $5.7 billion, respectively, with an average forward start date of 0.2 and 0.5 years, respectively.

2. Average fixed pay rate includes forward starting swaps. Excluding forward starting swaps, the average fixed pay rate was 1.96% and 1.98% as of March 31, 2019 and December 31, 2018, respectively.

15

Swaptions	Option					Underlying Payer Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date 1	Notional Amount		Average Fixed Pay Rate	Average Receive Rate (LIBOR)	Average Term (Years)
March 31, 2019
≤ 1 year	$	71	$	5	4	$	2,050	2.98%	3M	7.0
> 1 year ≤ 2 years	18		6		15	500		2.78%	3M	10.0
Total	$	89	$	11	7	$	2,550	2.94%	3M	7.6
December 31, 2018
≤ 1 year	$	80	$	23	4	$	3,000	2.96%	3M	7.0
> 1 year ≤ 2 years	18		14		18	500		2.78%	3M	10.0
Total	$	98	$	37	6	$	3,500	2.93%	3M	7.4

________________________________

1. As of March 31, 2019 and December 31, 2018, ≤ 1 year notional amount includes $700 million of Bermudan swaptions where the options may be exercised on predetermined dates up to their final exercise date, which is six months prior to the underlying swaps' maturity date.

U.S. Treasury Securities	March 31, 2019									December 31, 2018
Maturity	Face Amount (Short)			Cost Basis 1			Fair Value			Face Amount (Short)			Cost Basis 1			Fair Value
5 years	$	120		$	120		$	121		$	(703	)	$	(706	)	$	(713	)
7 years	(12,990		)	(12,976		)	(13,285		)	(14,357		)	(14,325		)	(14,410		)
10 years	(5,745		)	(5,810		)	(5,990		)	(6,240		)	(6,224		)	(6,262		)
Total U.S. Treasury securities	$	(18,615	)	$	(18,666	)	$	(19,154	)	$	(21,300	)	$	(21,255	)	$	(21,385	)

________________________________

1. As of March 31, 2019 and December 31, 2018, U.S. Treasury securities had a weighted average yield of 2.66%.

U.S. Treasury Futures	March 31, 2019												December 31, 2018
Maturity	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
10 years	$	(1,650	)	$	(2,019	)	$	(2,050	)	$	(31	)	$	(1,650	)	$	(1,969	)	$	(2,013	)	$	(44	)

________________________________

1. Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying U.S. Treasury security) of the U.S. Treasury futures contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

	March 31, 2019												December 31, 2018
TBA Securities by Coupon	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
15-Year TBA securities:
3.0%	$	327		$	328		$	329		$	1		$	567		$	557		$	566		$	9
3.5%	1,969			1,996			2,013			17			1,706			1,708			1,726			18
4.0%	1,083			1,108			1,115			7			1,350			1,370			1,381			11
Total 15-Year TBA securities	3,379			3,432			3,457			25			3,623			3,635			3,673			38
30-Year TBA securities:
3.0%	903			886			899			13			1,028			981			1,003			22
3.5%	3,084			3,095			3,125			30			(2,979		)	(2,943		)	(2,977		)	(34		)
4.0%	(3,148		)	(3,222		)	(3,238		)	(16		)	3,030			3,073			3,089			16
≥ 4.5%	2,604			2,694			2,712			18			2,450			2,506			2,534			28
Total 30-Year TBA securities, net	3,443			3,453			3,498			45			3,529			3,617			3,649			32
Total TBA securities, net	$	6,822		$	6,885		$	6,955		$	70		$	7,152		$	7,252		$	7,322		$	70

________________________________

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1. Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying Agency security) of the TBA contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Gain (Loss) From Derivative Instruments and Other Securities, Net

The following table summarizes changes in our derivative and other hedge portfolio and their effect on our consolidated statements of comprehensive income for the three months ended March 31, 2019 and 2018 (in millions):

Derivative and Other Hedging Instruments	Beginning Notional Amount			Additions		Settlement, Termination, Expiration or Exercise		Ending Notional Amount			Gain/(Loss) on Derivative Instruments and Other Securities, Net 1
Three months ended March 31, 2019:
TBA securities, net	$	7,152		18,442		(18,772	)	$	6,822		$	83
Interest rate swaps	$	51,625		5,350		(8,800	)	$	48,175		(596		)
Payer swaptions	$	3,500		—		(950	)	$	2,550		(27		)
U.S. Treasury securities - short position	$	(21,345	)	(4,770	)	7,380		$	(18,735	)	(425		)
U.S. Treasury securities - long position	$	45		405		(330	)	$	120		—
U.S. Treasury futures contracts - short position	$	(1,650	)	(1,650	)	1,650		$	(1,650	)	(31		)
											$	(996	)
Three months ended March 31, 2018:
TBA securities, net	$	15,474		43,669		(45,507	)	$	13,636		$	(292	)
Interest rate swaps	$	43,700		3,150		(1,600	)	$	45,250		663
Payer swaptions	$	6,650		1,100		(1,000	)	$	6,750		91
U.S. Treasury securities - short position	$	(10,699	)	(662	)	563		$	(10,798	)	212
U.S. Treasury securities - long position	$	—		959		(734	)	$	225		—
U.S. Treasury futures contracts - short position	$	(2,910	)	(2,909	)	3,439		$	(2,380	)	62
											$	736

________________________________

1. Amounts exclude other miscellaneous gains and losses recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Note 7. Pledged Assets

Our funding agreements require us to fully collateralize our obligations under the agreements based upon our counterparties' collateral requirements and their determination of the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, credit quality and liquidity conditions within the investment banking, mortgage finance and real estate industries. Our derivative contracts similarly require us to fully collateralize our obligations under such agreements, which will vary over time based on similar factors as well as our counterparties' determination of the value of the derivative contract. We are typically required to post initial margin upon execution of derivative transactions, such as under our interest rate swap agreements and TBA contracts, and subsequently post or receive variation margin based on daily fluctuations in fair value. Our prime brokerage agreements, pursuant to which we receive custody and settlement services, and the clearing organizations utilized by our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC, also require that we post minimum daily clearing deposits. If we breach our collateral requirements, we will be required to fully settle our obligations under the agreements, which could include a forced liquidation of our pledged collateral.

Our counterparties also apply a "haircut" to our pledged collateral, which means our collateral is valued at slightly less than market value and limits the amount we can borrow against our securities. This haircut reflects the underlying risk of the specific collateral and protects our counterparty against a change in its value. Our agreements do not specify the haircut; rather haircuts are determined on an individual transaction basis. Consequently, our funding agreements and derivative contracts expose us to credit risk relating to potential losses that could be recognized if our counterparties fail to perform their obligations under such agreements. We minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings or to registered clearinghouses and U.S. government agencies, and we monitor our positions with individual counterparties. In the event of a default by a counterparty, we may have difficulty obtaining our assets pledged as collateral to such counterparty and may not receive payments provided for under the terms of our derivative agreements. In the case of centrally cleared instruments, we could be exposed to credit risk if the central clearing agency or a clearing member defaults on its respective obligation to perform under the contract. However, we believe that the risk is minimal due to the clearing exchanges' initial and daily mark-to-market margin requirements, clearinghouse guarantee funds and other resources that are available in the event of a clearing

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member default. As of March 31, 2019, our maximum amount at risk with any counterparty other than the Fixed Income Clearing Corporation related to our repurchase agreements was less than 4% of our tangible stockholders' equity. As of March 31, 2019, approximately 7% of our tangible stockholder's equity was at risk with the Fixed Income Clearing Corporation. Equity at risk is defined as the net carrying value of securities pledged under repurchase agreements, including accrued interest plus any cash or assets on deposit to secure the repurchase obligation, less the amount of the repurchase liability, including accrued interest.

Our International Swaps and Derivatives Association ("ISDA") Master Agreements contain a cross default provision under which a default under the terms of certain of our other indebtedness in excess of certain thresholds causes an event of default under the ISDA Master Agreement. Threshold amounts vary by lender. Following an event of default, we could be required to settle our obligations under the agreements. Additionally, under certain of our ISDA Master Agreements, we could be required to settle our obligations under the agreements if we fail to maintain certain minimum stockholders' equity thresholds or our REIT status or if we fail to comply with limits on our leverage up to certain specified levels. As of March 31, 2019, the fair value of additional collateral that could be required to be posted as a result of the credit-risk-related contingent features being triggered was not material to our financial statements.

Assets Pledged to Counterparties

The following tables summarize our assets pledged as collateral under our funding, derivative and prime broker agreements by type, including securities pledged related to securities sold but not yet settled, as of March 31, 2019 and December 31, 2018 (in millions):

	March 31, 2019
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	89,779	$	425	$	174	$	118	$	90,496
CRT - fair value	142		—		—		—		142
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	617		—		—		—		617
Accrued interest on pledged securities	278		1		1		—		280
Restricted cash and cash equivalents	75		—		442		—		517
Total	$	90,936	$	426	$	617	$	118	$	92,097

	December 31, 2018
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	78,997	$	436	$	174	$	133	$	79,740
CRT - fair value	141		—		—		—		141
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	437		—		—		—		437
Accrued interest on pledged securities	246		1		1		—		248
Restricted cash and cash equivalents	77		—		522		—		599
Total	$	79,943	$	437	$	697	$	133	$	81,210

________________________________

1. Includes repledged assets received as collateral from counterparties.

2. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

3. Includes margin for TBAs cleared through prime brokers and other clearing deposits.

Securities transferred to our consolidated VIEs can only be used to settle the obligations of each respective VIE. However, we may pledge our retained interests in our consolidated VIEs as collateral under our repurchase agreements and derivative contracts. Please refer to Note 4 for additional information regarding our consolidated VIEs.

The following table summarizes our securities pledged as collateral under our repurchase agreements by the remaining maturity of our borrowings, including securities pledged related to sold but not yet settled securities, as of March 31, 2019 and December 31, 2018 (in millions). For the corresponding borrowings associated with the following amounts and the interest rates thereon, refer to Note 5.

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	March 31, 2019						December 31, 2018
Securities Pledged by Remaining Maturity of Repurchase Agreements 1,2	Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities		Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities
≤ 30 days	$	45,947	$	45,673	$	143	$	49,944	$	50,654	$	156
> 30 and ≤ 60 days	10,792		10,758		34		14,586		14,810		46
> 60 and ≤ 90 days	17,282		17,267		53		7,770		7,843		24
> 90 days	15,945		16,108		48		6,882		7,079		21
Total	$	89,966	$	89,806	$	278	$	79,182	$	80,386	$	247

________________________________

1. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

2. Excludes $496 million and $437 million of repledged U.S. Treasury securities received as collateral from counterparties as of March 31, 2019 and December 31, 2018, repsectively.

Assets Pledged from Counterparties

As of March 31, 2019 and December 31, 2018, we had assets pledged to us from counterparties as collateral under our reverse repurchase and derivative agreements summarized in the tables below (in millions).

	March 31, 2019								December 31, 2018
Assets Pledged to AGNC 1	Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total		Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total
U.S. Treasury securities - fair value	$	20,400	$	10	$	30	$	20,440	$	21,876	$	35	$	37	$	21,948
Cash	—		49		—		49		—		129		—		129
Total	$	20,400	$	59	$	30	$	20,489	$	21,876	$	164	$	37	$	22,077

________________________________

1. Includes $496 million and $437 million of repledged U.S. Treasury securities received as collateral from counterparties as of March 31, 2019 and December 31, 2018, respectively.

U.S Treasury securities received as collateral under our reverse repurchase agreements for which we use to cover short sales of U.S. Treasury securities are accounted for as securities borrowing transactions. We recognize a corresponding obligation to return the borrowed securities at fair value on the accompanying consolidated balance sheets based on the value of the underlying borrowed securities as of the reporting date.

Cash collateral received is recognized in cash and cash equivalents with a corresponding amount recognized in accounts payable and other accrued liabilities on the accompanying consolidated balance sheets.

Offsetting Assets and Liabilities

Certain of our repurchase agreements and derivative transactions are governed by underlying agreements that generally provide for a right of setoff under master netting arrangements (or similar agreements), including in the event of default or in the event of bankruptcy of either party to the transactions. We present our assets and liabilities subject to such arrangements on a gross basis in our consolidated balance sheets. The following tables present information about our assets and liabilities that are subject to master netting arrangements and can potentially be offset on our consolidated balance sheets as of March 31, 2019 and December 31, 2018 (in millions):

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	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Received 2
March 31, 2019
Interest rate swap and swaption agreements, at fair value 1	$	162	$	—	$	162	$	(1	)	$	(59	)	$	102
TBA securities, at fair value	91		—		91		(21		)	—			70
Receivable under reverse repurchase agreements	20,430		—		20,430		(17,353		)	(3,072		)	5
Total	$	20,683	$	—	$	20,683	$	(17,375	)	$	(3,131	)	$	177
December 31, 2018
Interest rate swap and swaption agreements, at fair value 1	$	163	$	—	$	163	$	—		$	(158	)	$	5
TBA securities, at fair value	110		—		110		(40		)	—			70
Receivable under reverse repurchase agreements	21,813		—		21,813		(17,236		)	(4,575		)	2
Total	$	22,086	$	—	$	22,086	$	(17,276	)	$	(4,733	)	$	77

	Offsetting of Financial and Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Pledged 2
March 31, 2019
Interest rate swap agreements, at fair value 1	$	1	$	—	$	1	$	(1	)	$	—		$	—
TBA securities, at fair value	21		—		21		(21		)	—			—
Repurchase agreements	86,685		—		86,685		(17,353		)	(69,332		)	—
Total	$	86,707	$	—	$	86,707	$	(17,375	)	$	(69,332	)	$	—
December 31, 2018
Interest rate swap agreements, at fair value 1	$	—	$	—	$	—	$	—		$	—		$	—
TBA securities, at fair value	40		—		40		(40		)	—			—
Repurchase agreements	75,717		—		75,717		(17,236		)	(58,481		)	—
Total	$	75,757	$	—	$	75,757	$	(17,276	)	$	(58,481	)	$	—

________________________________

1. Reported under derivative assets / liabilities, at fair value in the accompanying consolidated balance sheets. Refer to Note 6 for a reconciliation of derivative assets / liabilities, at fair value to their sub-components.

2. Includes cash and securities pledged / received as collateral, at fair value. Amounts include repledged collateral. Amounts presented are limited to collateral pledged sufficient to reduce the net amount to zero for individual counterparties, as applicable.

Note 8. Fair Value Measurements

We determine the fair value of our financial instruments based on our estimate of the price that would be received to sell the asset or paid to transfer the liability in an orderly transaction between market participants at the measurement date. We typically obtain price estimates from multiple third-party pricing services and dealers or, if applicable, the clearing exchange (see Note 3 for further details.) We utilize a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument's categorization within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The three levels of valuation hierarchy are defined as follows:

• Level 1 Inputs —Quoted prices (unadjusted) for identical unrestricted assets and liabilities in active markets that are accessible at the measurement date.

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• Level 2 Inputs —Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

• Level 3 Inputs —Instruments with primarily unobservable market data that cannot be corroborated.

The availability of observable inputs can vary by instrument and is affected by a wide variety of factors, including the type of instrument, whether the instrument is new and not yet established in the marketplace and other characteristics particular to the instrument.  Third-party pricing sources may also use certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities, especially when estimating fair values for securities with lower levels of recent trading activity.

We make inquiries of third-party pricing sources to understand the significant inputs and assumptions they used to determine their prices. We also review third-party price estimates and perform procedures to validate their reasonableness, including an analysis of the range of estimates for each position, comparison to recent trade activity for similar securities, and for consistency with market conditions observed as of the measurement date. While we do not adjust prices we obtain from pricing sources, we will exclude prices for securities from our estimation of fair value if we determine (based on our validation procedures and our market knowledge and expertise) that the price is significantly different from what observable market data would indicate and we cannot obtain an understanding from the third-party source as to the significant inputs used to determine the price.  

The validation procedures described above also influence our determination of the appropriate fair value measurement categorization. The following table provides a summary of our assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 based on their categorization within the valuation hierarchy (in millions). There were no transfers between valuation hierarchy levels during the periods presented.

	March 31, 2019						December 31, 2018
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Agency securities	$	—	$	93,044	$	—	$	—	$	82,291	$	—
Agency securities transferred to consolidated VIEs	—		425		—		—		436		—
Credit risk transfer securities	—		1,129		—		—		1,012		—
Non-Agency securities	—		672		—		—		548		—
U.S. Treasury securities	121		—		—		46		—		—
Interest rate swaps	—		151		—		—		126		—
Swaptions	—		11		—		—		37		—
TBA securities	—		91		—		—		110		—
Total	$	121	$	95,523	$	—	$	46	$	84,560	$	—
Liabilities:
Debt of consolidated VIEs	$	—	$	266	$	—	$	—	$	275	$	—
Obligation to return U.S. Treasury securities borrowed under reverse repurchase agreements	19,275		—		—		21,431		—		—
Interest rate swaps	—		1		—		—		—		—
TBA securities	—		21		—		—		40		—
U.S. Treasury futures	31		—		—		44		—		—
Total	$	19,306	$	288	$	—	$	21,475	$	315	$	—

Excluded from the table above are financial instruments, including cash and cash equivalents, restricted cash and cash equivalents, receivables, payables and borrowings under repurchase agreements, which are presented in our consolidated financial statements at cost. The cost basis of these instruments is determined to approximate fair value due to their short duration or, in the case of longer-term repo, due to floating rates of interest based on an index plus or minus a fixed spread which is consistent with fixed spreads demanded in the market. We estimate the fair value of these instruments using "Level 1" or "Level 2" inputs.

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Note 9. Net Income Per Common Share

Basic net income per common share is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding and the weighted-average number of vested but not yet issued restricted stock units and performance share units outstanding for the respective period. Diluted earnings per common share includes the impact of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares outstanding include unvested restricted stock units and performance share units granted under our long-term incentive program to employees and non-employee Board of Directors. The following table presents the computations of basic and diluted net income per common share for the periods indicated (shares and dollars in millions):

	Three Months Ended March 31,
	2019		2018
Weighted average number of common shares issued and outstanding	536.3		391.3
Weighted average number of fully vested restricted stock units and performance share units outstanding	0.4		—
Weighted average number of common shares outstanding - basic	536.7		391.3
Weighted average number of dilutive unvested restricted stock units and performance share units outstanding	0.5		0.2
Weighted average number of common shares outstanding - diluted	537.2		391.5
Net income available to common stockholders	$	255	$	415
Net income per common share - basic	$	0.48	$	1.06
Net income per common share - diluted	$	0.47	$	1.06

Note 10. Stockholders' Equity  

Preferred Stock

We are authorized to designate and issue up to 10.0 million shares of preferred stock in one or more classes or series. As of March 31, 2019 and December 31, 2018, 8,050 shares were designated as 7.750% Series B Cumulative Redeemable Preferred Stock ("Series B Preferred Stock") and 13,800 shares were designated as 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock ("Series C Preferred Stock"). During March 2019, we designated an additional 9,400 shares as 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock ("Series D Preferred Stock"). Each share of Series B, C, and D Preferred Stock is represented by 1,000 depositary shares.

Our preferred stock ranks senior to our common stock with respect to the payment of dividends and the distribution of assets upon a voluntary or involuntary liquidation, dissolution or winding up of the Company. Our preferred stock has no stated maturity, is not subject to any sinking fund or mandatory redemption and ranks on parity with each other. Under certain circumstances upon a change of control, our preferred stock is convertible to shares of our common stock. Holders of our preferred stock and depository shares underlying our preferred stock have no voting rights, except under limited conditions. Beginning on each series' optional redemption date, such shares will be redeemable at $25.00 per depositary share, plus accumulated and unpaid dividends (whether or not declared), exclusively at our option.

The following is a summary of our preferred stock issued and outstanding as of March 31, 2019 (dollars and shares in millions):

Preferred Stock	Issuance Date	Depository Shares Issued and Outstanding	Carrying Value		Aggregate Liquidation Preference		Fixed Rate	Optional Redemption Date 2	Fixed-to-Floating Rate Conversion Date	Floating Annual Rate
Fixed Rate
Series B	May 8, 2014	7.0	$	169	$	175	7.750%	May 8, 2019	N/A	N/A
Fixed-to-Floating Rate 1
Series C	August 22, 2017	13.0	315		325		7.000%	October 15, 2022	October 15, 2022	3M LIBOR + 5.111%
Series D	March 6, 2019	9.4	227		235		6.875%	April 15, 2024	April 15, 2024	3M LIBOR + 4.332%
Total		29.4	$	711	$	735

________________________________

1. Fixed-to-floating rate redeemable preferred stock accrue dividends at a annual fixed rate of the $25.00 liquidation preference per depository share from the issuance date up to, but not including, the fixed-to-floating rate conversion date; thereafter, dividends will accrue on a floating rate basis equal to 3 month LIBOR plus a fixed spread.

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2. Shares may be redeemed prior to our optional redemption date under certain circumstances intended to preserve our qualification as a REIT for U.S federal income tax purposes.

At-the-Market Offering Program

We are authorized by our Board of Directors to enter into agreements with sales agents to publicly offer and sell shares of our common stock in privately negotiated and/or at-the-market transactions from time-to-time up to a maximum aggregate offering price of our common stock through June 14, 2021. During the quarter ended March 31, 2019, we did not sell shares of our common stock under the sales agreements. As of March 31, 2019, shares of our common stock with an aggregate offering price of $660 million remained authorized for issuance under this program.

Accumulated Other Comprehensive Income (Loss)

The following table summarizes changes to accumulated OCI for the three months ended March 31, 2019 and 2018 (in millions):

	Three Months Ended March 31,
Accumulated Other Comprehensive Income (Loss)	2019			2018
Beginning Balance	$	(943	)	$	(345	)
OCI before reclassifications	396			(620		)
(Gain) loss amounts for available-for-sale securities reclassified from accumulated OCI to realized gain (loss) on sale of investment securities	4			(1		)
Ending Balance	$	(543	)	$	(966	)

Note 11. Subsequent Events

On April 10, 2019, our Board of Directors declared a monthly dividend of $0.18 per common share payable on May 9, 2019 to common stockholders of record as of April 30, 2019.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Management's Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") is designed to provide a reader of AGNC Investment Corp.'s consolidated financial statements with a narrative from the perspective of management, and should be read in conjunction with the consolidated financial statements and accompanying notes included in this Quarterly Report on Form 10-Q for quarterly period ended March 31, 2019. Our MD&A is presented in six sections:

• Executive Overview

• Financial Condition

• Results of Operations

• Liquidity and Capital Resources

• Off-Balance Sheet Arrangements

• Forward-Looking Statements

EXECUTIVE OVERVIEW

We are an internally-managed Real Estate Investment Trust ("REIT"). We commenced operations on May 20, 2008 following the completion of our initial public offering. Our common stock is traded on The Nasdaq Global Select Market under the symbol "AGNC."

As a REIT, we are required to distribute annually 90% of our taxable income. As a REIT, we will generally not be subject to U.S. federal or state corporate taxes on our taxable income to the extent that we distribute all our annual taxable income to our stockholders on a timely basis. It is our intention to distribute 100% of our taxable income within the time limits prescribed by the Internal Revenue Code, which may extend into the subsequent taxable year.

We invest primarily in Agency residential mortgage-backed securities ("Agency RMBS") on a leveraged basis. These investments consist of residential mortgage pass-through securities and collateralized mortgage obligations for which the principal and interest payments are guaranteed by a U.S. Government-sponsored enterprise, such as Federal National Mortgage Association ("Fannie Mae") and Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs"), or by a U.S. Government agency, such as Government National Mortgage Association ("Ginnie Mae"). We also invest in other types of mortgage and mortgage-related residential and commercial mortgage-backed securities where repayment of principal and interest is not guaranteed by a GSE or U.S. Government agency and in other investments in, or related to, the housing, mortgage or real estate markets.

Our principal objective is to provide our stockholders with attractive risk-adjusted returns through a combination of monthly dividends and tangible net book value accretion. We generate income from the interest earned on our investments, net of associated borrowing and hedging costs, and net realized gains and losses on our investment and hedging activities. We fund our investments primarily through borrowings structured as repurchase agreements.

The size and composition of our investment portfolio depends on the investment strategies we implement, availability of attractively priced investments, suitable financing to appropriately leverage our investment portfolio and overall market conditions. Market conditions are influenced by a variety of factors, including interest rates, prepayment expectations, liquidity, housing prices, unemployment rates, general economic conditions, government participation in the mortgage market, regulations and relative returns on other assets.

Trends and Recent Market Impacts

Following the challenging market conditions experienced in the fourth quarter of 2018, financial markets rebounded in the first quarter of 2019, with the S&P 500 recovering almost the entirety of its fourth quarter decline as investor sentiment improved markedly. Weaker domestic and international economic growth, coupled with benign inflation indicators, led the Federal Reserve to adopt a more neutral monetary policy stance during the first quarter, signaling that further increases to the Federal Funds rate were unlikely in 2019. The Federal Reserve also announced that it would suspend the runoff of its U.S. Treasury portfolio in September 2019, thus maintaining a larger balance sheet than the market previously expected. In response, interest rates decreased materially during the first quarter, with the 10-year U.S. Treasury rate declining 28 basis points from 2.69% as of December 31, 2018 to 2.41% as of March 31, 2019. Agency RMBS posted a strong first quarter, as valuations benefited from the decline in interest rate volatility and the outperformance of specified mortgage securities with favorable prepayment characteristics. Credit assets also performed well during the quarter with the improvement in investor sentiment, recovering much of the valuation declines experienced in the fourth quarter of 2018.

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The outperformance of our Agency RMBS portfolio relative to interest rate hedges during the first quarter of 2019 led to our total comprehensive income of $1.22 per common share for the quarter. Our economic return on tangible common equity was 7.3% (unannualized) for the quarter, comprised of the $0.67 increase in our tangible net book value per common share and $0.54 per share of common dividends declared during the quarter. During the first quarter, funding costs remained elevated as the prior year-end funding levels persisted through much of the quarter, despite the Fed’s revised outlook and dovish tone. The favorable funding dynamic between Agency RMBS repo and 3-month LIBOR experienced throughout 2018 also abated during the quarter, further negatively impacting our funding costs. In addition, given the sizable decline in interest rates over the last two quarters, our projected lifetime CPR estimates increased during the first quarter, thus leading us to recognize greater premium amortization expense into current period earnings. These factors resulted in a decline in our net interest spread for the first quarter. Although Agency RMBS return expectations are somewhat lower now, we believe that a more stable rate environment should significantly reduce the likelihood that returns will be adversely impacted by interest rate volatility. Consistent with the lower return environment, we anticipate reducing our monthly common stock dividend to $0.16 per share, or $0.48 per share per quarter, beginning with the dividend to be declared in May 2019, subject to the discretion and approval of our Board of Directors.

Our "at risk" leverage ratio was 9.4x our tangible equity as of March 31, 2019, up from 9.0x as of December 31, 2018. Consistent with higher leverage and the deployment of proceeds from our March 2019 preferred stock equity offering, our investment portfolio increased to $102.2 billion, inclusive of TBAs, as of March 31, 2019 from $91.6 billion as of December 31, 2018.

The average cost of our repurchase agreement funding increased to 2.64% for the first quarter, compared to 2.42% for the fourth quarter of 2018. Our total cost of funds, which includes the cost of our repurchase agreements, the implied funding costs of our TBA securities and the cost/benefit of our interest rate swap hedges, increased by 18 basis points to an average of 2.27% for the first quarter, compared to 2.09% for the fourth quarter of 2018.

Our average asset yield, including the implied yield on our TBA assets and excluding "catch-up" premium amortization cost associated with changes in our CPR forecast, increased 7 basis points to 3.33% for the first quarter 2019, from 3.26% for the fourth quarter of 2018, largely due to investments in higher yielding Agency securities. Notwithstanding the sequential increase, our average asset yield, excluding of “catch-up” amortization, for the first quarter was negatively impacted by higher prepayment expectations as our forecasted CPR increased to 10.5% as of March 31, 2019 from 7.9% as of December 31, 2018.

Our net interest spread, which represents the difference between our asset yield and our cost of funds (excluding “catch-up” amortization and including TBA securities), was 1.06% for the first quarter of 2019, compared to 1.17% for fourth quarter of 2018.

During the first quarter, we reduced our interest rate hedge portfolio to 77% of our funding liabilities, from 94% as of December 31, 2018. The reduction in our hedge position was in line with the contraction of our asset duration resulting from lower rates and a more benign short-term rate outlook. For additional information regarding our interest rate and spread sensitivity please refer to Item 3. Quantitative and Qualitative Disclosures about Market Risk of this Form 10-Q.

25

Market Information

The following table summarizes interest rates and prices of generic fixed rate Agency RMBS as of each date presented below:

Interest Rate/Security Price 1	Mar. 31, 2018	June 30, 2018	Sept. 30, 2018	Dec. 31, 2018	Mar. 31, 2019	Mar. 31, 2019 vs Dec. 31, 2018
LIBOR:
1-Month	1.88%	2.09%	2.26%	2.50%	2.49%	-0.01	bps
3-Month	2.31%	2.34%	2.40%	2.81%	2.60%	-0.21	bps
U.S. Treasury Security Rate:
2-Year U.S. Treasury	2.27%	2.53%	2.82%	2.49%	2.27%	-0.22	bps
5-Year U.S. Treasury	2.57%	2.73%	2.95%	2.51%	2.24%	-0.27	bps
10-Year U.S. Treasury	2.74%	2.85%	3.06%	2.69%	2.41%	-0.28	bps
30-Year U.S. Treasury	2.97%	2.98%	3.20%	3.02%	2.82%	-0.20	bps
Interest Rate Swap Rate:
2-Year Swap	2.58%	2.79%	2.99%	2.67%	2.39%	-0.28	bps
5-Year Swap	2.71%	2.88%	3.07%	2.58%	2.29%	-0.29	bps
10-Year Swap	2.78%	2.93%	3.12%	2.72%	2.41%	-0.31	bps
30-Year Swap	2.82%	2.93%	3.13%	2.85%	2.58%	-0.27	bps
30-Year Fixed Rate Agency Price:
3.0%	$97.52	$96.86	$95.67	$97.54	$99.55	+$2.01
3.5%	$100.20	$99.52	$98.41	$99.95	$101.35	+$1.40
4.0%	$102.61	$101.96	$100.97	$101.94	$102.86	+$0.92
4.5%	$104.70	$104.13	$103.16	$103.53	$104.20	+$0.67
15-Year Fixed Rate Agency Price:
2.5%	$97.98	$97.22	$96.47	$97.70	$99.39	+$1.69
3.0%	$99.88	$99.41	$98.77	$99.80	$100.89	+$1.09
3.5%	$101.94	$101.16	$100.51	$101.23	$102.28	+$1.05
4.0%	$102.63	$102.58	$101.98	$102.34	$103.00	+$0.66

________________________________

1. Price information is for generic instruments only and is not reflective of our specific portfolio holdings. Price information is as of 3:00 p.m. (EST) on such date and can vary by source. Prices and interest rates in the table above were obtained from Barclays. LIBOR rates were obtained from Bloomberg.

26

FINANCIAL CONDITION

As of March 31, 2019 and December 31, 2018, our investment portfolio consisted of $95.3 billion and $84.3 billion of investment securities, at fair value, respectively, and $7.0 billion and $7.3 billion of TBA securities, at fair value, respectively. The following table is a summary of our investment portfolio as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019								December 31, 2018
Investment Portfolio (Includes TBAs) 1	Amortized Cost		Fair Value		Average Coupon		%		Amortized Cost		Fair Value		Average Coupon		%
Fixed rate Agency RMBS and TBA securities:
≤ 15-year:
≤ 15-year RMBS	$	7,214	$	7,205	3.31	%	7	%	$	7,386	$	7,294	3.30	%	8	%
15-year TBA securities	3,432		3,457		3.61	%	3	%	3,635		3,673		3.61	%	4	%
Total ≤ 15-year	10,646		10,662		3.41	%	10	%	11,021		10,967		3.40	%	12	%
20-year RMBS	755		761		3.95	%	1	%	778		774		3.95	%	1	%
30-year:
30-year RMBS	84,405		84,536		3.89	%	83	%	74,883		73,685		3.87	%	80	%
30-year TBA securities	3,453		3,498		3.66	%	3	%	3,617		3,649		4.47	%	4	%
Total 30-year	87,858		88,034		3.88	%	86	%	78,500		77,334		3.90	%	84	%
Total fixed rate Agency RMBS and TBA securities	99,259		99,457		3.83	%	97	%	90,299		89,075		3.84	%	97	%
Adjustable rate Agency RMBS	199		201		3.14	%	—	%	212		213		3.10	%	—	%
Multifamily	31		32		3.56	%	—	%	—		—		—	%	—	%
CMO Agency RMBS:
CMO	555		555		3.46	%	1	%	588		583		3.46	%	1	%
Interest-only strips	74		84		3.63	%	—	%	77		84		3.61	%	—	%
Principal-only strips	92		95		—	%	—	%	95		94		—	%	—	%
Total CMO Agency RMBS	721		734		3.22	%	1	%	760		761		3.21	%	1	%
Total Agency RMBS and TBA securities	100,210		100,424		3.82	%	98	%	91,271		90,049		3.83	%	98	%
Non-Agency RMBS	313		319		3.86	%	—	%	264		266		3.83	%	1	%
CMBS	343		353		3.89	%	1	%	280		282		4.58	%	—	%
CRT	1,109		1,129		5.63	%	1	%	1,006		1,012		5.86	%	1	%
Total investment portfolio	$	101,975	$	102,225	3.84	%	100	%	$	92,821	$	91,609	3.85	%	100	%

________________________________

1. TBA securities are presented net of long and short positions. For further details of our TBA securities refer to Note 6 of the accompanying consolidated financial statements.

TBA securities are recorded as derivative instruments in our accompanying consolidated financial statements and our TBA dollar roll transactions represent a form of off-balance sheet financing. As of March 31, 2019 and December 31, 2018, our TBA positions had a net carrying value of $70 million and $70 million, respectively, reported in derivative assets /(liabilities) on our accompanying consolidated balance sheets. The net carrying value represents the difference between the fair value of the underlying Agency security in the TBA contract and the contract price to be paid or received for the underlying Agency security.

As of March 31, 2019 and December 31, 2018, the weighted average yield on our investment securities (excluding TBA securities) was 3.29% and 3.31%, respectively.

27

The following tables summarize certain characteristics of our fixed rate Agency RMBS portfolio, inclusive of TBAs, as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019
	Includes Net TBA Position							Excludes Net TBA Position
Fixed Rate Agency RMBS and TBA Securities	Par Value		Amortized Cost		Fair Value		Specified Pool % 1	Amortized Cost Basis	Weighted Average			Projected Life CPR 3
									WAC 2	Yield 3	Age (Months)
Fixed rate
≤ 15-year
2.5%	$	1,099	$	1,112	$	1,096	75%	101.1%	2.98%	2.11%	77	10%
3.0%	2,343		2,377		2,369		81%	101.7%	3.51%	2.45%	58	9%
3.5%	4,594		4,679		4,704		40%	102.2%	4.06%	2.85%	28	12%
4.0%	2,257		2,320		2,335		47%	103.2%	4.59%	3.10%	18	12%
4.5%	150		156		156		98%	103.9%	4.87%	3.00%	102	12%
≥ 5.0%	2		2		2		100%	102.2%	6.59%	4.60%	138	14%
Total ≤ 15-year	10,445		10,646		10,662		55%	102.1%	3.85%	2.67%	44	11%
20-year
3.5%	304		310		312		80%	101.9%	4.05%	3.00%	73	11%
4.0%	202		208		210		91%	103.3%	4.44%	3.26%	27	11%
4.5%	223		235		237		100%	105.0%	5.00%	3.29%	28	13%
≥ 5.0%	2		2		2		—%	105.5%	5.94%	3.33%	132	17%
Total 20-year:	731		755		761		89%	103.3%	4.46%	3.16%	46	12%
30-year:
3.0%	3,012		2,996		3,005		3%	100.1%	3.58%	2.97%	50	6%
3.5%	30,221		31,022		30,806		51%	102.9%	4.07%	3.07%	38	8%
4.0%	35,956		37,272		37,419		68%	103.6%	4.57%	3.39%	24	12%
4.5%	15,640		16,352		16,587		73%	104.8%	5.00%	3.61%	15	12%
5.0%	128		137		139		120%	106.5%	5.53%	3.72%	63	11%
≥ 5.5%	72		79		78		50%	110.0%	6.18%	3.34%	149	13%
Total 30-year	85,029		87,858		88,034		61%	103.5%	4.45%	3.31%	28	10%
Total fixed rate	$	96,205	$	99,259	$	99,457	61%	103.3%	4.41%	3.26%	29	10%

________________________________

1. Specified pools include pools backed by lower balance loans with original loan balances of up to $200K, HARP pools as defined as pools backed by 100% refinance loans with original LTVs ≥ 80% issued between May 2009 and September 2017, and pools backed by loans 100% originated in New York and Puerto Rico. As of March 31, 2019, lower balance specified pools have a weighted average original loan balance of $111,000 and $117,000 for 15-year and 30-year securities, respectively, and HARP specified pools have a weighted average original LTV of 119% and 136% for 15-year and 30-year securities, respectively.

2. WAC represents the weighted average coupon of the underlying collateral.

3. Portfolio yield incorporates a projected life CPR based on forward rate assumptions as of March 31, 2019.

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	December 31, 2018
	Includes Net TBA Position							Excludes Net TBA Position
Fixed Rate Agency RMBS and TBA Securities	Par Value		Amortized Cost		Fair Value		Specified Pool % 1	Amortized Cost Basis	Weighted Average			Projected Life CPR 3
									WAC 2	Yield 3	Age (Months)
Fixed rate
≤ 15-year
≤ 2.5%	$	1,157	$	1,170	$	1,139	75%	101.2%	2.98%	2.11%	74	9%
3.0%	2,651		2,677		2,650		75%	101.7%	3.51%	2.44%	56	9%
3.5%	4,444		4,498		4,502		43%	101.9%	4.07%	2.96%	25	10%
4.0%	2,449		2,507		2,509		40%	103.5%	4.47%	2.96%	44	10%
4.5%	160		167		165		99%	104.0%	4.87%	3.01%	99	11%
≥ 5.0%	2		2		2		100%	102.4%	6.55%	4.57%	134	14%
Total ≤ 15-year	10,863		11,021		10,967		54%	102.0%	3.82%	2.68%	46	10%
20-year
3.5%	314		320		318		80%	102.0%	4.05%	3.00%	70	10%
4.0%	206		214		213		91%	103.4%	4.45%	3.28%	24	10%
4.5%	230		242		241		100%	105.2%	5.00%	3.35%	25	11%
≥ 5.0%	2		2		2		—%	105.7%	5.94%	3.34%	128	16%
Total 20-year:	752		778		774		89%	103.4%	4.46%	3.19%	44	11%
30-year:
≤ 3.0%	3,178		3,133		3,108		3%	100.1%	3.58%	2.97%	47	6%
3.5%	22,410		23,258		22,496		71%	103.2%	4.06%	3.05%	38	6%
4.0%	37,230		38,564		38,147		61%	103.8%	4.54%	3.44%	24	8%
4.5%	12,777		13,319		13,361		69%	104.7%	4.99%	3.75%	14	9%
5.0%	133		143		142		117%	106.8%	5.53%	3.80%	61	9%
≥ 5.5%	75		83		80		49%	110.5%	6.17%	3.35%	147	12%
Total 30-year	75,803		78,500		77,334		63%	103.6%	4.41%	3.34%	28	8%
Total fixed rate	$	87,418	$	90,299	$	89,075	62%	103.5%	4.36%	3.28%	30	8%

________________________________

1. See Note 1 in table above for specified pool composition. As of December 31, 2018, lower balance specified pools have a weighted average original loan balance of $102,000 and $113,000 for 15-year and 30-year securities, respectively, and HARP specified pools have a weighted average original LTV of 119% and 136% for 15-year and 30-year securities, respectively.

2. WAC represents the weighted average coupon of the underlying collateral.

3. Portfolio yield incorporates a projected life CPR based on forward rate assumptions as of December 31, 2018.

As of March 31, 2019 and December 31, 2018, our investments in CRT and non-Agency securities had the following credit ratings:

	March 31, 2019						December 31, 2018
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS		CMBS		CRT		RMBS		CMBS
AAA	$	—	$	156	$	62	$	—	$	160	$	52
AA	—		42		190		—		17		152
A	17		45		33		17		33		15
BBB	54		63		58		25		43		53
BB	412		8		10		492		8		10
B	600		2		—		453		2		—
Not Rated	46		3		—		25		3		—
Total	$	1,129	$	319	$	353	$	1,012	$	266	$	282

 ________________________________

1. Represents the lowest of Standard and Poor's ("S&P"), Moody's, Fitch, DBRS, Kroll Bond Rating Agency ("KBRA") and Morningstar credit ratings, stated in terms of the S&P equivalent rating as of each date.

Our CRT securities reference the performance of loans underlying Agency RMBS issued by Fannie Mae or Freddie Mac, which were subject to their underwriting standards. As of March 31, 2019, our CRT securities had floating and fixed rate coupons ranging from 3.0% to 8.8%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from

29

3.7% to 4.9%. As of December 31, 2018, our CRT securities had floating rate coupons ranging from 3.9% to 9.5%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from 3.8% to 4.8%.

RESULTS OF OPERATIONS

Non-GAAP Financial Measures

In addition to the results presented in accordance with GAAP, our results of operations discussed below include certain non-GAAP financial information, including "economic interest income," "economic interest expense," "net spread and dollar roll income," "net spread and dollar roll income, excluding 'catch-up' premium amortization," "estimated taxable income" and the related per common share measures and certain financial metrics derived from such non-GAAP information, such as "cost of funds" and "net interest spread."

"Economic interest income" is measured as interest income (GAAP measure), adjusted (i) to exclude "catch-up" premium amortization associated with changes in CPR estimates and (ii) to include TBA dollar roll implied interest income. "Economic interest expense" is measured as interest expense (GAAP measure) adjusted to include TBA dollar roll implied interest expense and interest rate swap periodic income/(cost). "Net spread and dollar roll income, excluding "catch-up" premium amortization" includes (i) the components of economic interest income and economic interest expense and other miscellaneous dividend and interest income (referred to as "adjusted net interest and dollar roll income"), less (ii) total operating expenses (GAAP measure), net of management fee income (GAAP measure), adjusted, as applicable, to exclude one-time expenses and non-recurring termination fee income recognized in connection with the sale of MTGE Investment Corp. and corresponding termination of the Company's management agreement with MTGE.

By providing such measures, in addition to the related GAAP measures, we believe we give greater transparency into the information used by our management in its financial and operational decision-making. We also believe it is important for users of our financial information to consider information related to our current financial performance without the effects of certain measures and one-time events that are not necessarily indicative of our current investment portfolio performance and operations.

Specifically, in the case of "adjusted net interest and dollar roll income," we believe the inclusion of TBA dollar roll income is meaningful as TBAs, which are accounted for under GAAP as derivative instruments with gains and losses recognized in other gain (loss) in our consolidated statement of comprehensive income, are economically equivalent to holding and financing generic Agency RMBS using short-term repurchase agreements. Similarly, we believe that the inclusion of periodic interest rate swap settlements in "economic interest expense" is meaningful as interest rate swaps are the primary instrument we use to economically hedge against fluctuations in our borrowing costs and it is more indicative of our total cost of funds than interest expense alone. In the case of "economic interest income" and "net spread and dollar roll income, excluding 'catch-up' premium amortization," we believe the exclusion of "catch-up" adjustments to premium amortization cost or benefit is meaningful as it excludes the cumulative effect from prior reporting periods due to current changes in future prepayment expectations and, therefore, exclusion of such cost or benefit is more indicative of the current earnings potential of our investment portfolio. In the case of estimated taxable income, we believe it is meaningful information because it directly relates to the amount of dividends we are required to distribute to maintain our REIT qualification status.

However, because such measures are incomplete measures of our financial performance and involve differences from results computed in accordance with GAAP, they should be considered as supplementary to, and not as a substitute for, results computed in accordance with GAAP. In addition, because not all companies use identical calculations, our presentation of such non-GAAP measures may not be comparable to other similarly-titled measures of other companies. Furthermore, estimated taxable income can include certain information that is subject to potential adjustments up to the time of filing our income tax returns, which occurs after the end of our fiscal year.

Selected Financial Data

The following selected financial data is derived from our interim consolidated financial statements and the notes thereto. The tables below present our condensed consolidated balance sheets as of March 31, 2019 and December 31, 2018 and our condensed consolidated statements of comprehensive income and key statistics for the three months ended March 31, 2019 and 2018 (in millions, except per share amounts):

30

($ in Millions, Except Per Share Amounts)
Balance Sheet Data	March 31, 2019		December 31, 2018
Investment securities, at fair value	$	95,270	$	84,287
Total assets	$	118,807	$	109,241
Repurchase agreements and other debt	$	86,951	$	75,992
Total liabilities	$	108,306	$	99,335
Total stockholders' equity	$	10,501	$	9,906
Net book value per common share 1	$	18.21	$	17.54
Tangible net book value per common share 2	$	17.23	$	16.56

	Three Months Ended March 31,
Statement of Comprehensive Income Data	2019		2018
Interest income	$	705	$	431
Interest expense	541		206
Net interest income	164		225
Other gain (loss), net	120		217
Operating expenses	19		18
Net income	265		424
Dividend on preferred stock	10		9
Net income available to common stockholders	$	255	$	415
Net income	$	265	$	424
Other comprehensive income (loss), net	400		(621		)
Comprehensive income (loss)	665		(197		)
Dividend on preferred stock	10		9
Comprehensive income (loss) available (attributable) to common stockholders	$	655	$	(206	)
Weighted average number of common shares outstanding - basic	536.7		391.3
Weighted average number of common shares outstanding - diluted	537.2		391.5
Net income per common share - basic	$	0.48	$	1.06
Net income per common share - diluted	$	0.47	$	1.06
Comprehensive income (loss) per common share - basic and diluted	$	1.22	$	(0.53	)
Dividends declared per common share	$	0.54	$	0.54

	Three Months Ended March 31,
Other Data (Unaudited) *	2019			2018
Average investment securities - at par	$	87,021		$	53,986
Average investment securities - at cost	$	89,952		$	56,573
Average net TBA portfolio - at cost	$	8,002		$	15,585
Average total assets - at fair value	$	114,994		$	68,781
Average Agency repurchase agreements and other debt outstanding 3	$	82,070		$	49,567
Average stockholders' equity 4	$	10,186		$	8,535
Average tangible net book value "at risk" leverage 5	9.3:1			8.2:1
Tangible net book value "at risk" leverage (as of period end) 6	9.4:1			8.2:1
Economic return on tangible common equity 7	7.3		%	(2.6		)%
Expenses % of average total assets	0.07		%	0.10		%
Expenses % of average assets, including average net TBA position	0.06		%	0.09		%
Expenses % of average stockholders' equity	0.75		%	0.84		%

________________________________

* Except as noted below, average numbers for each period are weighted based on days on our books and records.

31

1. Net book value per common share is calculated as total stockholders' equity, less preferred stock liquidation preference, divided by number of common shares outstanding as of period end.

2. Tangible net book value per common share excludes goodwill.

3. Other debt includes debt of consolidated VIEs. Amount excludes U.S. Treasury repo agreements and TBA contracts.

4. Average stockholders' equity calculated as average month-ended stockholders' equity during the period.

5. Average tangible net book value "at risk" leverage is calculated by dividing the sum of daily weighted average mortgage borrowings outstanding (Agency repo, other debt and TBA securities (at cost)) for the period by the sum of average stockholders' equity adjusted to exclude goodwill for the period. Leverage excludes U.S. Treasury repurchase agreements.

6. "At risk" leverage as of period end is calculated by dividing the sum of mortgage borrowings outstanding and receivable/payable for unsettled investment securities as of period end (at cost) by the sum of total stockholders' equity adjusted to exclude goodwill as of period end. Leverage excludes U.S. Treasury repurchase agreements.

7. Economic return on tangible common equity represents the sum of the change in tangible net book value per common share and dividends declared on common stock during the period over beginning tangible net book value per common share.

Economic Interest Income and Asset Yields

The following table summarizes our economic interest income (a non-GAAP measure) for the three months ended March 31, 2019 and 2018, which includes the combination of interest income (a GAAP measure) on our holdings reported as investment securities on our consolidated balance sheets, adjusted to exclude estimated "catch-up" premium amortization adjustments due to changes in our CPR forecast, and implied interest income on our TBA securities (dollars in millions):

	Three Months Ended March 31,
	2019					2018
	Amount			Yield		Amount			Yield
Interest income:
Cash/coupon interest income	$	847		3.89	%	$	500		3.70	%
Net premium amortization	(142		)	(0.75	)%	(69		)	(0.65	)%
Interest income (GAAP measure)	705			3.14	%	431			3.05	%
Estimated "catch-up" premium amortization cost (benefit) due to change in CPR forecast	39			0.17	%	(21		)	(0.15	)%
Interest income, excluding "catch-up" premium amortization	744			3.31	%	410			2.90	%
TBA dollar roll income - implied interest income 1,2	71			3.55	%	120			3.08	%
Economic interest income, excluding "catch-up" amortization (non-GAAP measure) 3	$	815		3.33	%	$	530		2.94	%
Weighted average actual portfolio CPR for investment securities held during the period	6.3		%			8.6		%
Weighted average projected CPR for the remaining life of investment securities held as of period end	10.5		%			7.6		%
Average 30-year fixed rate mortgage rate as of period end 4	4.06		%			4.44		%
10-year U.S. Treasury rate as of period end	2.41		%			2.74		%

  ________________________________

1. Reported in gain (loss) on derivatives instruments and other securities, net in the accompanying consolidated statements of operations.

2. Implied interest income from TBA dollar roll transactions is computed as the sum of (i) TBA dollar roll income and (ii) estimated TBA implied funding cost (see Economic Interest Expense and Aggregate Cost of Funds below). TBA dollar roll income represents the price differential, or "price drop," between the TBA price for current month settlement versus the TBA price for forward month settlement and is the economic equivalent to interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period. Amount is net of TBAs used for hedging purposes. Amount excludes TBA mark-to-market adjustments.

3. The combined asset yield is calculated on a weighted average basis based on our average investment and TBA balances outstanding during the period and their respective yields.

4. Source: Freddie Mac Primary Fixed Mortgage Rate Mortgage Market Survey

The principal elements impacting our economic interest income are the size of our average investment portfolio and the yield (actual and implied) on our securities. The following table includes a summary of the estimated impact of each of these elements on our economic interest income for the three months ended March 31, 2019, compared to the prior year period (in millions):

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Impact of Changes in the Principal Elements Impacting Economic Interest Income
Three Months Ended March 31, 2019 vs. March 31, 2018
				Due to Change in Average
	Total Increase / (Decrease)			Portfolio Size			Asset Yield
Interest Income (GAAP measure)	$	274		$	254		$	20
Estimated "catch-up" premium amortization due to change in CPR forecast	60			—			60
Interest income, excluding "catch-up" premium amortization	334			254			80
TBA dollar roll income - implied interest income	(49		)	(51		)	2
Economic interest income, excluding "catch-up" amortization (non-GAAP measure)	$	285		$	203		$	82

Our average investment portfolio, inclusive of TBAs, increased 36% (at cost) for the three months ended March 31, 2019, compared to the prior year period, in line with the deployment of new equity capital and an increase in our tangible equity "at risk" leverage ratio. The increase in our average asset yield over the prior year period was largely due to changes in asset composition, as we increased our holdings of higher coupon, 30-year fixed rate securities relative to shorter duration assets.

Leverage  

Our primary measure of leverage is our tangible net book value "at risk" leverage ratio, which is measured as the sum of our Agency repurchase agreements, other debt used to fund our investment securities and net TBA position (at cost) (together referred to as "mortgage borrowings") and our net receivable/payable for unsettled investment securities, divided by our total stockholders' equity adjusted to exclude goodwill and other intangible asset.

We include our net TBA position in our measure of leverage because a forward contract to acquire Agency RMBS in the TBA market carries similar risks to Agency RMBS purchased in the cash market and funded with on-balance sheet liabilities. Similarly, a TBA contract for the forward sale of Agency securities has substantially the same effect as selling the underlying Agency RMBS and reducing our on-balance sheet funding commitments. (Refer to Liquidity and Capital Resources for further discussion of TBA securities and dollar roll transactions). Repurchase agreements used to fund short-term investments in U.S. Treasury securities ("U.S. Treasury repo") are excluded from our measure of leverage due to the temporary and highly liquid nature of these investments.

Our tangible net book value "at risk" leverage increased to 9.4x as of March 31, 2019, compared to 9.0x as of December 31, 2018 and 8.2x as of March 31, 2018, in light of improved overall levered returns on Agency RMBS and the availability of suitable financing. The table below presents a summary of our leverage ratios for the periods listed (dollars in millions):

	Agency Repurchase Agreements and Other Debt 1						Net TBA Position Long/(Short) 2				Average Tangible Net Book Value "At Risk" Leverage during the Period 3	Average "At Risk" Leverage during the Period 4	Tangible Net Book Value "At Risk" Leverage as of Period End 3	"At Risk" Leverage as of Period End 5
Quarter Ended	Average Daily Amount		Maximum Daily Amount		Ending Amount		Average Daily Amount		Ending Amount
March 31, 2019	$	82,070	$	87,877	$	86,590	$	8,002	$	6,885	9.3:1	8.8:1	9.4:1	9.0:1
December 31, 2018	$	68,499	$	77,442	$	75,992	$	8,066	$	7,252	8.4:1	7.9:1	9.0:1	8.5:1
March 31, 2018	$	49,567	$	50,645	$	49,292	$	15,585	$	13,529	8.2:1	7.7:1	8.2:1	7.6:1

________________________________

1. Other debt includes debt of consolidated VIEs. Amounts exclude U.S. Treasury repo agreements.

2. Daily average and ending net TBA position outstanding measured at cost.

3. Tangible net book value "at risk" leverage includes the components of "at risk" leverage with stockholders' equity adjusted to exclude goodwill and other intangible assets, net.

4. Average "at risk" leverage during the period was calculated by dividing the sum of our daily weighted average mortgage borrowings outstanding during the period by the sum of our average month-ended stockholders' equity less our average investment in REIT equity securities for the period.

5. "At risk" leverage as of period end is calculated by dividing the sum of our mortgage borrowings outstanding and our receivable/payable for unsettled investment securities as of period end (at cost) by the sum of our total stockholders' equity less the fair value of investments in REIT equity securities at period end. Leverage excludes U.S. Treasury repo agreements.

Economic Interest Expense and Aggregate Cost of Funds 

The following table summarizes our economic interest expense and aggregate cost of funds (non-GAAP measures) for the three months ended March 31, 2019 and 2018 (dollars in millions), which includes the combination of interest expense on Agency repurchase agreements and other debt (GAAP measure), implied interest expense on our TBA securities and interest rate swap periodic interest (income) cost:

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	Three Months Ended March 31,
	2019					2018
Economic Interest Expense and Aggregate Cost of Funds 1	Amount			Cost of Funds		Amount		Cost of Funds
Repurchase agreement and other debt - interest expense (GAAP measure)	$	541		2.64	%	$	206	1.69	%
TBA dollar roll income - implied interest expense 2,3	52			2.60	%	58		1.49	%
Economic interest expense - before interest rate swap costs 4	593			2.64	%	264		1.62	%
Interest rate swap periodic interest (income) cost, net 2,5	(83		)	(0.37	)%	9		0.06	%
Total economic interest expense (non-GAAP measure)	$	510		2.27	%	$	273	1.68	%

 ________________________________

1. Amounts exclude interest rate swap termination fees and variation margin settlements paid or received, forward starting swaps and the impact of other supplemental hedges, such as swaptions and U.S. Treasury positions.

2. Reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

3. The implied funding cost of TBA dollar roll transactions is determined using the price differential, or "price drop," between the TBA price for current month settlement versus the TBA price for forward month settlement and market based assumptions regarding the "cheapest-to-deliver" collateral that can be delivered to satisfy the TBA contract, such as the anticipated collateral’s weighted average coupon, weighted average maturity and projected 1-month CPR.  The average implied funding cost for all TBA transactions is weighted based on our daily average TBA balance outstanding for the period.

4. The combined cost of funds for total mortgage borrowings outstanding, before interest rate swap costs, is calculated on a weighted average basis based on average repo, other debt and TBA balances outstanding during the period and their respective cost of funds.

5. Interest rate swap periodic interest (income) cost is measured as a percent of average mortgage borrowings outstanding for the period.

The principal elements impacting our economic interest expense are (i) the size of our average mortgage borrowings and interest rate swap portfolio outstanding during the period, (ii) the average interest rate (actual and implied) on our mortgage borrowings and (iii) the average net interest rate paid/received on our interest rate swaps. The following table includes a summary of the estimated impact of these elements on our economic interest expense for the three months ended March 31, 2019, compared to the prior year period (in millions):

Impact of Changes in the Principal Elements of Economic Interest Expense
Three Months Ended March 31, 2019 vs. March 31, 2018
				Due to Change in Average
	Total Increase / (Decrease)			Borrowing / Swap Balance			Borrowing / Swap Rate
Repurchase agreements and other debt interest expense	$	335		$	138		$	197
TBA dollar roll income - implied interest expense	(6		)	(28		)	22
Interest rate swap periodic interest income/cost	(92		)	1			(93		)
Total change in economic interest expense	$	237		$	111		$	126

Our average mortgage borrowings, inclusive of TBAs, increased by 38% for the three months ended March 31, 2019 compared to the prior year period as a function of our higher asset base. The increase in the average interest rate (actual and implied) on our mortgage borrowings was largely a function of increases in the Federal Funds rate during fiscal year 2018. The decrease in our periodic swap costs was due to the receive-floating rate leg of our interest rate swaps resetting to higher prevailing three-month LIBOR rates.

The table below presents a summary of the ratio of our average interest rates swaps outstanding, excluding forward starting swaps, to our average mortgage borrowings for the three months ended March 31, 2019 and 2018 (dollars in millions):

	Three Months Ended March 31,
Average Ratio of Interest Rate Swaps (Excluding Forward Starting Swaps) to Mortgage Borrowings Outstanding	2019			2018
Average Agency repo and other debt outstanding	$	82,070		$	49,567
Average net TBA portfolio outstanding - at cost	$	8,002		$	15,585
Average mortgage borrowings outstanding	$	90,072		$	65,152
Average notional amount of interest rate swaps outstanding (excluding forward starting swaps)	$	45,158		$	41,021
Ratio of average interest rate swaps to mortgage borrowings outstanding	50		%	63		%
Average interest rate swap pay-fixed rate (excluding forward starting swaps)	1.97		%	1.72		%
Average interest rate swap receive-floating rate	(2.72		)%	(1.63		)%
Average interest rate swap net pay/(receive) rate	(0.75		)%	0.09		%

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For the three months ended March 31, 2019 and 2018, we had an average forward starting swap balance of $5.9 billion and $3.4 billion, respectively. Forward starting interest rate swaps do not impact our economic interest expense and aggregate cost of funds until they commence accruing net interest settlements on their forward start dates. Including forward starting swaps, our average ratio of interest rate swaps outstanding to our average mortgage borrowings was 57% and 68% for the three months ended March 31, 2019 and 2018, respectively.

Net Interest Spread

The following table presents a summary of our net interest spread (including the impact of TBA dollar roll income, interest rate swaps and excluding "catch-up" premium amortization) for the three months ended March 31, 2019 and 2018:

	Three Months Ended March 31,
Investment and TBA Securities - Net Interest Spread	2019		2018
Average asset yield, excluding "catch-up" premium amortization	3.33	%	2.94	%
Average aggregate cost of funds	(2.27	)%	(1.68	)%
Average net interest spread, excluding "catch-up" premium amortization	1.06	%	1.26	%

Net Spread and Dollar Roll Income

The following table presents a summary of our net spread and dollar roll income, excluding estimated "catch-up" premium amortization, per diluted common share (a non-GAAP financial measure) and a reconciliation to our net interest income (the most comparable GAAP financial measure) for the three months ended March 31, 2019 and 2018 (dollars in millions):

	Three Months Ended March 31,
	2019			2018
Net interest income (GAAP measure)	$	164		$	225
TBA dollar roll income, net 1	19			62
Interest rate swap periodic interest income (cost), net 1	83			(9		)
Other interest and dividend income 1	3			1
Adjusted net interest and dollar roll income	269			279
Other operating income (expense):
Management fee income	—			4
Operating expenses	(19		)	(18		)
Adjusted other operating income (expense), net	(19		)	(14		)
Net spread and dollar roll income	250			265
Dividend on preferred stock	10			9
Net spread and dollar roll income available to common stockholders (non-GAAP measure)	240			256
Estimated "catch-up" premium amortization (benefit) cost due to change in CPR forecast	39			(21		)
Net spread and dollar roll income, excluding "catch-up" premium amortization, available to common stockholders (non-GAAP measure)	$	279		$	235
Weighted average number of common shares outstanding - basic	536.7			391.3
Weighted average number of common shares outstanding - diluted	537.2			391.5
Net spread and dollar roll income per common share - basic	$	0.45		$	0.65
Net spread and dollar roll income per common share - diluted	$	0.45		$	0.65
Net spread and dollar roll income, excluding "catch-up" premium amortization, per common share - basic	$	0.52		$	0.60
Net spread and dollar roll income, excluding "catch-up" premium amortization, per common share - diluted	$	0.52		$	0.60

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1. Reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income

Gain (Loss) on Investment Securities, Net

During the three months ended March 31, 2019, the average fair value of our investment portfolio increased 169 basis points to 100.2% of the weighted average cost basis as of March 31, 2019 due to the decline in long-term interest rates and the outperformance of specified Agency RMBS with favorable prepayment characteristics. During the prior year period, the average fair value of our investment portfolio declined 200 basis points to 97.3% of the weighted average cost basis as of March 31, 2018, due to higher interest rates and lower pay-up values for specified Agency RMBS.

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The following table is a summary of our net gain (loss) on investment securities for the three months ended March 31, 2019 and 2018 (in millions): 

	Three Months Ended March 31,
Gain (Loss) on Investment Securities, Net 1	2019		2018
Gain (loss) on sale of investment securities, net	$	60	$	(2	)
Unrealized gain (loss) on investment securities measured at fair value through net income, net 2	1,060		(523		)
Unrealized gain (loss) on investment securities measured at fair value through other comprehensive income, net	400		(621		)
Total gain (loss) on investment securities, net	$	1,520	$	(1,146	)

________________________________

1. Amounts exclude gain (loss) on TBA securities, which are reported in gain (loss) on derivative instruments and other securities, net in our Consolidated Statements of Comprehensive Income.

2. Investment securities acquired after fiscal year 2016 are measured at fair value through net income (see Note 3 of our Consolidated Financial Statements in this Form 10-Q).

Gain (Loss) on Derivative Instruments and Other Securities, Net  

The following table is a summary of our gain (loss) on derivative instruments and other securities, net for the three months ended March 31, 2019 and 2018 (in millions):

	Three Months Ended March 31,
	2019			2018
Interest rate swap periodic interest income (cost), net	$	83		$	(9	)
Realized gain (loss) on derivative instruments and other securities, net:
TBA securities - dollar roll income, net	19			62
TBA securities - mark-to-market net gain (loss)	65			(432		)
Payer swaptions	(10		)	6
U.S. Treasury securities - long position	—			—
U.S. Treasury securities - short position	(66		)	3
U.S. Treasury futures - short position	(45		)	110
Interest rate swaps - termination fees and variation margin settlements, net	(699		)	582
Other	(6		)	1
Total realized gain (loss) on derivative instruments and other securities, net	(742		)	332
Unrealized gain (loss) on derivative instruments and other securities, net:
TBA securities - mark-to-market net gain (loss)	(1		)	78
Interest rate swaps	20			90
Payer swaptions	(17		)	85
U.S. Treasury securities - short position	(359		)	209
U.S. Treasury futures - short position	14			(48		)
Other	2			1
Total unrealized gain (loss) on derivative instruments and other securities, net	(341		)	415
Total gain (loss) on derivative instruments and other securities, net	$	(1,000	)	$	738

For further details regarding our use of derivative instruments and related activity refer to Notes 3 and 6 of our Consolidated Financial Statements in this Form 10-Q.

Estimated Taxable Income 

For the three months ended March 31, 2019 and 2018, we had estimated taxable income available to common stockholders of $196 million and $80 million (or $0.36 and $0.20 per diluted common share), respectively. Income determined under GAAP differs from income determined under U.S. federal income tax rules because of both temporary and permanent differences in income and expense recognition. The primary differences are (i) unrealized gains and losses on derivative instruments and other securities marked-to-market in current income for GAAP purposes, but excluded from taxable income until realized or settled, (ii) timing differences, both temporary and potentially permanent, in the recognition of certain realized gains and losses and (iii) temporary differences related to the amortization of premiums and discounts on investments. Furthermore, our estimated taxable income is subject to potential adjustments up to the time of filing our appropriate tax returns, which occurs after the end of our

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fiscal year. The following is a reconciliation of our GAAP net income to our estimated taxable income for the three months ended March 31, 2019 and 2018 (dollars in millions, except per share amounts):

	Three Months Ended March 31,
	2019			2018
Net income	$	265		$	424
Estimated book to tax differences:
Premium amortization, net	54			(23		)
Realized gain/loss, net	627			(652		)
Net capital loss/(utilization of net capital loss carryforward)	(12		)	245
Unrealized (gain)/loss, net	(719		)	108
Other	(9		)	(13		)
Total book to tax differences	(59		)	(335		)
Estimated REIT taxable income	206			89
Dividend on preferred stock	10			9
Estimated REIT taxable income available to common stockholders	$	196		$	80
Weighted average number of common shares outstanding - basic	536.7			391.3
Weighted average number of common shares outstanding - diluted	537.2			391.5
Estimated REIT taxable income per common share - basic	$	0.37		$	0.20
Estimated REIT taxable income per common share - diluted	$	0.36		$	0.20
Beginning cumulative non-deductible net capital loss	$	182		$	357
Increase (decrease) in net capital loss carryforward	(12		)	245
Ending cumulative non-deductible net capital loss	$	170		$	602
Ending cumulative non-deductible net capital loss per common share	$	0.32		$	1.54

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LIQUIDITY AND CAPITAL RESOURCES

Our primary sources of funds are borrowings under master repurchase agreements, asset sales, receipts of monthly principal and interest payments on our investment portfolio and equity offerings. We may also enter into TBA contracts to acquire or dispose of Agency RMBS and TBA dollar roll transactions to finance Agency RMBS purchases. Because the level of our borrowings can be adjusted daily, the level of cash and cash equivalents carried on our balance sheet is significantly less important than the potential liquidity available under our borrowing arrangements. Our leverage will vary periodically depending on market conditions and our assessment of risks and returns. We generally would expect our leverage to be within six to twelve times the amount of our tangible stockholders' equity. However, under certain market conditions, we may operate at leverage levels outside of this range for extended periods of time.

We currently believe that we have sufficient liquidity and capital resources available for the acquisition of additional investments, repayments on borrowings, maintenance of any margin requirements and the payment of cash dividends as required for our continued qualification as a REIT. We currently expect to distribute 100% of our taxable income so that we are not subject to U.S. federal and state corporate income taxes. Our REIT distribution requirement of at least 90% of our taxable income limits our ability to retain earnings and thereby replenish or increase capital from operations.

Debt Capital

As of March 31, 2019 and December 31, 2018, our mortgage borrowings consisted of the following (dollars in millions):

	March 31, 2019				December 31, 2018
Mortgage Borrowings	Amount		%		Amount		%
Repurchase agreements 1	$	86,324	93	%	$	75,717	91	%
Debt of consolidated variable interest entities, at fair value	266		—	%	275		—	%
Total debt	86,590		93	%	75,992		91	%
Net TBA position, at cost	6,885		7	%	7,252		9	%
Total mortgage borrowings	$	93,475	100	%	$	83,244	100	%

________________________________

1. Amount excludes $361 million of repurchase agreements used to fund purchases of U.S. Treasury securities as of March 31, 2019.

Our tangible net book value "at risk" leverage was 9.4x and 9.0x as of March 31, 2019 and December 31, 2018, respectively, measured as the sum of our total mortgage borrowings and net payable / (receivable) for unsettled investment securities, divided by the sum of our total stockholders' equity adjusted to exclude goodwill.

Repurchase Agreements

As part of our investment strategy, we borrow against our investment portfolio pursuant to master repurchase agreements. We expect that the majority of our borrowings under repurchase agreements will have maturities ranging up to one year but may have terms ranging up to five years or longer. Borrowings with maturities greater than one year typically have floating rates of interest based on LIBOR plus or minus a fixed spread.

As of March 31, 2019, we had $86.3 billion of repurchase agreements outstanding used to fund acquisitions of investment securities with a weighted average interest rate of 2.82% and a weighted average remaining days-to-maturity of 81 days, compared $75.7 billion, 2.79% and 49 days, respectively, as of December 31, 2018.

To limit our counterparty exposure, we diversify our funding across multiple counterparties and by counterparty region. As of March 31, 2019, we had master repurchase agreements with 47 financial institutions located throughout North America, Europe and Asia, including counterparties accessed through our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC ("BES"). BES has direct access to bilateral and triparty funding, including the General Collateral Finance Repo service offered by the Fixed Income Clearing Corporation, or "FICC," which provides us greater depth and diversity of funding at favorable terms relative to traditional bilateral repurchase agreement funding. As of March 31, 2019, $35.6 billion of our repurchase agreement funding was sourced through BES.

The table below includes a summary of our Agency RMBS repurchase agreement funding by number of repo counterparties and counterparty region as of March 31, 2019. For further details regarding our borrowings under repurchase agreements as of March 31, 2019, please refer to Notes 5 and 7 to our Consolidated Financial Statements in this Form 10-Q.

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	March 31, 2019
Counter-Party Region	Number of Counter-Parties	Percent of Repurchase Agreement Funding
North America:
FICC	1	40%
Other	27	40%
Total North America	28	80%
Europe	14	14%
Asia	5	6%
Total	47	100%

Amounts available to be borrowed under our repurchase agreements are dependent upon lender collateral requirements and the lender's determination of the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, credit quality and liquidity conditions within the investment banking, mortgage finance and real estate industries. In addition, our counterparties apply a "haircut" to our pledged collateral, which means our collateral is valued at slightly less than market value. This haircut reflects the underlying risk of the specific collateral and protects our counterparty against a change in its value, but conversely subjects us to counterparty credit risk and limits the amount we can borrow against our investment securities. Our master repurchase agreements do not specify the haircut; rather haircuts are determined on an individual repurchase transaction basis. Throughout the three months ended March 31, 2019, haircuts on our pledged collateral remained stable and, as of March 31, 2019, our weighted average haircut was approximately 3.9% of the value of our collateral, inclusive of collateral funded through BES. As of March 31, 2019, our maximum amount at risk (or the amount of our repurchase liabilities in excess of the value of collateral pledged) with any counterparty related to our repurchase agreements, excluding the FICC, was less than 4% of our tangible stockholders' equity, with our top five repo counterparties, excluding the FICC, representing less than 13% of our tangible stockholders' equity. As of March 31, 2019, approximately 7% of our tangible stockholder's equity was at risk with the FICC. We could be exposed to credit risk if the FICC or an FICC netting member defaults on its obligations. However, we believe that the risk is minimal due to the FICC's initial and daily mark-to-market margin requirements, guarantee funds and other resources that are available in the event of a default.

We may be required to pledge additional assets to our counterparties in the event the estimated fair value of the existing collateral pledged under our agreements declines and our counterparties demand additional collateral (a "margin call"), which may take the form of additional securities or cash. Specifically, margin calls would result from a decline in the fair value of our investment securities securing our repurchase agreements as well as due to prepayments on the mortgages securing such securities. Similarly, if the estimated fair value of our investment securities increases due to changes in interest rates or other factors, counterparties may release collateral back to us. Our repurchase agreements generally provide that the valuations of securities securing our repurchase agreements are to be obtained from a generally recognized source agreed to by the parties. In certain circumstances, however, our lenders have the sole discretion to determine the value of pledged collateral. In such instances, our lenders are required to act in good faith in making determinations of value. Our repurchase agreements generally provide that in the event of a margin call, we must provide additional securities or cash on the same business day that a margin call is made if the lender provides us notice prior to the margin notice deadline on such day.

As of March 31, 2019, we had met all of our margin requirements and we had unrestricted cash and cash equivalents of $0.9 billion and unpledged securities of approximately $4.5 billion, including securities pledged to us and unpledged interests in our consolidated VIEs, available to meet margin calls on our repurchase agreements and other funding liabilities, derivative instruments and for other corporate purposes.

Although we believe we will have adequate sources of liquidity available to us through repurchase agreement financing to execute our business strategy, there can be no assurances that repurchase agreement financing will be available to us upon the maturity of our current repurchase agreements to allow us to renew or replace our repurchase agreement financing on favorable terms or at all. If our repurchase agreement lenders default on their obligations to resell the underlying collateral back to us at the end of the term, we could incur a loss equal to the difference between the value of the collateral and the cash we originally received.

To help manage the adverse impact of interest rate changes on the value of our investment portfolio as well as our cash flows, we utilize an interest rate risk management strategy under which we use derivative financial instruments. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing at a faster rate than the earnings of our long-term fixed rate assets during a period of rising interest rates. The primary derivative instruments that we use are interest rate swaps, interest rate swaptions, U.S. Treasury securities and U.S. Treasury futures contracts. Please refer to Notes 3 and 6 to our Consolidated Financial Statements in this Form 10-Q for further details regarding our use of derivative instruments.

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As with repurchase agreements, our derivative agreements typically require that we pledge/receive collateral to/from our counterparties. Our counterparties, or the central clearing agency, typically have the sole discretion to determine the value of the derivative instruments and the value of the collateral securing such instruments. In the event of a margin call, we must provide additional collateral generally on the same or next business day. We minimize counterparty credit risk associated with our derivative instruments by limiting our counterparties to registered central clearing exchanges and major financial institutions with acceptable credit ratings and by monitoring positions with individual counterparties. Excluding centrally cleared derivative instruments, as of March 31, 2019, our amount at risk with any counterparty related to our interest rate swap and swaption agreements was less than 1% of our stockholders' equity. In the case of centrally cleared derivative instruments, we could be exposed to credit risk if the exchange or a central clearing member defaults on its obligations. However, we believe that the risk is minimal due to initial and daily mark-to-market margin requirements, guarantee funds and other resources that are available in the event of a default.

TBA Dollar Roll Transactions

TBA dollar roll transactions used to finance the purchase of Agency RMBS represent a form of off-balance sheet financing accounted for as derivative instruments. (See Notes 3 and 6 to our Consolidated Financial Statements in this Form 10-Q additional details on of our TBA transactions). Under certain market conditions, it may be uneconomical for us to roll our TBA contracts into future months and we may need to take or make physical delivery of the underlying securities. If we were required to take physical delivery to settle a long TBA contract, we would have to fund our total purchase commitment with cash or other financing sources and our liquidity position could be negatively impacted. As of March 31, 2019, we had a net long TBA position with a total market value of $7.0 billion and a net carrying value of $70 million recognized in derivative assets/(liabilities), at fair value, on our Consolidated Balance Sheets in this Form 10-Q.

Our TBA dollar roll contracts are also subject to margin requirements governed by the Mortgage-Backed Securities Division ("MBSD") of the FICC and by our prime brokerage agreements, which may establish margin levels in excess of the MBSD. Such provisions require that we establish an initial margin based on the notional value of the TBA contract, which is subject to increase if the estimated fair value of our TBA contract or the estimated fair value of our pledged collateral declines. The MBSD has the sole discretion to determine the value of our TBA contracts and of the pledged collateral securing such contracts. In the event of a margin call, we must generally provide additional collateral on the same business day.

Settlement of our TBA obligations by taking delivery of the underlying securities as well as satisfying margin requirements could negatively impact our liquidity position. However, since we do not use TBA dollar roll transactions as our primary source of financing, we believe that we will have adequate sources of liquidity to meet such obligations.

Bethesda Securities Regulatory Capital Requirements

BES is subject to regulations of the securities business that include but are not limited to trade practices, capital structure, recordkeeping and conduct of directors, officers and employees.  As a self-clearing registered broker-dealer, BES is required to maintain minimum net regulatory capital as defined by SEC Rule 15c3-1 (the "Rule"). As of March 31, 2019, the minimum net capital required was $0.3 million and BES had excess net capital of $594.2 million. Regulatory capital in excess of the minimum required by the Rule is held to meet levels required by clearing organizations, the clearing bank and other repo counterparties.

Asset Sales and TBA Eligible Securities

We maintain a portfolio of highly liquid mortgage-backed securities. We may sell our Agency securities through the TBA market by delivering them into TBA contracts, subject to "good delivery" provisions promulgated by Securities Industry and Financial Markets Association ("SIFMA"). We may alternatively sell Agency securities that have more unique attributes on a specified basis when such securities trade at a premium over generic TBA securities or if the securities are not otherwise eligible for TBA delivery. Since the TBA market is the second most liquid market (after the U.S. Treasury market), maintaining a significant level of Agency securities eligible for TBA delivery enhances our liquidity profile and provides price support for our TBA eligible securities at or above generic TBA prices. As of March 31, 2019, approximately 94% of our fixed rate Agency RMBS portfolio was eligible for TBA delivery.

Equity Capital

To the extent we raise additional equity capital, we may use cash proceeds from such transactions to purchase additional investment securities, to make scheduled payments of principal and interest on our funding liabilities and/or for other general corporate purposes.  There can be no assurance, however, that we will be able to raise additional equity capital at any particular time or on any particular terms. Furthermore, when the trading price of our common stock is significantly less than our estimate of our current tangible net book value per common share, among other conditions, we may repurchase shares of our common stock, subject to the provisions of a stock repurchase program in effect at such time.

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OFF-BALANCE SHEET ARRANGEMENTS

As of March 31, 2019, we did not maintain relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance, or special purpose or variable interest entities, established to facilitate off-balance sheet arrangements or other contractually narrow or limited purposes. Additionally, as of March 31, 2019, we had not guaranteed obligations of unconsolidated entities or entered into a commitment or intent to provide funding to such entities.

FORWARD-LOOKING STATEMENTS

This document contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.  These forward-looking statements are based on estimates, projections, beliefs and assumptions of our management as of the date of this Quarterly Report on Form 10-Q and involve risks and uncertainties in predicting future results and conditions.  Our actual performance could differ materially from those projected or anticipated in any forward looking statements due to a variety of factors, including, without limitation, changes in interest rates, the yield curve or prepayment rates; the availability and terms of financing; changes in the market value of our assets; the effectiveness of our risk mitigation strategies; conditions in the market for Agency and other mortgage securities; or legislative or regulatory changes that affect our status as a REIT or our exemption from the Investment Company Act of 1940 or that affect the GSE’s or secondary mortgage market in which we participate.  A discussion of risks and uncertainties that could cause actual results to differ from any of our forward-looking statements is included in our most recent Annual Report on Form 10-K and this document under Item 1A. Risk Factors.  We caution readers not to place undue reliance on our forward-looking statements.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Market risk is the exposure to loss resulting from changes in market factors such as interest rates, foreign currency exchange rates, commodity prices and equity prices. The primary market risks that we are exposed to are interest rate, prepayment, spread, liquidity, extension and credit risk.

Interest Rate Risk

We are subject to interest rate risk in connection with the fixed income nature of our assets and the short-term, variable rate nature of our financing obligations. Our operating results depend in large part on differences between the income earned on our assets and our cost of borrowing and hedging activities. The costs associated with our borrowings are generally based on prevailing market interest rates. During a period of rising interest rates, our borrowing costs generally will increase while the yields earned on our existing portfolio of leveraged fixed-rate assets will largely remain static. This can result in a decline in our net interest spread. Changes in the level of interest rates can also affect the rate of mortgage prepayments and the value of our assets.

Interest rates are highly sensitive to many factors, including fiscal and monetary policies and domestic and international economic and political considerations, as well as other factors beyond our control. Subject to maintaining our qualification as a REIT, we engage in a variety of interest rate management techniques to mitigate the influence of interest rate changes on our net interest income and fluctuations of our tangible net asset value. The principal instruments that we use to hedge our interest rate risk are interest rate swaps, swaptions, U.S. Treasury securities and U.S. Treasury futures contracts. Our hedging techniques are highly complex and are partly based on assumed levels of prepayments of our assets. If prepayments are slower or faster than assumed, the maturity our investments will also differ from our expectations, which could reduce the effectiveness of our hedging strategies and may cause losses on such transactions and adversely affect our cash flow.

The severity of potential declines in our tangible net book value due to fluctuations in interest rates would depend on our asset, liability and hedge composition at the time, as well as the magnitude and duration of the interest rate change. Primary measures of an instrument's price sensitivity to interest rate fluctuations are its duration and convexity. Duration measures the estimated percentage change in market value of an instrument that would be caused by a parallel change in short and long-term interest rates. The duration of our assets will vary with changes in interest rates and tends to increase when interest rates rise and decrease when interest rates fall. This "negative convexity" generally increases the interest rate exposure of our investment portfolio in excess of what is measured by duration alone.

We estimate the duration and convexity of our assets using both a third-party risk management system and market data. We review the duration estimates from the third-party model and may make adjustments based on our judgment to better reflect any unique characteristics and market trading conventions associated with certain types of securities.

The table below quantifies the estimated changes in the fair value of our investment portfolio (including derivatives and other securities used for hedging purposes) and in our tangible net book value per common share as of March 31, 2019 and December 31, 2018 should interest rates go up or down by 50 and 100 basis points, assuming instantaneous parallel shifts in the

41

yield curve and including the impact of both duration and convexity. All values in the table below are measured as percentage changes from the base interest rate scenario. The base interest rate scenario assumes interest rates and prepayment projections as of March 31, 2019 and December 31, 2018.

To the extent that these estimates or other assumptions do not hold true, which is likely in a period of high volatility, actual results could differ materially from our projections. Moreover, if different models were employed in the analysis, materially different projections could result. Lastly, while the table below reflects the estimated impact of interest rate changes on a static portfolio, we actively manage our portfolio and we continuously adjust the size and composition of our asset and hedge portfolio. 

Interest Rate Sensitivity 1,2
	March 31, 2019		December 31, 2018
Change in Interest Rate	Estimated Change in Portfolio Market Value	Estimated Change in Tangible Net Book Value Per Common Share	Estimated Change in Portfolio Market Value	Estimated Change in Tangible Net Book Value Per Common Share
-100 Basis Points	-1.0%	-10.6%	-0.7%	-7.3%
-50 Basis Points	-0.2%	-2.6%	-0.1%	-1.0%
+50 Basis Points	-0.3%	-3.6%	-0.3%	-3.1%
+100 Basis Points	-1.1%	-12.4%	-0.9%	-9.3%

________________________________

1. Derived from models that are dependent on inputs and assumptions provided by third parties, assumes there are no changes in mortgage spreads and assumes a static portfolio. Actual results could differ materially from these estimates.

2. Includes the effect of derivatives and other securities used for hedging purposes.

Prepayment Risk

Prepayment risk is the risk that our assets will be repaid at a faster rate than anticipated. Interest rates and numerous other factors affect the rate of prepayments, including housing prices, general economic conditions, loan age, size and loan-to-value ratios, and the pace of GSE buyouts of delinquent loans underlying our securities among other factors. Generally, prepayments increase during periods of falling mortgage interest rates and decrease during periods of rising mortgage interest rates. However, this may not always be the case.

If our assets prepay at a faster rate than anticipated, we may be unable to reinvest the repayments at acceptable yields. If the proceeds are reinvested at lower yields than our existing assets, our net interest income would be negatively impacted. We also amortize or accrete premiums and discounts we pay or receive at purchase relative to the stated principal of our assets into interest income over their projected lives using the effective interest method. If the actual and estimated future prepayment experience differs from our prior estimates, we are required to record an adjustment to interest income for the impact of the cumulative difference in the effective yield.

Extension Risk

Extension risk is the risk that our assets will be repaid at a slower rate than anticipated and generally increases when interest rates rise. In which case, we may have to finance our investments at potentially higher costs without the ability to reinvest principal into higher yielding securities because borrowers prepay their mortgages at a slower pace than originally expected, adversely impacting our net interest spread, and thus our net interest income.

As of March 31, 2019 and December 31, 2018, our investment securities (excluding TBAs) had a weighted average projected CPR of 10.5% and 7.9%, respectively, and a weighted average yield of 3.29% and 3.31%, respectively. The table below presents estimated weighted average projected CPRs and yields for our investment securities should interest rates go up or down by 50 and 100 basis points.

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Interest Rate Sensitivity 1
	March 31, 2019		December 31, 2018
Change in Interest Rate	Weighted Average Projected CPR	Weighted Average Asset Yield 2	Weighted Average Projected CPR	Weighted Average Asset Yield 2
-100 Basis Points	20.3%	3.01%	14.1%	3.15%
-50 Basis Points	15.0%	3.17%	10.3%	3.25%
+50 Basis Points	7.7%	3.36%	6.5%	3.33%
+100 Basis Points	6.2%	3.40%	5.7%	3.38%

________________________________

1. Derived from models that are dependent on inputs and assumptions provided by third parties and assumes a static portfolio. Actual results could differ materially from these estimates. Table excludes TBA securities.

2. Asset yield based on historical cost basis and does not include the impact of retroactive "catch-up" premium amortization adjustments due to changes in projected CPR.

Spread Risk

Spread risk is the risk that the market spread between the yield on our assets and the yield on benchmark interest rates linked to our interest rate hedges, such as U.S. Treasury rates and interest rate swap rates, may vary. The inherent spread risk associated with our investment securities and the resulting fluctuations in fair value of these securities can occur independent of interest rates and may relate to other factors impacting the mortgage and fixed income markets, such as actual or anticipated monetary policy actions by U.S. and foreign central banks, liquidity, or changes in required rates of return on different assets. Our strategies are generally not specifically designed to protect against spread risk, thus while we use interest rate swaps and other hedges to attempt to protect against moves in interest rates, our tangible net book value could decline if spreads widen.

The table below quantifies the estimated changes in the fair value of our assets, net of hedges, and our tangible net book value per common share as of March 31, 2019 and December 31, 2018 should spreads widen or tighten by 10 and 25 basis points. The estimated impact of changes in spreads is in addition to our interest rate shock sensitivity included in the interest rate shock table above. The table below assumes a spread duration of 4.9 and 5.6 years as of March 31, 2019 and December 31, 2018, respectively, based on interest rates and prices as of such dates. However, our portfolio's sensitivity of mortgage spread changes will vary with changes in interest rates and in the size and composition of our portfolio. Therefore, actual results could differ materially from our estimates.

Spread Sensitivity 1,2
	March 31, 2019		December 31, 2018
Change in MBS Spread	Estimated Change in Portfolio Market Value	Estimated Change in Tangible Net Book Value Per Common Share	Estimated Change in Portfolio Market Value	Estimated Change in Tangible Net Book Value Per Common Share
-25 Basis Points	+1.2%	+13.5%	+1.4%	+14.3%
-10 Basis Points	+0.5%	+5.4%	+0.6%	+5.7%
+10 Basis Points	-0.5%	-5.4%	-0.6%	-5.7%
+25 Basis Points	-1.2%	-13.5%	-1.4%	-14.3%

________________________________

1. Spread sensitivity is derived from models that are dependent on inputs and assumptions provided by third parties, assumes there are no changes in interest rates and assumes a static portfolio. Actual results could differ materially from these estimates.

2. Includes the effect of derivatives and other securities used for hedging purposes.

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Liquidity Risk

Our liquidity risk principally arises from financing long-term fixed rate assets with shorter-term variable rate borrowings.  As of March 31, 2019, we had unrestricted cash and cash equivalents of $0.9 billion and unpledged securities of approximately $4.5 billion available to meet margin calls on our funding liabilities and derivative contracts and for other corporate purposes.  However, should the value of our collateral or the value of our derivative instruments suddenly decrease, margin calls relating to our funding liabilities and derivative agreements could increase, causing an adverse change in our liquidity position. Furthermore, there is no assurance that we will always be able to renew (or roll) our short-term funding liabilities. In addition, our counterparties have the option to increase our haircuts (margin requirements) on the assets we pledge against our funding liabilities, thereby reducing the amount that can be borrowed against an asset even if they agree to renew or roll our funding liabilities. Significantly higher haircuts can reduce our ability to leverage our portfolio or even force us to sell assets, especially if correlated with asset price declines or faster prepayment rates on our assets.

In addition, we often utilize TBA dollar roll transactions to invest in and finance Agency RMBS. Under certain conditions it may be uneconomical to roll our TBA dollar roll transactions beyond the next settlement date and we could have to take physical delivery of the underlying securities and settle our obligations for cash, which could negatively impact our liquidity position, result in defaults or force us to sell assets under adverse conditions.

Credit Risk

Our credit sensitive investments, such as CRT and non-Agency securities, expose us to the risk of nonpayment of principal, interest or other remuneration we are contractually entitled to. We are also exposed to credit risk in the event our derivative counterparties do not perform under the terms of our derivative agreements or in the event our repurchase agreement counterparties default on their obligations to resell the underlying collateral back to us at the end of the repo term.

We accept credit exposure related to our credit sensitive assets at levels we deem to be prudent within the context of our overall investment strategy. We attempt to manage this risk through prudent asset selection, pre-acquisition due diligence, post-acquisition performance monitoring, and the sale of assets where we identify negative credit trends. We may also manage credit risk with credit default swaps or other financial derivatives that we believe are appropriate. Additionally, we may vary the mix of our interest rate and credit sensitive assets or our duration gap to adjust our credit exposure and/or improve the return profile of our assets, such as when we believe credit performance is inversely correlated with changes in interest rates. Our credit risk related to derivative and repurchase agreement transactions is largely mitigated by limiting our counterparties to major financial institutions with acceptable credit ratings or to registered central clearinghouses and monitoring concentration levels with any one counterparty. We also monitor and adjust the amount of collateral pledged based on changes in market value.

There is no guarantee that our efforts to manage credit risk will be successful and we could suffer losses if credit performance is worse than our expectations or our counterparties default on their obligations. Excluding amounts cleared through a central clearing exchange, as of March 31, 2019, our maximum amount at risk with any counterparty related to our repurchase agreements was less than 4% of our tangible stockholders' equity and less than 1% of tangible stockholders' equity related to our interest rate swap and swaption agreements.

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Item 4. Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Securities Exchange Act of 1934, as amended (the "Exchange Act") reports is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based on the definition of "disclosure controls and procedures" as promulgated under the Exchange Act and the rules and regulations thereunder. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

We, including our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures as of March 31, 2019. Based on the foregoing, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective.

Changes in Internal Control over Financial Reporting

There have been no changes in our "internal control over financial reporting" (as defined in Rule 13a-15(f) of the Exchange Act) that occurred during the last fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

There have been no material changes to such matters previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2018.

Item 1A. Risk Factors

 There have been no material changes to the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2018.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None.

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Item 6.     Exhibits and Financial Statement Schedules

(a)    Exhibit Index

Exhibit No.    Description

*3.1    AGNC Investment Corp. Amended and Restated Certificate of Incorporation, as amended, incorporated herein by reference to Exhibit 3.1 of Form 10-Q for the quarter ended March 31, 2018 (File No. 001-34057), filed May 7, 2018.

*3.2    AGNC Investment Corp. Third Amended and Restated Bylaws, as amended, incorporated herein by reference to Exhibit 3.2 of Form 10-Q for the quarter ended September 30, 2016 (File No. 001-34057), filed November 7, 2016.

*3.3    Certificate of Designations of 7.750% Series B Cumulative Redeemable Preferred Stock, incorporated herein by reference to Exhibit 3.4 of Form 8-A (File No. 001-34057), filed May 7, 2014.

*3.4    Certificate of Designations of 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, incorporated herein by reference to Exhibit 3.5 of Form 8-A (File No. 001-34057), filed August 18, 2017.

*3.5    Certificate of Elimination of 8.000% Series A Cumulative Redeemable Preferred Stock, incorporated herein by reference to Exhibit 3.1 of Form 8-K (File No 001-34057), filed October 26, 2017.

*3.6    Certificate of Designations of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, incorporated herein by reference to Exhibit 3.5 of Form 8-A (File No 001-34057), filed March 6, 2019.

*4.1    Instruments defining the rights of holders of securities: See Article IV of our Amended and Restated Certificate of Incorporation, as amended, incorporated herein by reference to Exhibit 3.1 of Form 10-Q for the quarter ended March 31, 2018 (File No. 001-34057) filed May 7, 2018.

*4.2    Instruments defining the rights of holders of securities: See Article VI of our Third Amended and Restated Bylaws, as amended, incorporated herein by reference to Exhibit 3.2 of Form 10-Q for the quarter ended September 30, 2016 (File No. 001-34057) filed November 7, 2016.

*4.3    Form of Certificate for Common Stock, incorporated herein by reference to Exhibit 4.3 of Form 10-Q for the quarter ended September 30, 2016 (File No. 001-34057), filed November 7, 2016.

*4.4    Specimen 7.750% Series B Cumulative Redeemable Preferred Stock Certificate, incorporated herein by reference to Exhibit 4.1 of Form 8-A (File No. 001-34057), filed May 7, 2014.

*4.5    Specimen 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock Certificate, incorporated herein by reference to Exhibit 4.1 of Form 8-A (File No. 001-34057), filed August 18, 2017.

*4.6    Specimen 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock Certificate, incorporated herein by reference to Exhibit 4.1 of Form 8-A (File No. 001-34057), filed March 6, 2019.

*4.7Deposit Agreement relating to 7.750% Series B Cumulative Redeemable Preferred Stock, dated May 8, 2014, among American Capital Agency Corp., Computershare Inc. and Computershare Trust Company, N.A., jointly as depositary, incorporated herein by reference to Exhibit 4.2 of Form 8-K (File No. 001-34057), filed May 8, 2014.

*4.8    Form of Depositary Receipt representing 1/1,000th of a share of 7.750% Series B Cumulative Redeemable Preferred Stock (included as part of Exhibit 4.7), incorporated herein by reference to Exhibit A of Exhibit 4.2 of Form 8-K (File No. 001-34057), filed May 8, 2014.

*4.9Deposit Agreement relating to 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, dated August 22, 2017, among AGNC Investment Corp., Computershare Inc. and Computershare Trust Company, N.A., jointly as depositary, incorporated herein by reference to Exhibit 4.2 of Form 8-K (File No. 001-34057) filed August 22, 2017.

*4.10    Form of Depositary Receipt representing 1/1,000th of a share of 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (included as part of Exhibit 4.9), incorporated herein by reference to Exhibit A of Exhibit 4.2 of Form 8-K (File No. 001-34057) filed August 22, 2017.

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*4.11    Deposit Agreement relating to 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock, dated March 6, 2019, among AGNC Investment Corp., Computershare Inc. and Computershare Trust Company, N.A., jointly as depositary, incorporated herein by reference to Exhibit 4.2 of Form 8-K (File No. 001-34057) filed March 6, 2019.

*4.12Form of Depositary Receipt representing 1/1,000th of a share of 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (included as part of Exhibit 4.11), incorporated herein by reference to Exhibit A of Exhibit 4.2 of Form 8-K (File No. 001-34057) filed March 6, 2019.

† 10    Form of AGNC Investment Corp. 2016 Equity and Incentive Compensation Plan Restricted Stock Unit Agreement for Non-Employee Directors, filed herewith.

31.1    Certification of CEO Pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002.

31.2    Certification of CFO Pursuant to Section 302(a) of the Sarbanes-Oxley Act of 2002.

32    Certification of CEO and CFO Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS** The instance document does not appear in the interactive data file because its XBRL tags are embedded within the inline XBRL document

101.SCH** XBRL Taxonomy Extension Schema Document

101.CAL** XBRL Taxonomy Extension Calculation Linkbase Document

101.LAB** XBRL Taxonomy Extension Labels Linkbase Document

101.PRE** XBRL Taxonomy Extension Presentation Linkbase Document

101.DEF** XBRL Taxonomy Extension Definition Linkbase Document

________________________________

*    Previously filed

** This exhibit is being furnished rather than filed, and shall not be deemed incorporated by reference into any filing, in accordance with Item 601 of Regulation S-K

† Management contract or compensatory plan or arrangement

(b) Exhibits

See the exhibits filed herewith.

(c) Additional financial statement schedules

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Company has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

		AGNC INVESTMENT CORP.
		By:	/s/    GARY D. KAIN
			Gary D. Kain Chief Executive Officer and Chief Investment Officer (Principal Executive Officer)
Date:	May 3, 2019
		By:	/s/    BERNICE E. BELL
			Bernice E. Bell Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)
Date:	May 3, 2019

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EX-10

Exhibit 10

AGNC INVESTMENT CORP.

2016 EQUITY AND INCENTIVE COMPENSATION PLAN

RESTRICTED STOCK UNIT AGREEMENT

This RESTRICTED STOCK UNIT AGREEMENT (this “Agreement”) is entered into as of ____________, 20__ (the “Date of Grant”), by and between AGNC Investment Corp., a Delaware corporation (the “Company”), and __________ (“Grantee”).

1. Certain Definitions. Capitalized terms used, but not otherwise defined, in this Agreement will have the meanings given to such terms in the Company’s 2016 Equity and Incentive Compensation Plan (the “Plan”).

2.Grant of RSUs. Subject to and upon the terms, conditions and restrictions set forth in this Agreement and in the Plan, the Company hereby grants to Grantee _____Restricted Stock Units (the “RSUs”). Each RSU shall represent the right of Grantee to receive one share of Common Stock subject to and upon the terms and conditions of this Agreement.

3.Restrictions on Transfer of RSUs. Neither the RSUs evidenced hereby nor any interest therein or in the shares of Common Stock underlying such RSUs shall be transferable prior to payment to Grantee pursuant to Section 7 hereof, other than as described in Section 15 of the Plan.

4.Vesting. The RSUs covered by this Agreement shall become nonforfeitable and payable to Grantee pursuant to Section 7 hereof on the date that is the earlier of (i) 12 months following the Date of Grant or (ii) the next annual meeting of the Company’s stockholders, in each case only if Grantee remains in continuous service with the Company or any of its Subsidiaries (or any of their successors) as of each such date.

5.Accelerated Vesting. Notwithstanding the provisions of Section 4 hereof, all of the RSUs covered by this Agreement that have not already vested and become nonforfeitable pursuant to Section 4 hereof will become nonforfeitable and payable to Grantee pursuant to Section 7 hereof earlier than the time provided in Section 4 hereof upon the occurrence of a Change of Control, but only if such event also constitutes a “change in the ownership,” “change in effective control” and/or a “change in the ownership of a substantial portion of assets” of the Company, as those terms are defined under Treasury Regulations Section 1.409A-3(i)(5).

6.Forfeiture. Except to the extent the RSUs covered by this Agreement have become nonforfeitable pursuant to Section 4 or Section 5 hereof, the RSUs covered by this Agreement shall be forfeited automatically and without further notice, and shall no longer be considered covered by this Agreement, on the date of Grantee’s termination of continuous service.

7.Form and Time of Payment of RSUs.

(a)Form. Payment in respect of the RSUs, after and to the extent they have become nonforfeitable pursuant to Section 4 or Section 5 hereof, shall be made in the form of shares of Common Stock. Payment shall only be made in whole shares of Common Stock; any fractional shares shall be paid to Grantee in cash. The Company’s obligations to Grantee with respect to the RSUs will be satisfied in full upon the issuance of the shares of Common Stock (or, with respect to fractional shares, upon the payment in cash) corresponding to such RSUs. Grantee agrees that he or she will cooperate with the Company to facilitate payment of the RSUs, which cooperation may include being required to maintain a brokerage account with the Plan’s recordkeeper.

(b) Timing.

(i)RSUs that become nonforfeitable pursuant to Section 4 hereof shall be paid within ten (10) days following the date on which such RSUs become nonforfeitable.

(ii)RSUs that become nonforfeitable pursuant to Section 5 hereof shall be paid on the date of such Change of Control.

Notwithstanding the foregoing, if Grantee made a permitted deferral election with respect to any RSUs covered by this Agreement on or before December 31, 20__, such RSUs shall be paid at the time set forth in such deferral election. If Grantee did not make a valid deferral election on or before December 31, 20__ ], he or she will be deemed to have elected not to defer payment of any RSUs. Under applicable tax rules, late deferral elections are not permitted.

8. Dividend Equivalents; Other Rights.

(a)From and after the Date of Grant and until the earlier of (i) the time when the RSUs become nonforfeitable and are paid to Grantee in accordance with Section 7 hereof or (ii) the time when Grantee’s right to receive shares of Common Stock in payment of the RSUs is forfeited in accordance with Section 6 hereof, on the date that the Company pays a cash dividend (if any) or other cash distribution to holders of shares of Common Stock generally, Grantee shall be entitled to a number of additional RSUs determined by dividing (A) the product of (x) the dollar amount of such cash dividend or other cash distribution paid per share of Common Stock on such date and (y) the total number of RSUs (including dividend equivalents credited thereon) previously credited to Grantee pursuant to this Agreement as of such date, to the extent such RSUs have not become nonforfeitable and paid to Grantee in accordance with Section 7 hereof, by (B) the Market Value per Share on such date. Such dividend equivalents (if any) shall be subject to the same applicable terms and conditions (including vesting, forfeitability, dividend equivalents and payment) as apply to the RSUs as to which the dividend equivalents were credited.

(b)Grantee shall have no rights of ownership in the shares of Common Stock underlying the RSUs and no right to vote the shares of Common Stock underlying the RSUs until the date on which the shares of Common Stock underlying the RSUs are issued or transferred to Grantee pursuant to Section 7 hereof.

(c)The obligations of the Company under this Agreement will be merely that of an unfunded and unsecured promise of the Company to deliver shares of Common Stock or pay cash in the future, and the rights of Grantee will be no greater than that of an unsecured general creditor. No assets of the Company will be held or set aside as security for the obligations of the Company under this Agreement.

9.No Right to Future Awards or Employment. The grant of the RSUs under this Agreement to Grantee is a voluntary, discretionary award being made on a one-time basis and it does not constitute a commitment to make any future awards. The grant of the RSUs and any payments made hereunder will not be considered salary or other compensation for purposes of any severance pay or similar allowance, except as otherwise required by law. Nothing contained in this Agreement shall confer upon Grantee any right to remain in continuous service with the Company or any of its Subsidiaries, nor limit or affect in any manner the right of the Company or any of its Subsidiaries to terminate the continuous service or adjust the compensation of Grantee. Neither this Agreement nor any other action taken in connection herewith shall constitute or be evidence of any agreement or understanding, express or implied, that Grantee is an employee of the Company or any subsidiary of the Company.

10.Adjustments. The number of shares of Common Stock issuable for each RSU and the other terms and conditions of the grant evidenced by this Agreement are subject to adjustment as provided in Section 11 of the Plan.

11.Withholding Taxes. By signing this Agreement, Grantee represents that he or she has reviewed with his or her own tax advisors the federal, state, local and foreign tax consequences of the transactions contemplated by this Agreement and that he or she is relying solely on such advisors and not on any statements or representations of the Company or any of its agents. Grantee understands and agrees that he or she (and not the Company) shall be responsible for any tax liability that may arise as a result of the

transaction contemplated by this Agreement, to the extent Grantee does not become an employee of the Company.

12.Compliance With Law. The Company shall make reasonable efforts to comply with all applicable federal and state securities laws; provided, however, notwithstanding any other provision of the Plan and this Agreement, the Company shall not be obligated to issue any of the shares of Common Stock pursuant to this Agreement if the issuance thereof would result in a violation of any such law.

13.Amendments. Any amendment to the Plan shall be deemed to be an amendment to this Agreement to the extent that the amendment is applicable hereto; provided, however, that (a) no amendment shall adversely affect the rights of Grantee under this Agreement without Grantee’s written consent and (b) Grantee’s consent shall not be required to an amendment that is deemed necessary by the Company to ensure exemption from or compliance with Section 409A of the Code.

14.Severability. In the event that one or more of the provisions of this Agreement shall be invalidated for any reason by a court of competent jurisdiction, any provision so invalidated shall be deemed to be separable from the other provisions hereof, and the remaining provisions hereof shall continue to be valid and fully enforceable.

15.Relation to Plan. This Agreement is subject to the terms and conditions of the Plan. To the extent not expressly set forth in this Agreement, the terms of the Plan shall govern.

16.Acknowledgement. Grantee acknowledges that Grantee (a) has received a copy of the Plan, (b) has had an opportunity to review the terms of this Agreement and the Plan, (c) understands the terms and conditions of this Agreement and the Plan and (d) agrees to such terms and conditions.

17.Successors and Assigns. Without limiting Section 3 hereof, the provisions of this Agreement shall inure to the benefit of, and be binding upon, the successors, administrators, heirs, legal representatives and assigns of Grantee, and the successors and assigns of the Company.

18.Governing Law. This Agreement shall be governed by and construed in accordance with the internal substantive laws of the State of Delaware, without giving effect to any principle of law that would result in the application of the law of any other jurisdiction.

19.Notices. Any notice to the Company provided for herein shall be in writing (including electronically) to the Company, marked Attention: General Counsel, and any notice to Grantee shall be addressed to Grantee at Grantee’s address on file with the Company at the time of such notice. Except as otherwise provided herein, any written notice shall be deemed to be duly given if and when delivered personally or deposited in the United States mail, postage and fees prepaid, and addressed as aforesaid. Any party may change the address to which notices are to be given hereunder by written notice to the other party as herein specified (provided that for this purpose any mailed notice shall be deemed given on the third business day following deposit of the same in the United States mail).

20.Electronic Delivery. The Company may, in its sole discretion, deliver any documents related to the RSUs and Grantee’s participation in the Plan, or future awards that may be granted under the Plan, by electronic means. Grantee hereby consents to receive such documents by electronic delivery and, if requested, agrees to participate in the Plan through an online or electronic system established and maintained by the Company or another third party designated by the Company.

21.Section 409A of the Code. To the extent applicable, it is intended that this Agreement and the Plan comply with or be exempt from the provisions of Section 409A of the Code. This Agreement and the Plan shall be administered in a manner consistent with this intent, and any provision that would cause this Agreement or the Plan to fail to comply with or be exempt from Section 409A of the Code shall have no force or effect until amended to comply with or be exempt from Section 409A of the Code (which amendment may be retroactive to the extent permitted by Section 409A of the Code and may be made by the Company without the consent of Grantee). Any reference in this Agreement to Section 409A of the Code will also include any proposed, temporary or final regulations, or any other guidance, promulgated with respect to such Section by the U.S. Department of the Treasury or the Internal Revenue Service. Notwithstanding anything in this Agreement or the Plan to the contrary, all payments made to Grantee

pursuant to this Agreement will be made within the short-term deferral period specified in Treasury Regulations Section 1.409A-1(b)(4).

22.Counterparts. This Agreement may be executed in one or more counterparts (including facsimile and other electronically transmitted counterparts), each of which shall be deemed to be an original but all of which together will constitute one and the same agreement.

[SIGNATURES ON FOLLOWING PAGE]

IN WITNESS WHEREOF, the Company has caused this Agreement to be executed on its behalf by its duly authorized officer and Grantee has executed this Agreement, as of the Date of Grant.

AGNC INVESTMENT CORP.

By:

Name:

Title:

GRANTEE’S SIGNATURE

Print Name:

EX-31.1

Exhibit 31.1

AGNC Investment Corp.

Certification Pursuant to Section 302(a)

of the Sarbanes-Oxley Act of 2002

I, Gary D. Kain, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of AGNC Investment Corp.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an Annual Report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors:

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	May 3, 2019
	/s/    GARY D. KAIN
	Gary D. Kain
	Chief Executive Officer and Chief Investment Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

AGNC Investment Corp.

Certification Pursuant to Section 302(a)

of the Sarbanes-Oxley Act of 2002

I, Bernice E. Bell, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of AGNC Investment Corp;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entitles, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an Annual Report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors:

(a) All significant deficiencies and material weakness in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:	May 3, 2019
	/s/    BERNICE E. BELL
	Bernice E. Bell
	Senior Vice President and Chief Financial Officer (Principal Financial Officer)

EX-32

Exhibit 32

AGNC Investment Corp.

Certification of CEO and CFO Pursuant to 18 U.S.C. Section 1350,

as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

We, Gary D. Kain, Chief Executive Officer and Chief Investment Officer, and Bernice E. Bell, Senior Vice President and Chief Financial Officer of AGNC Investment Corp. (the “Company”), certify pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350 that:

1. The Quarterly Report on Form 10-Q of the Company for the quarter ended March 31, 2019 (the “Report”) fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934 (15 U.S.C. 78m); and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

	/s/    GARY D. KAIN
Name:	Gary D. Kain
Title:	Chief Executive Officer and Chief Investment Officer (Principal Executive Officer)
Date:	May 3, 2019
	/s/    BERNICE E. BELL
Name:	Bernice E. Bell
Title:	Senior Vice President and Chief Financial Officer (Principal Financial Officer)
Date:	May 3, 2019

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 30, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	AGNC INVESTMENT CORP.
Entity Central Index Key	0001423689
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		536,412,404
Trading Symbol	AGNC
Entity Current Reporting Status	Yes

XML

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Assets:
Agency securities, at fair value (including pledged securities of $89,471 and $78,619, respectively)	$ 93,044	$ 82,291
Agency securities transferred to consolidated variable interest entities, at fair value (pledged securities)	425	436
Credit risk transfer securities, at fair value (including pledged securities of $142 and $141, respectively)	1,129	1,012
Non-Agency securities, at fair value (including pledged securities of $45 and $45, respectively)	672	548
U.S. Treasury securities, at fair value (including pledged securities of $121 and $0, respectively)	121	46
Cash and cash equivalents	929	921
Restricted cash and cash equivalents	517	599
Derivative assets, at fair value	253	273
Receivable for investment securities sold (pledged securities)	439	489
Receivable under reverse repurchase agreements	20,430	21,813
Goodwill and other intangible assets, net	526	526
Other assets	322	287
Total assets	118,807	109,241
Liabilities:
Repurchase Agreements	86,685	75,717
Debt of consolidated variable interest entities, at fair value	266	275
Payable for investment securities purchased	1,125	1,204
Derivative liabilities, at fair value	53	84
Dividends payable	107	106
Obligation to return securities borrowed under reverse repurchase agreements, at fair value	19,275	21,431
Accounts payable and other liabilities	795	518
Total liabilities	108,306	99,335
Stockholders' equity:
7.750% Series B Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $175)	169	169
7.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $325)	315	315
6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock (aggregate liquidation preference of $235)	227	0
Common stock - $0.01 par value; 900 and 900 shares authorized, respectively; 536.3 shares issued and outstanding	5	5
Additional paid-in capital	13,795	13,793
Retained deficit	(3,467)	(3,433)
Accumulated other comprehensive loss	(543)	(943)
Total stockholders' equity	10,501	9,906
Total liabilities and stockholders' equity	$ 118,807	$ 109,241

XML

Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Millions, $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 89,966	$ 79,182
Preferred Stock B, Liquidation Preference, Value	175	175
Preferred Stock C, Liquidation Preference, Value	325	325
Preferred Stock D, Liquidation Preference, Value	$ 235	$ 0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	900.0	900.0
Common Stock, Shares, Issued	536.3	536.3
Common Stock, Shares, Outstanding	536.3	536.3
Agency Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 89,471	$ 78,619
Credit Risk Transfer Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	142	141
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	45	45
US Treasury Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	617	437
Receivable for securities sold [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	439	489
Asset Pledged as Collateral [Member] | US Treasury Securities [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 121	$ 0

XML

Consolidated Statements Of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Dividends declared per common share	$ 0.54	$ 0.54
Interest income:
Interest income	$ 705	$ 431
Interest expense	541	206
Net interest income	164	225
Other gain (loss), net:
Gain (loss) on sale of investment securities, net	60	(2)
Unrealized gain (loss) on investment securities measured at fair value through net income, net	1,060	(523)
Gain (loss) on derivative instruments and other securities, net	(1,000)	738
Management Fee Income	0	4
Total other gain, net:	120	217
Expenses:
Compensation and benefits	10	10
Other operating expense	9	8
Total operating expense	19	18
Net income	265	424
Dividend on preferred stock	10	9
Net income available to common stockholders	255	415
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net	(400)	621
Comprehensive income (loss)	665	(197)
Comprehensive income (loss) available (attributable) to common stockholders	$ 655	$ (206)
Weighted average number of common shares outstanding - basic	536.7	391.3
Weighted average number of common shares outstanding - diluted	537.2	391.5
Net income per common share - basic	$ 0.48	$ 1.06
Net income per common share - diluted	$ 0.47	$ 1.06

XML

Consolidated Statement of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Series B Preferred Stock [Member] Preferred Stock [Member]	Series C Preferred Stock [Member] Preferred Stock [Member]	Series D Preferred Stock [Member] Preferred Stock [Member]
Balance, value at Dec. 31, 2017	$ 8,754	$ 4	$ 11,173	$ (2,562)	$ (345)	$ 169	$ 315	$ 0
Balance, Common Stock, shares at Dec. 31, 2017		391.3
Net income (loss)	424			424
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	(621)				(621)
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options	1		1
Proceeds from Issuance of Preferred Stock and Preference Stock	0
Preferred dividends declared	(9)			(9)
Common dividends declared	(211)			(211)
Balance, value at Mar. 31, 2018	8,338	$ 4	11,174	(2,358)	(966)	169	315	0
Balance, Common Stock, shares at Mar. 31, 2018		391.3
Balance, value at Dec. 31, 2018	$ 9,906	$ 5	13,793	(3,433)	(943)	169	315	0
Balance, Common Stock, shares at Dec. 31, 2018	536.3	536.3
Net income (loss)	$ 265			265
Other comprehensive income (loss):
Unrealized Gains and (Losses), Net	400				400
Adjustments to Additional Paid in Capital, Share-based Compensation and Exercise of Stock Options	2		2
Proceeds from Issuance of Preferred Stock and Preference Stock	227
Preferred dividends declared	(10)			(10)
Common dividends declared	(289)			(289)
Balance, value at Mar. 31, 2019	$ 10,501	$ 5	$ 13,795	$ (3,467)	$ (543)	$ 169	$ 315	$ 227
Balance, Common Stock, shares at Mar. 31, 2019	536.3	536.3

XML

Consolidated Statements Of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Cash Flows [Abstract]
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,446	$ 1,358
Operating activities:
Net income (loss)	265	424
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of premiums and discounts on mortgage-backed securities, net	142	69
Amortization of intangible assets	0	1
Stock based compensation	2	1
(Gain) loss on sale of investment securities, net	(60)	2
Unrealized (gain) loss on investment securities measured at fair value through net income, net	(1,060)	523
(Gain) loss on derivative instruments and other securities, net	1,000	(738)
(Increase) decrease in other assets	(35)	3
Increase in accounts payable and other accrued liabilities	75	3
Net cash provided by operating activities	329	288
Investing activities:
Purchases of Agency mortgage-backed securities	(16,038)	(2,287)
Purchases of credit risk transfer and non-Agency securities	(499)	(215)
Proceeds from sale of Agency mortgage-backed securities	4,694	1,181
Proceeds from sale of credit risk transfer and non-Agency securities	297	208
Principal collections on Agency mortgage-backed securities	1,889	1,661
Principal collections on credit risk transfer and non-Agency securities	5	0
Payments on U.S. Treasury securities	(7,550)	(1,345)
Proceeds from U.S. Treasury securities	5,103	1,403
Net proceeds from reverse repurchase agreements	1,526	231
Net proceeds from (payments on) derivative instruments	(714)	466
Net proceeds from (payments on) other investing activity	0	(16)
Net cash (used in) provided by investing activities	(11,287)	1,287
Financing activities:
Proceeds from repurchase arrangements	930,289	243,168
Payments on repurchase agreements	(919,321)	(244,507)
Payments on debt of consolidated variable interest entities	(13)	(21)
Net proceeds from preferred stock issuance	227	0
Cash dividends paid	(298)	(220)
Net cash (used in) provided by financing activities	10,884	(1,580)
Net change in cash and cash equivalents	(74)	$ (5)
Cash and cash equivalents at end of period	$ 929

XML

Unaudited Interim Consolidated Financial Statements

3 Months Ended

Mar. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Text Block]

Basis of Presentation

The unaudited interim consolidated financial statements of AGNC Investment Corp. (referred throughout this report as the "Company," "we," "us" and "our") are prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. In the opinion of management, all adjustments, consisting solely of normal recurring accruals, necessary for the fair presentation of financial statements for the interim period have been included. The current period’s results of operations are not necessarily indicative of results that ultimately may be achieved for the year.

Our unaudited interim consolidated financial statements include the accounts of all of our wholly-owned subsidiaries and variable interest entities for which we are the primary beneficiary. Significant intercompany accounts and transactions have been eliminated.

XML

Organization

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization

Organization

We were organized in Delaware on January 7, 2008 and commenced operations on May 20, 2008 following the completion of our initial public offering. Our common stock is traded on The Nasdaq Global Select Market under the symbol "AGNC."

We are internally-managed, and our principal objective is to provide our stockholders with attractive risk-adjusted returns through a combination of monthly dividends and tangible net book value accretion. We generate income from the interest earned on our investments, net of associated borrowing and hedging costs, and net realized gains and losses on our investment and hedging activities.

We operate to qualify to be taxed as a real estate investment trust ("REIT") under the Internal Revenue Code of 1986, as amended (the "Internal Revenue Code"). As a REIT, we are required to distribute annually 90% of our taxable income. As a REIT, we will generally not be subject to U.S. federal or state corporate taxes on our taxable income to the extent that we distribute our annual taxable income to our stockholders on a timely basis. It is our intention to distribute 100% of our taxable income, after application of available tax attributes, within the limits prescribed by the Internal Revenue Code, which may extend into the subsequent tax year.

We invest primarily in Agency residential mortgage-backed securities ("Agency RMBS") for which the principal and interest payments are guaranteed by a U.S. Government-sponsored enterprise ("GSE") or a U.S. Government agency. We also invest in other types of mortgage and mortgage-related securities, such as credit risk transfer ("CRT") securities and non-Agency residential and commercial mortgage-backed securities ("non-Agency RMBS" and "CMBS," respectively), where repayment of principal and interest is not guaranteed by a GSE or U.S. Government agency and in other investments in, or related to, the housing, mortgage or real estate markets. We fund our investments primarily through borrowings structured as repurchase agreements.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Investment Securities

Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae").

CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans.

Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, overcollateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS.

All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities acquired after fiscal year 2016. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"). Unrealized gains and losses on securities for which we elected the fair value option or are classified as trading are reported in net income through other gain (loss) during the period in which they occur. Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gains or losses to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period, as the fair value changes for these assets are presented in a manner consistent with the presentation and timing of the fair value changes of our derivative instruments.

We estimate the fair value of our investment securities based on prices provided by multiple third-party pricing services and non-binding dealer quotes (collectively "pricing sources"). These pricing sources use various valuation approaches, including market and income approaches, using "Level 2" inputs. The pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value of our Agency RMBS based on observed quoted prices for forward contracts in the Agency RMBS "to-be-announced" market ("TBA securities") of the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, which may include maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. The pricing sources may also utilize discounted cash flow model-derived pricing techniques to estimate the fair value of investment securities. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. We review the pricing estimates obtained from the pricing sources and perform procedures to validate their reasonableness. Refer to Note 8 for further discussion of fair value measurements.

We evaluate our investments designated as available-for-sale for other-than-temporary impairment ("OTTI") on at least a quarterly basis. The determination of whether a security is other-than-temporarily impaired may involve judgments and assumptions based on subjective and objective factors. When a security is impaired, an OTTI is considered to have occurred if any one of the following three conditions exists as of the financial reporting date: (i) we intend to sell the security (that is, a decision has been made to sell the security), (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis or (iii) we do not expect to recover the security's amortized cost basis, even if we do not intend to sell the security and it is not more likely than not that we will be required to sell the security. A general allowance for unidentified impairments in a portfolio of securities is not permitted.

Interest Income

Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs.

We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate the reasonableness of the third-party estimates. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previously estimated future prepayments and (ii) actual prepayments to date and our current estimated future prepayments. If the actual and estimated future prepayment experience differs from our prior estimate of prepayments, we are required to record an adjustment in the current period to the amortization or accretion of premiums and discounts for the cumulative difference in the effective yield through the reporting date.

At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.

Repurchase Agreements 

We finance the acquisition of securities for our investment portfolio primarily through repurchase transactions under master repurchase agreements. Pursuant to ASC Topic 860, Transfers and Servicing, we account for repurchase transactions as collateralized financing transactions, which are carried at their contractual amounts (cost), plus accrued interest. Our repurchase agreements typically have maturities of less than one year but may extend up to five years or more. Interest rates on our repurchase agreements generally correspond to one or three-month LIBOR plus or minus a fixed spread. The fair value of our repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

Reverse Repurchase Agreements and Obligation to Return Securities Borrowed under Reverse Repurchase Agreements

We borrow securities to cover short sales of U.S. Treasury securities through reverse repurchase transactions under our master repurchase agreements (see Derivative Instruments below). We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. Our reverse repurchase agreements typically have maturities of 30 days or less. The fair value of our reverse repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

Derivative Instruments

We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities as well as to periodically reduce our exposure to Agency RMBS.

We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Cash receipts and payments related to derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section.

The use of derivative instruments creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. Our derivative agreements require that we post or receive collateral to mitigate such risk. We also attempt to minimize our risk of loss by limiting our counterparties to registered central clearing exchanges and major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.

Interest rate swap agreements

We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate based

on one or three-month LIBOR ("payer swaps") with terms up to 20 years. The majority of our interest rate swaps are centrally cleared through a registered commodities exchange. We value centrally cleared interest rate swaps using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including LIBOR, swap rates and the forward yield curve. Our centrally cleared swaps require that we post an "initial margin" amount determined by the clearing exchange, which is generally intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability.

We value non-centrally cleared swaps using a combination of third-party valuations obtained from pricing services and the swap counterparty. The third-party valuations are model-driven using observable inputs, including LIBOR, swap rates and the forward yield curve. We also consider both our own and our counterparties' nonperformance risk in estimating the fair value of our interest rate swaps. In considering the effect of nonperformance risk, we assess the impact of netting and credit enhancements, such as collateral postings and guarantees, and have concluded that our own and our counterparty risk is not significant to the overall valuation of these agreements.

Interest rate swaptions

We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The premium paid for interest rate swaptions is reported as an asset in our consolidated balance sheets. We estimate the fair value of interest rate swaptions using a combination of inputs from counterparty and third-party pricing models based on the fair value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option, adjusted for non-performance risk, if any. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid.

TBA securities

A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing.

We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. We estimate the fair value of TBA securities based on similar methods used to value our Agency RMBS securities.

U.S. Treasury securities

We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We borrow U.S. Treasury securities under reverse repurchase agreements to cover short sales of U.S. Treasury securities. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Loss Contingencies

We evaluate the existence of any pending or threatened litigation or other potential claims against the Company in accordance with ASC Topic 450, Contingencies, which requires that we assess the likelihood and range of potential outcomes of any such

matters. We are the defendant in three stockholder derivative lawsuits alleging that certain of our current and former directors and officers breached fiduciary duties and wasted corporate assets relating to past renewals of the management agreement with our former external manager and the internalization of our management on July 1, 2016. Although the outcomes of these cases cannot be predicted with certainty, we do not believe that these cases have merit or will result in a material liability, and, as of March 31, 2019, we did not accrue a loss contingency related to these matters.

Recent Accounting Pronouncements

We consider the applicability and impact of all Accounting Standards Updates ("ASUs") issued by the Financial Accounting Standards Board. ASUs not listed below were determined to be either not applicable, are not expected to have a significant impact on our consolidated financial statements when adopted or did not have a significant impact on our consolidated financial statements upon adoption.

ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Allowances for credit losses on available-for-sale debt securities will be recognized, rather than direct reductions in the amortized cost of the investments. The new model also requires the estimation of lifetime expected credit losses and corresponding recognition of allowance for losses on trade and other receivables, held-to-maturity debt securities, loans, and other instruments held at amortized cost. The ASU requires certain recurring disclosures and is effective for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2019, with early adoption permitted for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2018. ASU 2016-13 is not expected to have a significant impact on our consolidated financial statements.

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Investment Securities

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment Securities

As of March 31, 2019 and December 31, 2018, our investment portfolio consisted of $95.3 billion and $84.3 billion of investment securities, at fair value, respectively, and $7.0 billion and $7.3 billion of TBA securities, at fair value, respectively. Our TBA position is reported at its net carrying value of $70 million and $70 million as of March 31, 2019 and December 31, 2018, respectively, in derivative assets / (liabilities) on our accompanying consolidated balance sheets. The net carrying value of our TBA position represents the difference between the fair value of the underlying Agency security in the TBA contract and the cost basis or the forward price to be paid or received for the underlying Agency security.

As of March 31, 2019 and December 31, 2018, our investment securities had a net unamortized premium balance of $3.0 billion and $2.9 billion, respectively.

The following tables summarize our investment securities as of March 31, 2019 and December 31, 2018, excluding TBA securities, (dollars in millions). Details of our TBA securities as of each of the respective dates are included in Note 6.

	March 31, 2019				December 31, 2018
Investment Securities	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Agency RMBS:
Fixed rate	$	92,374	$	92,502	$	83,047	$	81,753
Adjustable rate	199		201		212		213
CMO	555		555		588		583
Interest-only and principal-only strips	166		179		172		178
Multifamily	31		32		—		—
Total Agency RMBS	93,325		93,469		84,019		82,727
Non-Agency RMBS	313		319		264		266
CMBS	343		353		280		282
CRT securities	1,109		1,129		1,006		1,012
Total investment securities	$	95,090	$	95,270	$	85,569	$	84,287

	March 31, 2019
	Agency RMBS									Non-Agency
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	16,709		$	5,493		$	23		$	6		$	—		$	—		$	22,231
Unamortized discount	(11		)	(2		)	—			—			—			—			(13		)
Unamortized premium	849			325			—			—			—			—			1,174
Amortized cost	17,547			5,816			23			6			—			—			23,392
Gross unrealized gains	19			5			1			—			—			—			25
Gross unrealized losses	(402		)	(166		)	—			—			—			—			(568		)
Total available-for-sale securities, at fair value	17,164			5,655			24			6			—			—			22,849
Securities remeasured at fair value through earnings:
Par value	42,546			25,501			—			317			409			1,087			69,860
Unamortized discount	(74		)	(6		)	—			(11		)	(70		)	(13		)	(174		)
Unamortized premium	1,138			834			—			—			5			35			2,012
Amortized cost	43,610			26,329			—			306			344			1,109			71,698
Gross unrealized gains	620			340			—			7			10			22			999
Gross unrealized losses	(172		)	(101		)	—			—			(1		)	(2		)	(276		)
Total securities remeasured at fair value through earnings	44,058			26,568			—			313			353			1,129			72,421
Total securities, at fair value	$	61,222		$	32,223		$	24		$	319		$	353		$	1,129		$	95,270
Weighted average coupon as of March 31, 2019	3.83		%	3.92		%	3.72		%	3.86		%	4.65		%	5.69		%	3.88		%
Weighted average yield as of March 31, 2019 1	3.24		%	3.30		%	2.06		%	4.22		%	4.61		%	4.75		%	3.29		%

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1. Incorporates a weighted average future constant prepayment rate assumption of 10.5% based on forward rates as of March 31, 2019.

	December 31, 2018
	Agency RMBS									Non-Agency
Investment Securities	Fannie  Mae			Freddie Mac			Ginnie  Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	17,591		$	5,673		$	25		$	6		$	—		$	—		$	23,295
Unamortized discount	(10		)	(2		)	—			—			—			—			(12		)
Unamortized premium	912			343			—			—			—			—			1,255
Amortized cost	18,493			6,014			25			6			—			—			24,538
Gross unrealized gains	4			2			1			—			—			—			7
Gross unrealized losses	(686		)	(264		)	—			—			—			—			(950		)
Total available-for-sale securities, at fair value	17,811			5,752			26			6			—			—			23,595
Securities remeasured at fair value through earnings:
Par value	39,453			18,428			—			268			281			968			59,398
Unamortized discount	(78		)	(9		)	—			(10		)	(6		)	—			(103		)
Unamortized premium	1,055			638			—			—			5			38			1,736
Amortized cost	40,430			19,057			—			258			280			1,006			61,031
Gross unrealized gains	223			57			—			2			3			18			303
Gross unrealized losses	(386		)	(243		)	—			—			(1		)	(12		)	(642		)
Total securities remeasured at fair value through earnings	40,267			18,871			—			260			282			1,012			60,692
Total securities, at fair value	$	58,078		$	24,623		$	26		$	266		$	282		$	1,012		$	84,287
Weighted average coupon as of December 31, 2018	3.82		%	3.87		%	3.37		%	3.83		%	4.58		%	5.86		%	3.86		%
Weighted average yield as of December 31, 2018 1	3.28		%	3.28		%	2.04		%	4.22		%	4.68		%	5.16		%	3.31		%

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1. Incorporates a weighted average future constant prepayment rate assumption of 7.9% based on forward rates as of December 31, 2018.

As of March 31, 2019 and December 31, 2018, our investments in CRT and non-Agency securities had the following credit ratings:

	March 31, 2019						December 31, 2018
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS		CMBS		CRT		RMBS		CMBS
AAA	$	—	$	156	$	62	$	—	$	160	$	52
AA	—		42		190		—		17		152
A	17		45		33		17		33		15
BBB	54		63		58		25		43		53
BB	412		8		10		492		8		10
B	600		2		—		453		2		—
Not Rated	46		3		—		25		3		—
Total	$	1,129	$	319	$	353	$	1,012	$	266	$	282

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1. Represents the lowest of Standard and Poor's ("S&P"), Moody's, Fitch, DBRS, Kroll Bond Rating Agency ("KBRA") and Morningstar credit ratings, stated in terms of the S&P equivalent rating as of each date.

Our CRT securities reference the performance of loans underlying Agency RMBS issued by Fannie Mae or Freddie Mac, which were subject to their underwriting standards. As of March 31, 2019, our CRT securities had floating and fixed rate coupons ranging from 3.0% to 8.8%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from 3.7% to 4.9%. As of December 31, 2018, our CRT securities had floating rate coupons ranging from 3.9% to 9.5%, referenced to loans originated between 2011 and 2018 with weighted average coupons ranging from 3.8% to 4.8%.

The actual maturities of our investment securities are generally shorter than their stated contractual maturities. The actual maturities of our Agency and high credit quality non-Agency RMBS are primarily affected by principal prepayments and to a lesser degree the contractual lives of the underlying mortgages and periodic contractual principal repayments. The actual maturities of our credit-oriented investments are primarily impacted by their contractual lives and default and loss recovery rates. As of March 31, 2019 and December 31, 2018, the weighted average expected constant prepayment rate ("CPR") over the remaining life of our Agency and high credit quality non-Agency RMBS investment portfolio was 10.5% and 7.9%, respectively. Our estimates can differ materially for different securities and thus our individual holdings have a wide range of projected CPRs. The following table summarizes our investments as of March 31, 2019 and December 31, 2018 according to their estimated weighted average life classification (dollars in millions):

	March 31, 2019						December 31, 2018
Estimated Weighted Average Life of Investment Securities	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield
≥ 1 year and ≤ 3 years	$	2,452	$	2,461	3.94%	2.83%	$	1,690	$	1,716	3.99%	2.64%
> 3 years and ≤ 5 years	18,438		18,225		3.85%	3.35%	5,518		5,586		3.35%	2.73%
> 5 years and ≤10 years	74,329		74,354		3.89%	3.29%	72,503		73,588		3.92%	3.37%
> 10 years	51		50		3.78%	4.12%	4,576		4,679		3.57%	3.30%
Total	$	95,270	$	95,090	3.88%	3.29%	$	84,287	$	85,569	3.86%	3.31%

The following table presents the gross unrealized loss and fair values of securities classified as available-for-sale by length of time that such securities have been in a continuous unrealized loss position as of March 31, 2019 and December 31, 2018 (in millions):

	Unrealized Loss Position For
	Less than 12 Months					12 Months or More					Total
Securities Classified as Available-for-Sale	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
March 31, 2019	$	108	$	(1	)	$	20,119	$	(567	)	$	20,227	$	(568	)
December 31, 2018	$	4,783	$	(72	)	$	18,231	$	(878	)	$	23,014	$	(950	)

We did not recognize OTTI charges on our investment securities during the periods presented on our consolidated statements of operations. As of the end of each respective reporting period, a decision had not been made to sell securities in an unrealized loss position and we did not believe it was more likely than not that we would be required to sell such securities before recovery of their amortized cost basis. The unrealized losses on our securities were not due to credit losses given the GSE or U.S. Government

agency guarantees, but rather were due to changes in interest rates and prepayment expectations. However, as we continue to actively manage our portfolio, we may recognize additional realized losses on our investment securities upon selecting specific securities to sell.

Gains and Losses on Sale of Investment Securities

The following table is a summary of our net gain (loss) from the sale of investment securities for the three months ended March 31, 2019 and 2018 by investment classification of accounting (in millions):

	Three Months Ended March 31,
	2019									2018
Investment Securities	Available-for-Sale Securities 2			Fair Value Option Securities			Total			Available-for-Sale Securities 2			Fair Value Option Securities			Total
Investment securities sold, at cost	$	(339	)	$	(4,562	)	$	(4,901	)	$	(387	)	$	(1,003	)	$	(1,390	)
Proceeds from investment securities sold 1	335			4,626			4,961			388			1,000			1,388
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)
Gross gain on sale of investment securities	$	—		$	66		$	66		$	3		$	7		$	10
Gross loss on sale of investment securities	(4		)	(2		)	(6		)	(2		)	(10		)	(12		)
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)

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1. Proceeds include cash received during the period, plus receivable for investment securities sold during the period as of period end.

2. See Note 10 for a summary of changes in accumulated OCI.  

Consolidated Variable Interest Entities

As of March 31, 2019 and December 31, 2018, our consolidated financial statements reflect the consolidation of certain variable interest entities ("VIEs") for which we have determined we are the primary beneficiary. The consolidated VIEs consist of CMO trusts backed by fixed or adjustable-rate Agency RMBS. Fannie Mae or Freddie Mac guarantees the payment of interest and principal and acts as the trustee and administrator of their respective securitization trusts. Accordingly, we are not required to provide the beneficial interest holders of the CMO securities any financial or other support. Our maximum exposure to loss related to our involvement with the CMO trusts is the fair value of the CMO securities and interest and principal-only securities held by us, less principal amounts guaranteed by Fannie Mae and Freddie Mac.

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Repurchase Agreements And Reverse Repurchase Agreements

3 Months Ended

Mar. 31, 2019

Disclosure of Repurchase Agreements [Abstract]

Repurchase Agreements And Other Debt

Repurchase Agreements and Other Debt

Repurchase Agreements

We pledge our securities as collateral under our borrowings structured as repurchase agreements with financial institutions. Interest rates on our borrowings are generally based on LIBOR plus or minus a margin and amounts available to be borrowed are dependent upon the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, type of security and liquidity conditions within the banking, mortgage finance and real estate industries. If the fair value of our pledged securities declines, lenders will typically require us to post additional collateral or pay down borrowings to re-establish agreed upon collateral requirements, referred to as "margin calls." Similarly, if the fair value of our pledged securities increases, lenders may release collateral back to us. As of March 31, 2019, we had met all margin call requirements. For additional information regarding our pledged assets, please refer to Note 7.

As of March 31, 2019 and December 31, 2018, we had $86.7 billion and $75.7 billion, respectively, of repurchase agreements outstanding used to fund our investment portfolio and temporary holdings of U.S. Treasury securities. The terms and conditions of our repurchase agreements are typically negotiated on a transaction-by-transaction basis. Our repurchase agreements with original maturities greater than one year have floating interest rates based on an index plus or minus a fixed spread. The following table summarizes our borrowings under repurchase agreements by their remaining maturities as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019					December 31, 2018
Remaining Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity
Agency repo:
≤ 1 month	$	44,624	2.94	%	8	$	48,533	2.88	%	9
> 1 to ≤ 3 months	26,690		2.66	%	65	20,991		2.57	%	56
> 3 to ≤ 6 months	2,181		2.67	%	125	2,218		2.65	%	167
> 6 to ≤ 9 months	2,450		2.68	%	204	200		3.19	%	208
> 9 to ≤ 12 months	7,554		2.75	%	288	950		2.80	%	279
> 12 to ≤ 24 months	1,825		2.97	%	516	2,200		2.91	%	438
> 24 to ≤ 36 months	1,000		2.67	%	1,044	625		3.11	%	776
Total Agency repo	86,324		2.82	%	81	75,717		2.79	%	49
U.S. Treasury repo:
> 1 day to ≤ 1 month	361		2.91	%	1	—		—	%	—
Total	$	86,685	2.82	%	81	$	75,717	2.79	%	49

As of March 31, 2019 and December 31, 2018, $18.7 billion and $19.5 billion, respectively, of our repurchase agreements had a remaining maturity of one business day and none of our repurchase agreements were due on demand. As of March 31, 2019, we had $10.7 billion of forward commitments to enter into repurchase agreements, with a weighted average forward start date of 85 days and a weighted average interest rate of 2.55%. As of December 31, 2018 we had $10.7 billion of forward commitments to enter into repurchase agreements, with a weighted average forward start date of 9 days and a weighted average interest rate of 2.90%. As of March 31, 2019 and December 31, 2018, 41% and 35%, respectively, of our repurchase agreement funding was sourced through our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC ("BES"). Amounts sourced through BES include funding from the General Collateral Finance Repo service ("GCF Repo") offered by the Fixed Income Clearing Corporation ("FICC"), which totaled 40% and 33% of our repurchase agreement funding outstanding as of March 31, 2019 and December 31, 2018, respectively.

Reverse Repurchase Agreements

As of March 31, 2019 and December 31, 2018, we had $20.4 billion and $21.8 billion, respectively, of reverse repurchase agreements outstanding used primarily to borrow securities to cover short sales of U.S. Treasury securities, for which we had associated obligations to return borrowed securities at fair value of $19.3 billion and $21.4 billion, respectively. As of March 31, 2019 and December 31, 2018, $5.6 billion and $4.5 billion, respectively, of our reverse repurchase agreements were with the FICC sourced through BES.

Other Debt

As of March 31, 2019 and December 31, 2018, we had debt of consolidated VIEs, at fair value, of $266 million and $275 million, respectively, which had a weighted average interest rate of LIBOR plus 41 and 40 basis points, respectively, and an estimated weighted average life of 5.9 years and 6.1 years, respectively.

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Derivative and Other Hedging Instruments

3 Months Ended

Mar. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

US Government Futures Securities [Table Text Block]

U.S. Treasury Futures	March 31, 2019												December 31, 2018
Maturity	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
10 years	$	(1,650	)	$	(2,019	)	$	(2,050	)	$	(31	)	$	(1,650	)	$	(1,969	)	$	(2,013	)	$	(44	)

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1.

Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying U.S. Treasury security) of the U.S. Treasury futures contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Derivative and Other Hedging Instruments

Derivative and Other Hedging Instruments

We hedge a portion of our interest rate risk primarily utilizing interest rate swaps, interest rate swaptions, U.S. Treasury securities and U.S. Treasury futures contracts. We utilize TBA securities primarily as a means of investing in the Agency securities market. For additional information regarding our derivative instruments and our overall risk management strategy, please refer to the discussion of derivative and other hedging instruments in Note 3.

Derivative and Other Hedging Instrument Assets (Liabilities), at Fair Value

The table below summarizes fair value information about our derivative and other hedging instrument assets/(liabilities) as of March 31, 2019 and December 31, 2018 (in millions):

Derivative and Other Hedging Instruments	Balance Sheet Location	March 31, 2019			December 31, 2018
Interest rate swaps	Derivative assets, at fair value	$	151		$	126
Swaptions	Derivative assets, at fair value	11			37
TBA securities	Derivative assets, at fair value	91			110
Total derivative assets, at fair value		$	253		$	273
Interest rate swaps	Derivative liabilities, at fair value	$	(1	)	$	—
TBA securities	Derivative liabilities, at fair value	(21		)	(40		)
U.S. Treasury futures - short	Derivative liabilities, at fair value	(31		)	(44		)
Total derivative liabilities, at fair value		$	(53	)	$	(84	)
U.S. Treasury securities - long	U.S. Treasury securities, at fair value	$	121		$	46
U.S. Treasury securities - short	Obligation to return securities borrowed under reverse repurchase agreements, at fair value	(19,275		)	(21,431		)
Total U.S. Treasury securities, net at fair value		$	(19,154	)	$	(21,385	)

The following tables summarize certain characteristics of our derivative and other hedging instruments outstanding as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019					December 31, 2018
Interest Rate Swaps	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)
≤ 3 years	$	20,900	1.71%	2.69%	1.2	$	19,900	1.63%	2.62%	1.3
> 3 to ≤ 5 years	9,425		2.11%	2.69%	3.7	8,425		2.06%	2.61%	4.0
> 5 to ≤ 7 years	6,225		2.38%	2.67%	5.8	7,875		2.66%	2.66%	6.1
> 7 to ≤ 10 years	9,700		2.30%	2.68%	8.6	10,550		2.36%	2.64%	8.8
> 10 years	1,925		2.30%	2.69%	13.2	4,875		2.77%	2.63%	11.6
Total	$	48,175	2.01%	2.69%	4.3	$	51,625	2.11%	2.63%	5.0

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1. As of March 31, 2019 and December 31, 2018, notional amount includes forward starting swaps of $4.0 billion and $5.7 billion, respectively, with an average forward start date of 0.2 and 0.5 years, respectively.

2. Average fixed pay rate includes forward starting swaps. Excluding forward starting swaps, the average fixed pay rate was 1.96% and 1.98% as of March 31, 2019 and December 31, 2018, respectively.

Swaptions	Option					Underlying Payer Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date 1	Notional Amount		Average Fixed Pay Rate	Average Receive Rate (LIBOR)	Average Term (Years)
March 31, 2019
≤ 1 year	$	71	$	5	4	$	2,050	2.98%	3M	7.0
> 1 year ≤ 2 years	18		6		15	500		2.78%	3M	10.0
Total	$	89	$	11	7	$	2,550	2.94%	3M	7.6
December 31, 2018
≤ 1 year	$	80	$	23	4	$	3,000	2.96%	3M	7.0
> 1 year ≤ 2 years	18		14		18	500		2.78%	3M	10.0
Total	$	98	$	37	6	$	3,500	2.93%	3M	7.4

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1. As of March 31, 2019 and December 31, 2018, ≤ 1 year notional amount includes $700 million of Bermudan swaptions where the options may be exercised on predetermined dates up to their final exercise date, which is six months prior to the underlying swaps' maturity date.

U.S. Treasury Securities	March 31, 2019									December 31, 2018
Maturity	Face Amount (Short)			Cost Basis 1			Fair Value			Face Amount (Short)			Cost Basis 1			Fair Value
5 years	$	120		$	120		$	121		$	(703	)	$	(706	)	$	(713	)
7 years	(12,990		)	(12,976		)	(13,285		)	(14,357		)	(14,325		)	(14,410		)
10 years	(5,745		)	(5,810		)	(5,990		)	(6,240		)	(6,224		)	(6,262		)
Total U.S. Treasury securities	$	(18,615	)	$	(18,666	)	$	(19,154	)	$	(21,300	)	$	(21,255	)	$	(21,385	)

________________________________

1. As of March 31, 2019 and December 31, 2018, U.S. Treasury securities had a weighted average yield of 2.66%.

U.S. Treasury Futures	March 31, 2019												December 31, 2018
Maturity	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
10 years	$	(1,650	)	$	(2,019	)	$	(2,050	)	$	(31	)	$	(1,650	)	$	(1,969	)	$	(2,013	)	$	(44	)

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1. Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying U.S. Treasury security) of the U.S. Treasury futures contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

	March 31, 2019												December 31, 2018
TBA Securities by Coupon	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
15-Year TBA securities:
3.0%	$	327		$	328		$	329		$	1		$	567		$	557		$	566		$	9
3.5%	1,969			1,996			2,013			17			1,706			1,708			1,726			18
4.0%	1,083			1,108			1,115			7			1,350			1,370			1,381			11
Total 15-Year TBA securities	3,379			3,432			3,457			25			3,623			3,635			3,673			38
30-Year TBA securities:
3.0%	903			886			899			13			1,028			981			1,003			22
3.5%	3,084			3,095			3,125			30			(2,979		)	(2,943		)	(2,977		)	(34		)
4.0%	(3,148		)	(3,222		)	(3,238		)	(16		)	3,030			3,073			3,089			16
≥ 4.5%	2,604			2,694			2,712			18			2,450			2,506			2,534			28
Total 30-Year TBA securities, net	3,443			3,453			3,498			45			3,529			3,617			3,649			32
Total TBA securities, net	$	6,822		$	6,885		$	6,955		$	70		$	7,152		$	7,252		$	7,322		$	70

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1. Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying Agency security) of the TBA contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Gain (Loss) From Derivative Instruments and Other Securities, Net

The following table summarizes changes in our derivative and other hedge portfolio and their effect on our consolidated statements of comprehensive income for the three months ended March 31, 2019 and 2018 (in millions):

Derivative and Other Hedging Instruments	Beginning Notional Amount			Additions		Settlement, Termination, Expiration or Exercise		Ending Notional Amount			Gain/(Loss) on Derivative Instruments and Other Securities, Net 1
Three months ended March 31, 2019:
TBA securities, net	$	7,152		18,442		(18,772	)	$	6,822		$	83
Interest rate swaps	$	51,625		5,350		(8,800	)	$	48,175		(596		)
Payer swaptions	$	3,500		—		(950	)	$	2,550		(27		)
U.S. Treasury securities - short position	$	(21,345	)	(4,770	)	7,380		$	(18,735	)	(425		)
U.S. Treasury securities - long position	$	45		405		(330	)	$	120		—
U.S. Treasury futures contracts - short position	$	(1,650	)	(1,650	)	1,650		$	(1,650	)	(31		)
											$	(996	)
Three months ended March 31, 2018:
TBA securities, net	$	15,474		43,669		(45,507	)	$	13,636		$	(292	)
Interest rate swaps	$	43,700		3,150		(1,600	)	$	45,250		663
Payer swaptions	$	6,650		1,100		(1,000	)	$	6,750		91
U.S. Treasury securities - short position	$	(10,699	)	(662	)	563		$	(10,798	)	212
U.S. Treasury securities - long position	$	—		959		(734	)	$	225		—
U.S. Treasury futures contracts - short position	$	(2,910	)	(2,909	)	3,439		$	(2,380	)	62
											$	736

________________________________

1.

Amounts exclude other miscellaneous gains and losses recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

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Pledged Assets

3 Months Ended

Mar. 31, 2019

Pledged Assets [Abstract]

Pledged Assets

Pledged Assets

Our funding agreements require us to fully collateralize our obligations under the agreements based upon our counterparties' collateral requirements and their determination of the fair value of the securities pledged as collateral, which fluctuates with changes in interest rates, credit quality and liquidity conditions within the investment banking, mortgage finance and real estate industries. Our derivative contracts similarly require us to fully collateralize our obligations under such agreements, which will vary over time based on similar factors as well as our counterparties' determination of the value of the derivative contract. We are typically required to post initial margin upon execution of derivative transactions, such as under our interest rate swap agreements and TBA contracts, and subsequently post or receive variation margin based on daily fluctuations in fair value. Our prime brokerage agreements, pursuant to which we receive custody and settlement services, and the clearing organizations utilized by our wholly-owned captive broker-dealer subsidiary, Bethesda Securities, LLC, also require that we post minimum daily clearing deposits. If we breach our collateral requirements, we will be required to fully settle our obligations under the agreements, which could include a forced liquidation of our pledged collateral.

Our counterparties also apply a "haircut" to our pledged collateral, which means our collateral is valued at slightly less than market value and limits the amount we can borrow against our securities. This haircut reflects the underlying risk of the specific collateral and protects our counterparty against a change in its value. Our agreements do not specify the haircut; rather haircuts are determined on an individual transaction basis. Consequently, our funding agreements and derivative contracts expose us to credit risk relating to potential losses that could be recognized if our counterparties fail to perform their obligations under such agreements. We minimize this risk by limiting our counterparties to major financial institutions with acceptable credit ratings or to registered clearinghouses and U.S. government agencies, and we monitor our positions with individual counterparties. In the event of a default by a counterparty, we may have difficulty obtaining our assets pledged as collateral to such counterparty and may not receive payments provided for under the terms of our derivative agreements. In the case of centrally cleared instruments, we could be exposed to credit risk if the central clearing agency or a clearing member defaults on its respective obligation to perform under the contract. However, we believe that the risk is minimal due to the clearing exchanges' initial and daily mark-to-market margin requirements, clearinghouse guarantee funds and other resources that are available in the event of a clearing

member default. As of March 31, 2019, our maximum amount at risk with any counterparty other than the Fixed Income Clearing Corporation related to our repurchase agreements was less than 4% of our tangible stockholders' equity. As of March 31, 2019, approximately 7% of our tangible stockholder's equity was at risk with the Fixed Income Clearing Corporation. Equity at risk is defined as the net carrying value of securities pledged under repurchase agreements, including accrued interest plus any cash or assets on deposit to secure the repurchase obligation, less the amount of the repurchase liability, including accrued interest.

Our International Swaps and Derivatives Association ("ISDA") Master Agreements contain a cross default provision under which a default under the terms of certain of our other indebtedness in excess of certain thresholds causes an event of default under the ISDA Master Agreement. Threshold amounts vary by lender. Following an event of default, we could be required to settle our obligations under the agreements. Additionally, under certain of our ISDA Master Agreements, we could be required to settle our obligations under the agreements if we fail to maintain certain minimum stockholders' equity thresholds or our REIT status or if we fail to comply with limits on our leverage up to certain specified levels. As of March 31, 2019, the fair value of additional collateral that could be required to be posted as a result of the credit-risk-related contingent features being triggered was not material to our financial statements.

Assets Pledged to Counterparties

The following tables summarize our assets pledged as collateral under our funding, derivative and prime broker agreements by type, including securities pledged related to securities sold but not yet settled, as of March 31, 2019 and December 31, 2018 (in millions):

	March 31, 2019
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	89,779	$	425	$	174	$	118	$	90,496
CRT - fair value	142		—		—		—		142
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	617		—		—		—		617
Accrued interest on pledged securities	278		1		1		—		280
Restricted cash and cash equivalents	75		—		442		—		517
Total	$	90,936	$	426	$	617	$	118	$	92,097

	December 31, 2018
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	78,997	$	436	$	174	$	133	$	79,740
CRT - fair value	141		—		—		—		141
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	437		—		—		—		437
Accrued interest on pledged securities	246		1		1		—		248
Restricted cash and cash equivalents	77		—		522		—		599
Total	$	79,943	$	437	$	697	$	133	$	81,210

________________________________

1. Includes repledged assets received as collateral from counterparties.

2. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

3. Includes margin for TBAs cleared through prime brokers and other clearing deposits.

Securities transferred to our consolidated VIEs can only be used to settle the obligations of each respective VIE. However, we may pledge our retained interests in our consolidated VIEs as collateral under our repurchase agreements and derivative contracts. Please refer to Note 4 for additional information regarding our consolidated VIEs.

The following table summarizes our securities pledged as collateral under our repurchase agreements by the remaining maturity of our borrowings, including securities pledged related to sold but not yet settled securities, as of March 31, 2019 and December 31, 2018 (in millions). For the corresponding borrowings associated with the following amounts and the interest rates thereon, refer to Note 5.

	March 31, 2019						December 31, 2018
Securities Pledged by Remaining Maturity of Repurchase Agreements 1,2	Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities		Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities
≤ 30 days	$	45,947	$	45,673	$	143	$	49,944	$	50,654	$	156
> 30 and ≤ 60 days	10,792		10,758		34		14,586		14,810		46
> 60 and ≤ 90 days	17,282		17,267		53		7,770		7,843		24
> 90 days	15,945		16,108		48		6,882		7,079		21
Total	$	89,966	$	89,806	$	278	$	79,182	$	80,386	$	247

________________________________

1. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

2. Excludes $496 million and $437 million of repledged U.S. Treasury securities received as collateral from counterparties as of March 31, 2019 and December 31, 2018, repsectively.

Assets Pledged from Counterparties

As of March 31, 2019 and December 31, 2018, we had assets pledged to us from counterparties as collateral under our reverse repurchase and derivative agreements summarized in the tables below (in millions).

	March 31, 2019								December 31, 2018
Assets Pledged to AGNC 1	Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total		Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total
U.S. Treasury securities - fair value	$	20,400	$	10	$	30	$	20,440	$	21,876	$	35	$	37	$	21,948
Cash	—		49		—		49		—		129		—		129
Total	$	20,400	$	59	$	30	$	20,489	$	21,876	$	164	$	37	$	22,077

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1. Includes $496 million and $437 million of repledged U.S. Treasury securities received as collateral from counterparties as of March 31, 2019 and December 31, 2018, respectively.

U.S Treasury securities received as collateral under our reverse repurchase agreements for which we use to cover short sales of U.S. Treasury securities are accounted for as securities borrowing transactions. We recognize a corresponding obligation to return the borrowed securities at fair value on the accompanying consolidated balance sheets based on the value of the underlying borrowed securities as of the reporting date.

Cash collateral received is recognized in cash and cash equivalents with a corresponding amount recognized in accounts payable and other accrued liabilities on the accompanying consolidated balance sheets.

Offsetting Assets and Liabilities

Certain of our repurchase agreements and derivative transactions are governed by underlying agreements that generally provide for a right of setoff under master netting arrangements (or similar agreements), including in the event of default or in the event of bankruptcy of either party to the transactions. We present our assets and liabilities subject to such arrangements on a gross basis in our consolidated balance sheets. The following tables present information about our assets and liabilities that are subject to master netting arrangements and can potentially be offset on our consolidated balance sheets as of March 31, 2019 and December 31, 2018 (in millions):

	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Received 2
March 31, 2019
Interest rate swap and swaption agreements, at fair value 1	$	162	$	—	$	162	$	(1	)	$	(59	)	$	102
TBA securities, at fair value	91		—		91		(21		)	—			70
Receivable under reverse repurchase agreements	20,430		—		20,430		(17,353		)	(3,072		)	5
Total	$	20,683	$	—	$	20,683	$	(17,375	)	$	(3,131	)	$	177
December 31, 2018
Interest rate swap and swaption agreements, at fair value 1	$	163	$	—	$	163	$	—		$	(158	)	$	5
TBA securities, at fair value	110		—		110		(40		)	—			70
Receivable under reverse repurchase agreements	21,813		—		21,813		(17,236		)	(4,575		)	2
Total	$	22,086	$	—	$	22,086	$	(17,276	)	$	(4,733	)	$	77

	Offsetting of Financial and Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Pledged 2
March 31, 2019
Interest rate swap agreements, at fair value 1	$	1	$	—	$	1	$	(1	)	$	—		$	—
TBA securities, at fair value	21		—		21		(21		)	—			—
Repurchase agreements	86,685		—		86,685		(17,353		)	(69,332		)	—
Total	$	86,707	$	—	$	86,707	$	(17,375	)	$	(69,332	)	$	—
December 31, 2018
Interest rate swap agreements, at fair value 1	$	—	$	—	$	—	$	—		$	—		$	—
TBA securities, at fair value	40		—		40		(40		)	—			—
Repurchase agreements	75,717		—		75,717		(17,236		)	(58,481		)	—
Total	$	75,757	$	—	$	75,757	$	(17,276	)	$	(58,481	)	$	—

________________________________

1. Reported under derivative assets / liabilities, at fair value in the accompanying consolidated balance sheets. Refer to Note 6 for a reconciliation of derivative assets / liabilities, at fair value to their sub-components.

2.

Includes cash and securities pledged / received as collateral, at fair value. Amounts include repledged collateral. Amounts presented are limited to collateral pledged sufficient to reduce the net amount to zero for individual counterparties, as applicable.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Fair Value Measurements

We determine the fair value of our financial instruments based on our estimate of the price that would be received to sell the asset or paid to transfer the liability in an orderly transaction between market participants at the measurement date. We typically obtain price estimates from multiple third-party pricing services and dealers or, if applicable, the clearing exchange (see Note 3 for further details.) We utilize a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. A financial instrument's categorization within the hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

The three levels of valuation hierarchy are defined as follows:

• Level 1 Inputs —Quoted prices (unadjusted) for identical unrestricted assets and liabilities in active markets that are accessible at the measurement date.

• Level 2 Inputs —Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

• Level 3 Inputs —Instruments with primarily unobservable market data that cannot be corroborated.

The availability of observable inputs can vary by instrument and is affected by a wide variety of factors, including the type of instrument, whether the instrument is new and not yet established in the marketplace and other characteristics particular to the instrument.  Third-party pricing sources may also use certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities, especially when estimating fair values for securities with lower levels of recent trading activity.

We make inquiries of third-party pricing sources to understand the significant inputs and assumptions they used to determine their prices. We also review third-party price estimates and perform procedures to validate their reasonableness, including an analysis of the range of estimates for each position, comparison to recent trade activity for similar securities, and for consistency with market conditions observed as of the measurement date. While we do not adjust prices we obtain from pricing sources, we will exclude prices for securities from our estimation of fair value if we determine (based on our validation procedures and our market knowledge and expertise) that the price is significantly different from what observable market data would indicate and we cannot obtain an understanding from the third-party source as to the significant inputs used to determine the price.  

The validation procedures described above also influence our determination of the appropriate fair value measurement categorization. The following table provides a summary of our assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 based on their categorization within the valuation hierarchy (in millions). There were no transfers between valuation hierarchy levels during the periods presented.

	March 31, 2019						December 31, 2018
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Agency securities	$	—	$	93,044	$	—	$	—	$	82,291	$	—
Agency securities transferred to consolidated VIEs	—		425		—		—		436		—
Credit risk transfer securities	—		1,129		—		—		1,012		—
Non-Agency securities	—		672		—		—		548		—
U.S. Treasury securities	121		—		—		46		—		—
Interest rate swaps	—		151		—		—		126		—
Swaptions	—		11		—		—		37		—
TBA securities	—		91		—		—		110		—
Total	$	121	$	95,523	$	—	$	46	$	84,560	$	—
Liabilities:
Debt of consolidated VIEs	$	—	$	266	$	—	$	—	$	275	$	—
Obligation to return U.S. Treasury securities borrowed under reverse repurchase agreements	19,275		—		—		21,431		—		—
Interest rate swaps	—		1		—		—		—		—
TBA securities	—		21		—		—		40		—
U.S. Treasury futures	31		—		—		44		—		—
Total	$	19,306	$	288	$	—	$	21,475	$	315	$	—

Excluded from the table above are financial instruments, including cash and cash equivalents, restricted cash and cash equivalents, receivables, payables and borrowings under repurchase agreements, which are presented in our consolidated financial statements at cost. The cost basis of these instruments is determined to approximate fair value due to their short duration or, in the case of longer-term repo, due to floating rates of interest based on an index plus or minus a fixed spread which is consistent with fixed spreads demanded in the market. We estimate the fair value of these instruments using "Level 1" or "Level 2" inputs.

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Net Income (Loss) Per Common Share (Notes)

3 Months Ended

Mar. 31, 2019

Net Income (Loss) Per Common Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended March 31,
	2019		2018
Weighted average number of common shares issued and outstanding	536.3		391.3
Weighted average number of fully vested restricted stock units and performance share units outstanding	0.4		—
Weighted average number of common shares outstanding - basic	536.7		391.3
Weighted average number of dilutive unvested restricted stock units and performance share units outstanding	0.5		0.2
Weighted average number of common shares outstanding - diluted	537.2		391.5
Net income available to common stockholders	$	255	$	415
Net income per common share - basic	$	0.48	$	1.06
Net income per common share - diluted	$	0.47	$	1.06

Earnings Per Share [Text Block]

Net Income Per Common Share

Basic net income per common share is computed by dividing net income applicable to common stock by the weighted-average number of common shares outstanding and the weighted-average number of vested but not yet issued restricted stock units and performance share units outstanding for the respective period. Diluted earnings per common share includes the impact of dilutive potential common shares outstanding during the period using the treasury stock method. Dilutive potential common shares outstanding include unvested restricted stock units and performance share units granted under our long-term incentive program to employees and non-employee Board of Directors. The following table presents the computations of basic and diluted net income per common share for the periods indicated (shares and dollars in millions):

	Three Months Ended March 31,
	2019		2018
Weighted average number of common shares issued and outstanding	536.3		391.3
Weighted average number of fully vested restricted stock units and performance share units outstanding	0.4		—
Weighted average number of common shares outstanding - basic	536.7		391.3
Weighted average number of dilutive unvested restricted stock units and performance share units outstanding	0.5		0.2
Weighted average number of common shares outstanding - diluted	537.2		391.5
Net income available to common stockholders	$	255	$	415
Net income per common share - basic	$	0.48	$	1.06
Net income per common share - diluted	$	0.47	$	1.06

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Stockholders' Equity

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Stockholders' Equity

Stockholders' Equity  

Preferred Stock

We are authorized to designate and issue up to 10.0 million shares of preferred stock in one or more classes or series. As of March 31, 2019 and December 31, 2018, 8,050 shares were designated as 7.750% Series B Cumulative Redeemable Preferred Stock ("Series B Preferred Stock") and 13,800 shares were designated as 7.00% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock ("Series C Preferred Stock"). During March 2019, we designated an additional 9,400 shares as 6.875% Series D Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock ("Series D Preferred Stock"). Each share of Series B, C, and D Preferred Stock is represented by 1,000 depositary shares.

Our preferred stock ranks senior to our common stock with respect to the payment of dividends and the distribution of assets upon a voluntary or involuntary liquidation, dissolution or winding up of the Company. Our preferred stock has no stated maturity, is not subject to any sinking fund or mandatory redemption and ranks on parity with each other. Under certain circumstances upon a change of control, our preferred stock is convertible to shares of our common stock. Holders of our preferred stock and depository shares underlying our preferred stock have no voting rights, except under limited conditions. Beginning on each series' optional redemption date, such shares will be redeemable at $25.00 per depositary share, plus accumulated and unpaid dividends (whether or not declared), exclusively at our option.

The following is a summary of our preferred stock issued and outstanding as of March 31, 2019 (dollars and shares in millions):

Preferred Stock	Issuance Date	Depository Shares Issued and Outstanding	Carrying Value		Aggregate Liquidation Preference		Fixed Rate	Optional Redemption Date 2	Fixed-to-Floating Rate Conversion Date	Floating Annual Rate
Fixed Rate
Series B	May 8, 2014	7.0	$	169	$	175	7.750%	May 8, 2019	N/A	N/A
Fixed-to-Floating Rate 1
Series C	August 22, 2017	13.0	315		325		7.000%	October 15, 2022	October 15, 2022	3M LIBOR + 5.111%
Series D	March 6, 2019	9.4	227		235		6.875%	April 15, 2024	April 15, 2024	3M LIBOR + 4.332%
Total		29.4	$	711	$	735

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1. Fixed-to-floating rate redeemable preferred stock accrue dividends at a annual fixed rate of the $25.00 liquidation preference per depository share from the issuance date up to, but not including, the fixed-to-floating rate conversion date; thereafter, dividends will accrue on a floating rate basis equal to 3 month LIBOR plus a fixed spread.

2. Shares may be redeemed prior to our optional redemption date under certain circumstances intended to preserve our qualification as a REIT for U.S federal income tax purposes.

At-the-Market Offering Program

We are authorized by our Board of Directors to enter into agreements with sales agents to publicly offer and sell shares of our common stock in privately negotiated and/or at-the-market transactions from time-to-time up to a maximum aggregate offering price of our common stock through June 14, 2021. During the quarter ended March 31, 2019, we did not sell shares of our common stock under the sales agreements. As of March 31, 2019, shares of our common stock with an aggregate offering price of $660 million remained authorized for issuance under this program.

Accumulated Other Comprehensive Income (Loss)

The following table summarizes changes to accumulated OCI for the three months ended March 31, 2019 and 2018 (in millions):

	Three Months Ended March 31,
Accumulated Other Comprehensive Income (Loss)	2019			2018
Beginning Balance	$	(943	)	$	(345	)
OCI before reclassifications	396			(620		)
(Gain) loss amounts for available-for-sale securities reclassified from accumulated OCI to realized gain (loss) on sale of investment securities	4			(1		)
Ending Balance	$	(543	)	$	(966	)

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Subsequent Event

3 Months Ended

Mar. 31, 2019

Subsequent Events [Abstract]

Subsequent Event

Subsequent Events On April 10, 2019, our Board of Directors declared a monthly dividend of $0.18 per common share payable on May 9, 2019 to common stockholders of record as of April 30, 2019.

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Summary of Significant Accounting Policies (Policy)

3 Months Ended

Mar. 31, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Goodwill and Intangible Assets, Policy [Policy Text Block]

Reverse Repurchase Agreements Policy [Policy Text Block]

Reverse Repurchase Agreements and Obligation to Return Securities Borrowed under Reverse Repurchase AgreementsWe borrow securities to cover short sales of U.S. Treasury securities through reverse repurchase transactions under our master repurchase agreements (see Derivative Instruments below). We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on the balance sheet based on the value of the underlying borrowed securities as of the reporting date. Our reverse repurchase agreements typically have maturities of 30 days or less. The fair value of our reverse repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

We consider the applicability and impact of all Accounting Standards Updates ("ASUs") issued by the Financial Accounting Standards Board. ASUs not listed below were determined to be either not applicable, are not expected to have a significant impact on our consolidated financial statements when adopted or did not have a significant impact on our consolidated financial statements upon adoption.

ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): ASU 2016-13 changes the impairment model for most financial assets and certain other instruments. Allowances for credit losses on available-for-sale debt securities will be recognized, rather than direct reductions in the amortized cost of the investments. The new model also requires the estimation of lifetime expected credit losses and corresponding recognition of allowance for losses on trade and other receivables, held-to-maturity debt securities, loans, and other instruments held at amortized cost. The ASU requires certain recurring disclosures and is effective for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2019, with early adoption permitted for annual periods, and interim periods within those annual periods, beginning on or after December 15, 2018. ASU 2016-13 is not expected to have a significant impact on our consolidated financial statements.

Variable Interest Entity Disclosure [Text Block]

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Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

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Investment Securities

Investment Securities

Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae").

CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans.

Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, overcollateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS.

All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities acquired after fiscal year 2016. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"). Unrealized gains and losses on securities for which we elected the fair value option or are classified as trading are reported in net income through other gain (loss) during the period in which they occur. Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gains or losses to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period, as the fair value changes for these assets are presented in a manner consistent with the presentation and timing of the fair value changes of our derivative instruments.

We estimate the fair value of our investment securities based on prices provided by multiple third-party pricing services and non-binding dealer quotes (collectively "pricing sources"). These pricing sources use various valuation approaches, including market and income approaches, using "Level 2" inputs. The pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value of our Agency RMBS based on observed quoted prices for forward contracts in the Agency RMBS "to-be-announced" market ("TBA securities") of the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, which may include maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. The pricing sources may also utilize discounted cash flow model-derived pricing techniques to estimate the fair value of investment securities. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. We review the pricing estimates obtained from the pricing sources and perform procedures to validate their reasonableness. Refer to Note 8 for further discussion of fair value measurements.

We evaluate our investments designated as available-for-sale for other-than-temporary impairment ("OTTI") on at least a quarterly basis. The determination of whether a security is other-than-temporarily impaired may involve judgments and assumptions based on subjective and objective factors. When a security is impaired, an OTTI is considered to have occurred if any one of the following three conditions exists as of the financial reporting date: (i) we intend to sell the security (that is, a decision has been made to sell the security), (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis or (iii) we do not expect to recover the security's amortized cost basis, even if we do not intend to sell the security and it is not more likely than not that we will be required to sell the security. A general allowance for unidentified impairments in a portfolio of securities is not permitted.

Interest Income

Interest Income

Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs.

We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate the reasonableness of the third-party estimates. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previously estimated future prepayments and (ii) actual prepayments to date and our current estimated future prepayments. If the actual and estimated future prepayment experience differs from our prior estimate of prepayments, we are required to record an adjustment in the current period to the amortization or accretion of premiums and discounts for the cumulative difference in the effective yield through the reporting date.

At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.

Repurchase and Resale Agreements Policy [Policy Text Block]

Repurchase Agreements We finance the acquisition of securities for our investment portfolio primarily through repurchase transactions under master repurchase agreements. Pursuant to ASC Topic 860, Transfers and Servicing, we account for repurchase transactions as collateralized financing transactions, which are carried at their contractual amounts (cost), plus accrued interest. Our repurchase agreements typically have maturities of less than one year but may extend up to five years or more. Interest rates on our repurchase agreements generally correspond to one or three-month LIBOR plus or minus a fixed spread. The fair value of our repurchase agreements is assumed to equal cost as the interest rates are considered to be at market.

Derivative Instruments

Derivative Instruments

We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities as well as to periodically reduce our exposure to Agency RMBS.

We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Cash receipts and payments related to derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section.

The use of derivative instruments creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. Our derivative agreements require that we post or receive collateral to mitigate such risk. We also attempt to minimize our risk of loss by limiting our counterparties to registered central clearing exchanges and major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.

Interest rate swap agreements

We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate based

on one or three-month LIBOR ("payer swaps") with terms up to 20 years. The majority of our interest rate swaps are centrally cleared through a registered commodities exchange. We value centrally cleared interest rate swaps using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including LIBOR, swap rates and the forward yield curve. Our centrally cleared swaps require that we post an "initial margin" amount determined by the clearing exchange, which is generally intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability.

We value non-centrally cleared swaps using a combination of third-party valuations obtained from pricing services and the swap counterparty. The third-party valuations are model-driven using observable inputs, including LIBOR, swap rates and the forward yield curve. We also consider both our own and our counterparties' nonperformance risk in estimating the fair value of our interest rate swaps. In considering the effect of nonperformance risk, we assess the impact of netting and credit enhancements, such as collateral postings and guarantees, and have concluded that our own and our counterparty risk is not significant to the overall valuation of these agreements.

Interest rate swaptions

We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The premium paid for interest rate swaptions is reported as an asset in our consolidated balance sheets. We estimate the fair value of interest rate swaptions using a combination of inputs from counterparty and third-party pricing models based on the fair value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option, adjusted for non-performance risk, if any. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid.

TBA securities

A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing.

We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. We estimate the fair value of TBA securities based on similar methods used to value our Agency RMBS securities.

U.S. Treasury securities

We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We borrow U.S. Treasury securities under reverse repurchase agreements to cover short sales of U.S. Treasury securities. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Contingencies Disclosure [Text Block]

Loss Contingencies

We evaluate the existence of any pending or threatened litigation or other potential claims against the Company in accordance with ASC Topic 450, Contingencies, which requires that we assess the likelihood and range of potential outcomes of any such

matters. We are the defendant in three stockholder derivative lawsuits alleging that certain of our current and former directors and officers breached fiduciary duties and wasted corporate assets relating to past renewals of the management agreement with our former external manager and the internalization of our management on July 1, 2016. Although the outcomes of these cases cannot be predicted with certainty, we do not believe that these cases have merit or will result in a material liability, and, as of March 31, 2019, we did not accrue a loss contingency related to these matters.

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Summary of Significant Accounting Policies Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]

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Derivatives, Policy [Policy Text Block]

Derivative Instruments

We use a variety of derivative instruments to hedge a portion of our exposure to market risks, including interest rate, prepayment, extension and liquidity risks. The objective of our risk management strategy is to reduce fluctuations in net book value over a range of interest rate scenarios. In particular, we attempt to mitigate the risk of the cost of our variable rate liabilities increasing during a period of rising interest rates. The primary instruments that we use are interest rate swaps, options to enter into interest rate swaps ("swaptions"), U.S. Treasury securities and U.S. Treasury futures contracts. We also use forward contracts in the Agency RMBS "to-be-announced" market, or TBA securities, to invest in and finance Agency securities as well as to periodically reduce our exposure to Agency RMBS.

We account for derivative instruments in accordance with ASC Topic 815, Derivatives and Hedging ("ASC 815"). ASC 815 requires an entity to recognize all derivatives as either assets or liabilities in our accompanying consolidated balance sheets and to measure those instruments at fair value. None of our derivative instruments have been designated as hedging instruments for accounting purposes under the provisions of ASC 815, consequently changes in the fair value of our derivative instruments are reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Our derivative agreements generally contain provisions that allow for netting or setting off derivative assets and liabilities with the counterparty; however, we report related assets and liabilities on a gross basis in our consolidated balance sheets. Derivative instruments in a gain position are reported as derivative assets at fair value and derivative instruments in a loss position are reported as derivative liabilities at fair value in our consolidated balance sheets. Changes in fair value of derivative instruments and periodic settlements related to our derivative instruments are recorded in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. Cash receipts and payments related to derivative instruments are classified in our consolidated statements of cash flows according to the underlying nature or purpose of the derivative transaction, generally in the investing section.

The use of derivative instruments creates exposure to credit risk relating to potential losses that could be recognized if the counterparties to these instruments fail to perform their obligations under the contracts. Our derivative agreements require that we post or receive collateral to mitigate such risk. We also attempt to minimize our risk of loss by limiting our counterparties to registered central clearing exchanges and major financial institutions with acceptable credit ratings, monitoring positions with individual counterparties and adjusting posted collateral as required.

Interest rate swap agreements

We use interest rate swaps to economically hedge the variable cash flows associated with our borrowings made under repurchase agreements. Under our interest rate swap agreements, we typically pay a fixed rate and receive a floating rate based

on one or three-month LIBOR ("payer swaps") with terms up to 20 years. The majority of our interest rate swaps are centrally cleared through a registered commodities exchange. We value centrally cleared interest rate swaps using the daily settlement price, or fair value, determined by the clearing exchange based on a pricing model that references observable market inputs, including LIBOR, swap rates and the forward yield curve. Our centrally cleared swaps require that we post an "initial margin" amount determined by the clearing exchange, which is generally intended to be set at a level sufficient to protect the exchange from the interest rate swap's maximum estimated single-day price movement. We also exchange daily settlements of "variation margin" based upon changes in fair value, as measured by the exchange. Pursuant to rules governing central clearing activities, we recognize variation margin settlements as a direct reduction of the carrying value of the interest rate swap asset or liability.

We value non-centrally cleared swaps using a combination of third-party valuations obtained from pricing services and the swap counterparty. The third-party valuations are model-driven using observable inputs, including LIBOR, swap rates and the forward yield curve. We also consider both our own and our counterparties' nonperformance risk in estimating the fair value of our interest rate swaps. In considering the effect of nonperformance risk, we assess the impact of netting and credit enhancements, such as collateral postings and guarantees, and have concluded that our own and our counterparty risk is not significant to the overall valuation of these agreements.

Interest rate swaptions

We purchase interest rate swaptions to help mitigate the potential impact of larger, more rapid changes in interest rates on the performance of our investment portfolio. Interest rate swaptions provide us the option to enter into an interest rate swap agreement for a predetermined notional amount, stated term and pay and receive interest rates in the future. Our interest rate swaption agreements are not subject to central clearing. The premium paid for interest rate swaptions is reported as an asset in our consolidated balance sheets. We estimate the fair value of interest rate swaptions using a combination of inputs from counterparty and third-party pricing models based on the fair value of the future interest rate swap that we have the option to enter into as well as the remaining length of time that we have to exercise the option, adjusted for non-performance risk, if any. The difference between the premium paid and the fair value of the swaption is reported in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income. If a swaption expires unexercised, the realized loss on the swaption would be equal to the premium paid. If we sell or exercise a swaption, the realized gain or loss on the swaption would be equal to the difference between the cash or the fair value of the underlying interest rate swap and the premium paid.

TBA securities

A TBA security is a forward contract for the purchase or sale of Agency RMBS at a predetermined price, face amount, issuer, coupon and stated maturity on an agreed-upon future date. The specific Agency RMBS to be delivered into the contract are not known until shortly before the settlement date. We may choose, prior to settlement, to move the settlement of these securities out to a later date by entering into an offsetting TBA position, net settling the offsetting positions for cash, and simultaneously purchasing or selling a similar TBA contract for a later settlement date (together referred to as a "dollar roll transaction"). The Agency securities purchased or sold for a forward settlement date are typically priced at a discount to equivalent securities settling in the current month. This difference, or "price drop," is the economic equivalent of interest income on the underlying Agency securities, less an implied funding cost, over the forward settlement period (referred to as "dollar roll income"). Consequently, forward purchases of Agency securities and dollar roll transactions represent a form of off-balance sheet financing.

We account for TBA contracts as derivative instruments since either the TBA contracts do not settle in the shortest period of time possible or we cannot assert that it is probable at inception and throughout the term of the TBA contract that we will physically settle the contract on the settlement date. We account for TBA dollar roll transactions as a series of derivative transactions. We estimate the fair value of TBA securities based on similar methods used to value our Agency RMBS securities.

U.S. Treasury securities

We use U.S. Treasury securities and U.S. Treasury futures contracts to mitigate the potential impact of changes in interest rates on the performance of our portfolio. We borrow U.S. Treasury securities under reverse repurchase agreements to cover short sales of U.S. Treasury securities. We account for these as securities borrowing transactions and recognize an obligation to return the borrowed securities at fair value on our accompanying consolidated balance sheets based on the value of the underlying U.S. Treasury security as of the reporting date. Gains and losses associated with U.S. Treasury securities and U.S. Treasury futures contracts are recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Investment, Policy [Policy Text Block]

Investment Securities

Agency RMBS consist of residential mortgage pass-through securities and collateralized mortgage obligations ("CMOs") guaranteed by the Federal National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage Corporation ("Freddie Mac," and together with Fannie Mae, the "GSEs") or the Government National Mortgage Association ("Ginnie Mae").

CRT securities are risk sharing instruments issued by the GSEs, and similarly structured transactions issued by third-party market participants, that transfer a portion of the risk associated with credit losses within pools of conventional residential mortgage loans from the GSEs and/or third parties to private investors. Unlike Agency RMBS, full repayment of the original principal balance of CRT securities is not guaranteed by a GSE or U.S. Government agency; rather, "credit risk transfer" is achieved by writing down the outstanding principal balance of the CRT securities if credit losses on a related pool of loans exceed certain thresholds. By reducing the amount that they are obligated to repay to holders of CRT securities, the GSEs and/or other third parties offset credit losses on the related loans.

Non-Agency RMBS and CMBS (together, "Non-Agency MBS") are backed by residential and commercial mortgage loans, respectively, packaged and securitized by a private institution, such as a commercial bank. Non-Agency MBS typically benefit from credit enhancements derived from structural elements, such as subordination, overcollateralization or insurance, but nonetheless carry a higher level of credit exposure than Agency RMBS.

All of our securities are reported at fair value on our consolidated balance sheet. Accounting Standards Codification ("ASC") Topic 320, Investments—Debt and Equity Securities, requires that at the time of purchase, we designate a security as held-to-maturity, available-for-sale or trading, depending on our ability and intent to hold such security to maturity. Alternatively, we may elect the fair value option of accounting for securities pursuant to ASC Topic 825, Financial Instruments. Prior to fiscal year 2017, we primarily designated our investment securities as available-for-sale. On January 1, 2017, we began electing the fair value option of accounting for all investment securities acquired after fiscal year 2016. Unrealized gains and losses on securities classified as available-for-sale are reported in accumulated other comprehensive income ("OCI"). Unrealized gains and losses on securities for which we elected the fair value option or are classified as trading are reported in net income through other gain (loss) during the period in which they occur. Upon the sale of a security designated as available-for-sale, we determine the cost of the security and the amount of unrealized gains or losses to reclassify out of accumulated OCI into earnings based on the specific identification method. In our view, the election of the fair value option simplifies the accounting for investment securities and more appropriately reflects the results of our operations for a reporting period, as the fair value changes for these assets are presented in a manner consistent with the presentation and timing of the fair value changes of our derivative instruments.

We estimate the fair value of our investment securities based on prices provided by multiple third-party pricing services and non-binding dealer quotes (collectively "pricing sources"). These pricing sources use various valuation approaches, including market and income approaches, using "Level 2" inputs. The pricing sources primarily utilize a matrix pricing technique that interpolates the estimated fair value of our Agency RMBS based on observed quoted prices for forward contracts in the Agency RMBS "to-be-announced" market ("TBA securities") of the same coupon, maturity and issuer, adjusted to reflect the specific characteristics of the pool of mortgages underlying the Agency security, which may include maximum loan balance, loan vintage, loan-to-value ratio, geography and other characteristics as may be appropriate. The pricing sources may also utilize discounted cash flow model-derived pricing techniques to estimate the fair value of investment securities. Such models incorporate market-based discount rate assumptions based on observable inputs such as recent trading activity, credit data, volatility statistics, benchmark interest rate curves and other market data that are current as of the measurement date and may include certain unobservable inputs, such as assumptions of future levels of prepayment, defaults and loss severities. We review the pricing estimates obtained from the pricing sources and perform procedures to validate their reasonableness. Refer to Note 8 for further discussion of fair value measurements.

We evaluate our investments designated as available-for-sale for other-than-temporary impairment ("OTTI") on at least a quarterly basis. The determination of whether a security is other-than-temporarily impaired may involve judgments and assumptions based on subjective and objective factors. When a security is impaired, an OTTI is considered to have occurred if any one of the following three conditions exists as of the financial reporting date: (i) we intend to sell the security (that is, a decision has been made to sell the security), (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis or (iii) we do not expect to recover the security's amortized cost basis, even if we do not intend to sell the security and it is not more likely than not that we will be required to sell the security. A general allowance for unidentified impairments in a portfolio of securities is not permitted.

Interest Income [Policy Text Block]

Interest Income

Interest income is accrued based on the outstanding principal amount of the investment securities and their contractual terms. Premiums or discounts associated with the purchase of Agency RMBS and non-Agency MBS of high credit quality are amortized or accreted into interest income, respectively, over the projected lives of the securities, including contractual payments and estimated prepayments, using the effective interest method in accordance with ASC Subtopic 310-20, Receivables—Nonrefundable Fees and Other Costs.

We estimate long-term prepayment speeds of our mortgage securities using a third-party service and market data. The third-party service provider estimates prepayment speeds using models that incorporate the forward yield curve, current mortgage rates, mortgage rates of the outstanding loans, age and size of the outstanding loans, loan-to-value ratios, interest rate volatility and other factors. We review the prepayment speeds estimated by the third-party service and compare the results to market consensus prepayment speeds, if available. We also consider historical prepayment speeds and current market conditions to validate the reasonableness of the third-party estimates. We review our actual and anticipated prepayment experience on at least a quarterly basis and effective yields are recalculated when differences arise between (i) our previously estimated future prepayments and (ii) actual prepayments to date and our current estimated future prepayments. If the actual and estimated future prepayment experience differs from our prior estimate of prepayments, we are required to record an adjustment in the current period to the amortization or accretion of premiums and discounts for the cumulative difference in the effective yield through the reporting date.

At the time we purchase CRT securities and non-Agency MBS that are not of high credit quality, we determine an effective yield based on our estimate of the timing and amount of future cash flows and our cost basis. Our initial cash flow estimates for these investments are based on our observations of current information and events and include assumptions related to interest rates, prepayment rates and the impact of default and severity rates on the timing and amount of credit losses. On at least a quarterly basis, we review the estimated cash flows and make appropriate adjustments based on inputs and analysis received from external sources, internal models, and our judgment regarding such inputs and other factors. Any resulting changes in effective yield are recognized prospectively based on the current amortized cost of the investment adjusted for credit impairments, if any.

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Investment Securities (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Securities by Credit Rating [Table Text Block]

As of March 31, 2019 and December 31, 2018, our investments in CRT and non-Agency securities had the following credit ratings:

	March 31, 2019						December 31, 2018
CRT and Non-Agency Security Credit Ratings 1	CRT		RMBS		CMBS		CRT		RMBS		CMBS
AAA	$	—	$	156	$	62	$	—	$	160	$	52
AA	—		42		190		—		17		152
A	17		45		33		17		33		15
BBB	54		63		58		25		43		53
BB	412		8		10		492		8		10
B	600		2		—		453		2		—
Not Rated	46		3		—		25		3		—
Total	$	1,129	$	319	$	353	$	1,012	$	266	$	282

 ________________________________

1.

Represents the lowest of Standard and Poor's ("S&P"), Moody's, Fitch, DBRS, Kroll Bond Rating Agency ("KBRA") and Morningstar credit ratings, stated in terms of the S&P equivalent rating as of each date.

Available-for-sale Securities [Table Text Block]

	March 31, 2019
	Agency RMBS									Non-Agency
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	16,709		$	5,493		$	23		$	6		$	—		$	—		$	22,231
Unamortized discount	(11		)	(2		)	—			—			—			—			(13		)
Unamortized premium	849			325			—			—			—			—			1,174
Amortized cost	17,547			5,816			23			6			—			—			23,392
Gross unrealized gains	19			5			1			—			—			—			25
Gross unrealized losses	(402		)	(166		)	—			—			—			—			(568		)
Total available-for-sale securities, at fair value	17,164			5,655			24			6			—			—			22,849
Securities remeasured at fair value through earnings:
Par value	42,546			25,501			—			317			409			1,087			69,860
Unamortized discount	(74		)	(6		)	—			(11		)	(70		)	(13		)	(174		)
Unamortized premium	1,138			834			—			—			5			35			2,012
Amortized cost	43,610			26,329			—			306			344			1,109			71,698
Gross unrealized gains	620			340			—			7			10			22			999
Gross unrealized losses	(172		)	(101		)	—			—			(1		)	(2		)	(276		)
Total securities remeasured at fair value through earnings	44,058			26,568			—			313			353			1,129			72,421
Total securities, at fair value	$	61,222		$	32,223		$	24		$	319		$	353		$	1,129		$	95,270
Weighted average coupon as of March 31, 2019	3.83		%	3.92		%	3.72		%	3.86		%	4.65		%	5.69		%	3.88		%
Weighted average yield as of March 31, 2019 1	3.24		%	3.30		%	2.06		%	4.22		%	4.61		%	4.75		%	3.29		%

 ________________________________

1. Incorporates a weighted average future constant prepayment rate assumption of 10.5% based on forward rates as of March 31, 2019.

	December 31, 2018
	Agency RMBS									Non-Agency
Investment Securities	Fannie  Mae			Freddie Mac			Ginnie  Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	17,591		$	5,673		$	25		$	6		$	—		$	—		$	23,295
Unamortized discount	(10		)	(2		)	—			—			—			—			(12		)
Unamortized premium	912			343			—			—			—			—			1,255
Amortized cost	18,493			6,014			25			6			—			—			24,538
Gross unrealized gains	4			2			1			—			—			—			7
Gross unrealized losses	(686		)	(264		)	—			—			—			—			(950		)
Total available-for-sale securities, at fair value	17,811			5,752			26			6			—			—			23,595
Securities remeasured at fair value through earnings:
Par value	39,453			18,428			—			268			281			968			59,398
Unamortized discount	(78		)	(9		)	—			(10		)	(6		)	—			(103		)
Unamortized premium	1,055			638			—			—			5			38			1,736
Amortized cost	40,430			19,057			—			258			280			1,006			61,031
Gross unrealized gains	223			57			—			2			3			18			303
Gross unrealized losses	(386		)	(243		)	—			—			(1		)	(12		)	(642		)
Total securities remeasured at fair value through earnings	40,267			18,871			—			260			282			1,012			60,692
Total securities, at fair value	$	58,078		$	24,623		$	26		$	266		$	282		$	1,012		$	84,287
Weighted average coupon as of December 31, 2018	3.82		%	3.87		%	3.37		%	3.83		%	4.58		%	5.86		%	3.86		%
Weighted average yield as of December 31, 2018 1	3.28		%	3.28		%	2.04		%	4.22		%	4.68		%	5.16		%	3.31		%

 ________________________________

1. Incorporates a weighted average future constant prepayment rate assumption of 7.9% based on forward rates as of December 31, 2018.

Components of Investment Securities

The following tables summarize our investment securities as of March 31, 2019 and December 31, 2018, excluding TBA securities, (dollars in millions). Details of our TBA securities as of each of the respective dates are included in Note 6.

	March 31, 2019				December 31, 2018
Investment Securities	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Agency RMBS:
Fixed rate	$	92,374	$	92,502	$	83,047	$	81,753
Adjustable rate	199		201		212		213
CMO	555		555		588		583
Interest-only and principal-only strips	166		179		172		178
Multifamily	31		32		—		—
Total Agency RMBS	93,325		93,469		84,019		82,727
Non-Agency RMBS	313		319		264		266
CMBS	343		353		280		282
CRT securities	1,109		1,129		1,006		1,012
Total investment securities	$	95,090	$	95,270	$	85,569	$	84,287

	March 31, 2019
	Agency RMBS									Non-Agency
Investment Securities	Fannie Mae			Freddie Mac			Ginnie Mae			RMBS			CMBS			CRT			Total
Available-for-sale securities:
Par value	$	16,709		$	5,493		$	23		$	6		$	—		$	—		$	22,231
Unamortized discount	(11		)	(2		)	—			—			—			—			(13		)
Unamortized premium	849			325			—			—			—			—			1,174
Amortized cost	17,547			5,816			23			6			—			—			23,392
Gross unrealized gains	19			5			1			—			—			—			25
Gross unrealized losses	(402		)	(166		)	—			—			—			—			(568		)
Total available-for-sale securities, at fair value	17,164			5,655			24			6			—			—			22,849
Securities remeasured at fair value through earnings:
Par value	42,546			25,501			—			317			409			1,087			69,860
Unamortized discount	(74		)	(6		)	—			(11		)	(70		)	(13		)	(174		)
Unamortized premium	1,138			834			—			—			5			35			2,012
Amortized cost	43,610			26,329			—			306			344			1,109			71,698
Gross unrealized gains	620			340			—			7			10			22			999
Gross unrealized losses	(172		)	(101		)	—			—			(1		)	(2		)	(276		)
Total securities remeasured at fair value through earnings	44,058			26,568			—			313			353			1,129			72,421
Total securities, at fair value	$	61,222		$	32,223		$	24		$	319		$	353		$	1,129		$	95,270
Weighted average coupon as of March 31, 2019	3.83		%	3.92		%	3.72		%	3.86		%	4.65		%	5.69		%	3.88		%
Weighted average yield as of March 31, 2019 1	3.24		%	3.30		%	2.06		%	4.22		%	4.61		%	4.75		%	3.29		%

Summary Of Agency Securities Estimated Weighted Average Life Classifications

The following table summarizes our investments as of March 31, 2019 and December 31, 2018 according to their estimated weighted average life classification (dollars in millions):

	March 31, 2019						December 31, 2018
Estimated Weighted Average Life of Investment Securities	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield	Fair Value		Amortized Cost		Weighted Average Coupon	Weighted Average Yield
≥ 1 year and ≤ 3 years	$	2,452	$	2,461	3.94%	2.83%	$	1,690	$	1,716	3.99%	2.64%
> 3 years and ≤ 5 years	18,438		18,225		3.85%	3.35%	5,518		5,586		3.35%	2.73%
> 5 years and ≤10 years	74,329		74,354		3.89%	3.29%	72,503		73,588		3.92%	3.37%
> 10 years	51		50		3.78%	4.12%	4,576		4,679		3.57%	3.30%
Total	$	95,270	$	95,090	3.88%	3.29%	$	84,287	$	85,569	3.86%	3.31%

Summary of Continuous Unrealized Loss Position of Available for Sale Securities

The following table presents the gross unrealized loss and fair values of securities classified as available-for-sale by length of time that such securities have been in a continuous unrealized loss position as of March 31, 2019 and December 31, 2018 (in millions):

	Unrealized Loss Position For
	Less than 12 Months					12 Months or More					Total
Securities Classified as Available-for-Sale	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
March 31, 2019	$	108	$	(1	)	$	20,119	$	(567	)	$	20,227	$	(568	)
December 31, 2018	$	4,783	$	(72	)	$	18,231	$	(878	)	$	23,014	$	(950	)

Summary of Net Gain from Sale of Agency Securities

The following table is a summary of our net gain (loss) from the sale of investment securities for the three months ended March 31, 2019 and 2018 by investment classification of accounting (in millions):

	Three Months Ended March 31,
	2019									2018
Investment Securities	Available-for-Sale Securities 2			Fair Value Option Securities			Total			Available-for-Sale Securities 2			Fair Value Option Securities			Total
Investment securities sold, at cost	$	(339	)	$	(4,562	)	$	(4,901	)	$	(387	)	$	(1,003	)	$	(1,390	)
Proceeds from investment securities sold 1	335			4,626			4,961			388			1,000			1,388
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)
Gross gain on sale of investment securities	$	—		$	66		$	66		$	3		$	7		$	10
Gross loss on sale of investment securities	(4		)	(2		)	(6		)	(2		)	(10		)	(12		)
Net gain (loss) on sale of investment securities	$	(4	)	$	64		$	60		$	1		$	(3	)	$	(2	)

  ________________________________

1. Proceeds include cash received during the period, plus receivable for investment securities sold during the period as of period end.

2. See Note 10 for a summary of changes in accumulated OCI.  

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Repurchase Agreements and Reverse Repurchase Agreements (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of Repurchase Agreements [Abstract]

Schedule of Borrowings under Repurchase Agreements and Weighted Average Interest Rates

he following table summarizes our borrowings under repurchase agreements by their remaining maturities as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019					December 31, 2018
Remaining Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity	Repurchase Agreements		Weighted Average Interest Rate		Weighted Average Days to Maturity
Agency repo:
≤ 1 month	$	44,624	2.94	%	8	$	48,533	2.88	%	9
> 1 to ≤ 3 months	26,690		2.66	%	65	20,991		2.57	%	56
> 3 to ≤ 6 months	2,181		2.67	%	125	2,218		2.65	%	167
> 6 to ≤ 9 months	2,450		2.68	%	204	200		3.19	%	208
> 9 to ≤ 12 months	7,554		2.75	%	288	950		2.80	%	279
> 12 to ≤ 24 months	1,825		2.97	%	516	2,200		2.91	%	438
> 24 to ≤ 36 months	1,000		2.67	%	1,044	625		3.11	%	776
Total Agency repo	86,324		2.82	%	81	75,717		2.79	%	49
U.S. Treasury repo:
> 1 day to ≤ 1 month	361		2.91	%	1	—		—	%	—
Total	$	86,685	2.82	%	81	$	75,717	2.79	%	49

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Derivative and Other Hedging Instruments (Tables)

3 Months Ended

Mar. 31, 2019

Derivative [Line Items]

Schedule of Outstanding Derivatives Not Designated as Hedging Instruments

The table below summarizes fair value information about our derivative and other hedging instrument assets/(liabilities) as of March 31, 2019 and December 31, 2018 (in millions):

Derivative and Other Hedging Instruments	Balance Sheet Location	March 31, 2019			December 31, 2018
Interest rate swaps	Derivative assets, at fair value	$	151		$	126
Swaptions	Derivative assets, at fair value	11			37
TBA securities	Derivative assets, at fair value	91			110
Total derivative assets, at fair value		$	253		$	273
Interest rate swaps	Derivative liabilities, at fair value	$	(1	)	$	—
TBA securities	Derivative liabilities, at fair value	(21		)	(40		)
U.S. Treasury futures - short	Derivative liabilities, at fair value	(31		)	(44		)
Total derivative liabilities, at fair value		$	(53	)	$	(84	)
U.S. Treasury securities - long	U.S. Treasury securities, at fair value	$	121		$	46
U.S. Treasury securities - short	Obligation to return securities borrowed under reverse repurchase agreements, at fair value	(19,275		)	(21,431		)
Total U.S. Treasury securities, net at fair value		$	(19,154	)	$	(21,385	)

Schedule of Interest Rate Swaption Agreements Outstanding

Swaptions	Option					Underlying Payer Swap
Current Option Expiration Date	Cost Basis		Fair Value		Average Months to Current Option Expiration Date 1	Notional Amount		Average Fixed Pay Rate	Average Receive Rate (LIBOR)	Average Term (Years)
March 31, 2019
≤ 1 year	$	71	$	5	4	$	2,050	2.98%	3M	7.0
> 1 year ≤ 2 years	18		6		15	500		2.78%	3M	10.0
Total	$	89	$	11	7	$	2,550	2.94%	3M	7.6
December 31, 2018
≤ 1 year	$	80	$	23	4	$	3,000	2.96%	3M	7.0
> 1 year ≤ 2 years	18		14		18	500		2.78%	3M	10.0
Total	$	98	$	37	6	$	3,500	2.93%	3M	7.4

________________________________

1. As of March 31, 2019 and December 31, 2018, ≤ 1 year notional amount includes $700 million of Bermudan swaptions where the options may be exercised on predetermined dates up to their final exercise date, which is six months prior to the underlying swaps' maturity date.

U.S. Treasury Securities	March 31, 2019									December 31, 2018
Maturity	Face Amount (Short)			Cost Basis 1			Fair Value			Face Amount (Short)			Cost Basis 1			Fair Value
5 years	$	120		$	120		$	121		$	(703	)	$	(706	)	$	(713	)
7 years	(12,990		)	(12,976		)	(13,285		)	(14,357		)	(14,325		)	(14,410		)
10 years	(5,745		)	(5,810		)	(5,990		)	(6,240		)	(6,224		)	(6,262		)
Total U.S. Treasury securities	$	(18,615	)	$	(18,666	)	$	(19,154	)	$	(21,300	)	$	(21,255	)	$	(21,385	)

US government securities

U.S. Treasury Securities	March 31, 2019									December 31, 2018
Maturity	Face Amount (Short)			Cost Basis 1			Fair Value			Face Amount (Short)			Cost Basis 1			Fair Value
5 years	$	120		$	120		$	121		$	(703	)	$	(706	)	$	(713	)
7 years	(12,990		)	(12,976		)	(13,285		)	(14,357		)	(14,325		)	(14,410		)
10 years	(5,745		)	(5,810		)	(5,990		)	(6,240		)	(6,224		)	(6,262		)
Total U.S. Treasury securities	$	(18,615	)	$	(18,666	)	$	(19,154	)	$	(21,300	)	$	(21,255	)	$	(21,385	)

US Government Futures Securities [Table Text Block]

U.S. Treasury Futures	March 31, 2019												December 31, 2018
Maturity	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
10 years	$	(1,650	)	$	(2,019	)	$	(2,050	)	$	(31	)	$	(1,650	)	$	(1,969	)	$	(2,013	)	$	(44	)

________________________________

1.

Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying U.S. Treasury security) of the U.S. Treasury futures contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Summary of Long and Short Position of Derivative Instruments

	March 31, 2019												December 31, 2018
TBA Securities by Coupon	Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1			Notional  Amount - Long (Short)			Cost Basis			Fair Value			Net Carrying Value 1
15-Year TBA securities:
3.0%	$	327		$	328		$	329		$	1		$	567		$	557		$	566		$	9
3.5%	1,969			1,996			2,013			17			1,706			1,708			1,726			18
4.0%	1,083			1,108			1,115			7			1,350			1,370			1,381			11
Total 15-Year TBA securities	3,379			3,432			3,457			25			3,623			3,635			3,673			38
30-Year TBA securities:
3.0%	903			886			899			13			1,028			981			1,003			22
3.5%	3,084			3,095			3,125			30			(2,979		)	(2,943		)	(2,977		)	(34		)
4.0%	(3,148		)	(3,222		)	(3,238		)	(16		)	3,030			3,073			3,089			16
≥ 4.5%	2,604			2,694			2,712			18			2,450			2,506			2,534			28
Total 30-Year TBA securities, net	3,443			3,453			3,498			45			3,529			3,617			3,649			32
Total TBA securities, net	$	6,822		$	6,885		$	6,955		$	70		$	7,152		$	7,252		$	7,322		$	70

________________________________

1.

Net carrying value represents the difference between the fair market value and the cost basis (or the forward price to be paid/(received) for the underlying Agency security) of the TBA contract as of period-end and is reported in derivative assets/(liabilities), at fair value in our consolidated balance sheets.

Schedule Of Outstanding Not Designated As Hedging Instruments

The following table summarizes changes in our derivative and other hedge portfolio and their effect on our consolidated statements of comprehensive income for the three months ended March 31, 2019 and 2018 (in millions):

Derivative and Other Hedging Instruments	Beginning Notional Amount			Additions		Settlement, Termination, Expiration or Exercise		Ending Notional Amount			Gain/(Loss) on Derivative Instruments and Other Securities, Net 1
Three months ended March 31, 2019:
TBA securities, net	$	7,152		18,442		(18,772	)	$	6,822		$	83
Interest rate swaps	$	51,625		5,350		(8,800	)	$	48,175		(596		)
Payer swaptions	$	3,500		—		(950	)	$	2,550		(27		)
U.S. Treasury securities - short position	$	(21,345	)	(4,770	)	7,380		$	(18,735	)	(425		)
U.S. Treasury securities - long position	$	45		405		(330	)	$	120		—
U.S. Treasury futures contracts - short position	$	(1,650	)	(1,650	)	1,650		$	(1,650	)	(31		)
											$	(996	)
Three months ended March 31, 2018:
TBA securities, net	$	15,474		43,669		(45,507	)	$	13,636		$	(292	)
Interest rate swaps	$	43,700		3,150		(1,600	)	$	45,250		663
Payer swaptions	$	6,650		1,100		(1,000	)	$	6,750		91
U.S. Treasury securities - short position	$	(10,699	)	(662	)	563		$	(10,798	)	212
U.S. Treasury securities - long position	$	—		959		(734	)	$	225		—
U.S. Treasury futures contracts - short position	$	(2,910	)	(2,909	)	3,439		$	(2,380	)	62
											$	736

________________________________

1.

Amounts exclude other miscellaneous gains and losses recognized in gain (loss) on derivative instruments and other securities, net in our consolidated statements of comprehensive income.

Not Designated as Hedging Instrument [Member]

Derivative [Line Items]

Schedule Of Interest Rate Swap Agreement By Remaining Maturity

The following tables summarize certain characteristics of our derivative and other hedging instruments outstanding as of March 31, 2019 and December 31, 2018 (dollars in millions):

	March 31, 2019					December 31, 2018
Interest Rate Swaps	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)	Notional Amount 1		Average Fixed Pay  Rate 2	Average Receive Rate	Average Maturity (Years)
≤ 3 years	$	20,900	1.71%	2.69%	1.2	$	19,900	1.63%	2.62%	1.3
> 3 to ≤ 5 years	9,425		2.11%	2.69%	3.7	8,425		2.06%	2.61%	4.0
> 5 to ≤ 7 years	6,225		2.38%	2.67%	5.8	7,875		2.66%	2.66%	6.1
> 7 to ≤ 10 years	9,700		2.30%	2.68%	8.6	10,550		2.36%	2.64%	8.8
> 10 years	1,925		2.30%	2.69%	13.2	4,875		2.77%	2.63%	11.6
Total	$	48,175	2.01%	2.69%	4.3	$	51,625	2.11%	2.63%	5.0

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Pledged Assets (Tables)

3 Months Ended

Mar. 31, 2019

Pledged Assets [Abstract]

Schedule of Securities and Cash Pledged as Collateral from Counterparties [Table Text Block]

As of March 31, 2019 and December 31, 2018, we had assets pledged to us from counterparties as collateral under our reverse repurchase and derivative agreements summarized in the tables below (in millions).

	March 31, 2019								December 31, 2018
Assets Pledged to AGNC 1	Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total		Reverse Repurchase Agreements		Derivative Agreements		Repurchase Agreements		Total
U.S. Treasury securities - fair value	$	20,400	$	10	$	30	$	20,440	$	21,876	$	35	$	37	$	21,948
Cash	—		49		—		49		—		129		—		129
Total	$	20,400	$	59	$	30	$	20,489	$	21,876	$	164	$	37	$	22,077

Schedule of Financial Instruments Owned and Pledged as Collateral

The following tables summarize our assets pledged as collateral under our funding, derivative and prime broker agreements by type, including securities pledged related to securities sold but not yet settled, as of March 31, 2019 and December 31, 2018 (in millions):

	March 31, 2019
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	89,779	$	425	$	174	$	118	$	90,496
CRT - fair value	142		—		—		—		142
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	617		—		—		—		617
Accrued interest on pledged securities	278		1		1		—		280
Restricted cash and cash equivalents	75		—		442		—		517
Total	$	90,936	$	426	$	617	$	118	$	92,097

	December 31, 2018
Assets Pledged to Counterparties 1	Repurchase Agreements 2		Debt of Consolidated VIEs		Derivative Agreements		Prime Broker Agreements 3		Total
Agency RMBS - fair value	$	78,997	$	436	$	174	$	133	$	79,740
CRT - fair value	141		—		—		—		141
Non-Agency - fair value	45		—		—		—		45
U.S. Treasury securities - fair value	437		—		—		—		437
Accrued interest on pledged securities	246		1		1		—		248
Restricted cash and cash equivalents	77		—		522		—		599
Total	$	79,943	$	437	$	697	$	133	$	81,210

________________________________

1. Includes repledged assets received as collateral from counterparties.

2. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

3.

Includes margin for TBAs cleared through prime brokers and other clearing deposits.

Schedules Of Securities Pledged As Collateral Under Repurchase Agreement

The following table summarizes our securities pledged as collateral under our repurchase agreements by the remaining maturity of our borrowings, including securities pledged related to sold but not yet settled securities, as of March 31, 2019 and December 31, 2018 (in millions). For the corresponding borrowings associated with the following amounts and the interest rates thereon, refer to Note 5.

	March 31, 2019						December 31, 2018
Securities Pledged by Remaining Maturity of Repurchase Agreements 1,2	Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities		Fair Value of Pledged Securities		Amortized Cost of Pledged Securities		Accrued Interest on Pledged Securities
≤ 30 days	$	45,947	$	45,673	$	143	$	49,944	$	50,654	$	156
> 30 and ≤ 60 days	10,792		10,758		34		14,586		14,810		46
> 60 and ≤ 90 days	17,282		17,267		53		7,770		7,843		24
> 90 days	15,945		16,108		48		6,882		7,079		21
Total	$	89,966	$	89,806	$	278	$	79,182	$	80,386	$	247

________________________________

1. Includes $161 million and $163 million of retained interests in our consolidated VIEs pledged as collateral under repurchase agreements as of March 31, 2019 and December 31, 2018, respectively.

2.

Excludes $496 million

Offsetting Assets and Liabilities

The following tables present information about our assets and liabilities that are subject to master netting arrangements and can potentially be offset on our consolidated balance sheets as of March 31, 2019 and December 31, 2018 (in millions):

	Offsetting of Financial and Derivative Assets
	Gross Amounts of Recognized Assets		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Assets Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Received 2
March 31, 2019
Interest rate swap and swaption agreements, at fair value 1	$	162	$	—	$	162	$	(1	)	$	(59	)	$	102
TBA securities, at fair value	91		—		91		(21		)	—			70
Receivable under reverse repurchase agreements	20,430		—		20,430		(17,353		)	(3,072		)	5
Total	$	20,683	$	—	$	20,683	$	(17,375	)	$	(3,131	)	$	177
December 31, 2018
Interest rate swap and swaption agreements, at fair value 1	$	163	$	—	$	163	$	—		$	(158	)	$	5
TBA securities, at fair value	110		—		110		(40		)	—			70
Receivable under reverse repurchase agreements	21,813		—		21,813		(17,236		)	(4,575		)	2
Total	$	22,086	$	—	$	22,086	$	(17,276	)	$	(4,733	)	$	77

Offsetting Liabilities

	Offsetting of Financial and Derivative Liabilities
	Gross Amounts of Recognized Liabilities		Gross Amounts Offset in the Consolidated Balance Sheets		Net Amounts of Liabilities Presented in the Consolidated Balance Sheets		Gross Amounts Not Offset  in the Consolidated Balance Sheets						Net Amount
							Financial Instruments			Collateral Pledged 2
March 31, 2019
Interest rate swap agreements, at fair value 1	$	1	$	—	$	1	$	(1	)	$	—		$	—
TBA securities, at fair value	21		—		21		(21		)	—			—
Repurchase agreements	86,685		—		86,685		(17,353		)	(69,332		)	—
Total	$	86,707	$	—	$	86,707	$	(17,375	)	$	(69,332	)	$	—
December 31, 2018
Interest rate swap agreements, at fair value 1	$	—	$	—	$	—	$	—		$	—		$	—
TBA securities, at fair value	40		—		40		(40		)	—			—
Repurchase agreements	75,717		—		75,717		(17,236		)	(58,481		)	—
Total	$	75,757	$	—	$	75,757	$	(17,276	)	$	(58,481	)	$	—

________________________________

1. Reported under derivative assets / liabilities, at fair value in the accompanying consolidated balance sheets. Refer to Note 6 for a reconciliation of derivative assets / liabilities, at fair value to their sub-components.

2.

Includes cash and securities pledged / received as collateral, at fair value. Amounts include repledged collateral. Amounts presented are limited to collateral pledged sufficient to reduce the net amount to zero for individual counterparties, as applicable.

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table provides a summary of our assets and liabilities that are measured at fair value on a recurring basis as of March 31, 2019 and December 31, 2018 based on their categorization within the valuation hierarchy (in millions). There were no transfers between valuation hierarchy levels during the periods presented.

	March 31, 2019						December 31, 2018
	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Assets:
Agency securities	$	—	$	93,044	$	—	$	—	$	82,291	$	—
Agency securities transferred to consolidated VIEs	—		425		—		—		436		—
Credit risk transfer securities	—		1,129		—		—		1,012		—
Non-Agency securities	—		672		—		—		548		—
U.S. Treasury securities	121		—		—		46		—		—
Interest rate swaps	—		151		—		—		126		—
Swaptions	—		11		—		—		37		—
TBA securities	—		91		—		—		110		—
Total	$	121	$	95,523	$	—	$	46	$	84,560	$	—
Liabilities:
Debt of consolidated VIEs	$	—	$	266	$	—	$	—	$	275	$	—
Obligation to return U.S. Treasury securities borrowed under reverse repurchase agreements	19,275		—		—		21,431		—		—
Interest rate swaps	—		1		—		—		—		—
TBA securities	—		21		—		—		40		—
U.S. Treasury futures	31		—		—		44		—		—
Total	$	19,306	$	288	$	—	$	21,475	$	315	$	—

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Preferred Stock [Table Text Block]

The following is a summary of our preferred stock issued and outstanding as of March 31, 2019 (dollars and shares in millions):

Preferred Stock	Issuance Date	Depository Shares Issued and Outstanding	Carrying Value		Aggregate Liquidation Preference		Fixed Rate	Optional Redemption Date 2	Fixed-to-Floating Rate Conversion Date	Floating Annual Rate
Fixed Rate
Series B	May 8, 2014	7.0	$	169	$	175	7.750%	May 8, 2019	N/A	N/A
Fixed-to-Floating Rate 1
Series C	August 22, 2017	13.0	315		325		7.000%	October 15, 2022	October 15, 2022	3M LIBOR + 5.111%
Series D	March 6, 2019	9.4	227		235		6.875%	April 15, 2024	April 15, 2024	3M LIBOR + 4.332%
Total		29.4	$	711	$	735

________________________________

1. Fixed-to-floating rate redeemable preferred stock accrue dividends at a annual fixed rate of the $25.00 liquidation preference per depository share from the issuance date up to, but not including, the fixed-to-floating rate conversion date; thereafter, dividends will accrue on a floating rate basis equal to 3 month LIBOR plus a fixed spread.

2.

Shares may be redeemed prior to our optional redemption date under certain circumstances intended to preserve our qualification as a REIT for U.S federal income tax purposes.

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table summarizes changes to accumulated OCI for the three months ended March 31, 2019 and 2018 (in millions):

	Three Months Ended March 31,
Accumulated Other Comprehensive Income (Loss)	2019			2018
Beginning Balance	$	(943	)	$	(345	)
OCI before reclassifications	396			(620		)
(Gain) loss amounts for available-for-sale securities reclassified from accumulated OCI to realized gain (loss) on sale of investment securities	4			(1		)
Ending Balance	$	(543	)	$	(966	)

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Organization (Details)	3 Months Ended
	Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Required Annual Distribution of Taxable Net Income	90.00%
Intended annual distribution of taxable net income	100.00%

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Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2019
Derivative [Line Items]
Document Period End Date	Mar. 31, 2019
Required Annual Distribution of Taxable Net Income	90.00%

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Summary of Significant Accounting Policies Variable Interest Entities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Document Period End Date	Mar. 31, 2019
Other Long-term Debt	$ 266	$ 275
Debt Instrument, Description of Variable Rate Basis	LIBOR
Spread Over LIBOR	41	40
Weighted Average Life Other Debt	5 years 10 months 24 days	6 years 1 month 6 days

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Investment Securities (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Document Period End Date	Mar. 31, 2019
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure	$ 95,300	$ 84,300
Weighted average expected constant prepayment rate	10.50%	7.90%
Variable Interest Entity, Consolidated, Carrying Amount, Assets	$ (425)	$ (436)
Debt, at fair value	(266)	(275)
Agency Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Unamortized premium balance	3,000	2,900
TBA securities Fifteen Year and Thirty Year Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Net long TBA position, at fair value	7,000	7,300
TBA, net carrying value	$ 70	$ 70
Credit Risk Transfer Securities [Member] | Minimum [Member]
Debt Securities, Available-for-sale [Line Items]
Weighted Average Coupon Rate	3.00%	3.90%
Underlying Collateral Coupon	3.70%	3.80%
Credit Risk Transfer Securities [Member] | Maximum [Member]
Debt Securities, Available-for-sale [Line Items]
Weighted Average Coupon Rate	8.80%	9.50%
Underlying Collateral Coupon	4.90%	4.80%

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Investment Securities (Summary of Investment in Agency Security) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	$ 95,090	$ 85,569
Document Period End Date	Mar. 31, 2019
Debt Securities, Trading and Available-for-sale	$ 95,270	84,287
Total agency MBS, at fair value	93,469	82,727
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	313	264
Debt Securities, Trading and Available-for-sale	319	266
Commercial Mortgage Backed Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	343	280
Debt Securities, Trading and Available-for-sale	353	282
Credit Risk Transfer Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	1,109	1,006
Debt Securities, Trading and Available-for-sale	1,129	1,012
Fixed Income Securities [Member] | Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	92,374	83,047
Debt Securities, Trading and Available-for-sale	92,502	81,753
Adjustable-Rate [Member] | Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	199	212
Debt Securities, Trading and Available-for-sale	201	213
Collateralized Mortgage Obligations [Member] | Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	555	588
Debt Securities, Trading and Available-for-sale	555	583
Multifamily [Member] | Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	31	0
Debt Securities, Trading and Available-for-sale	32	0
Interest Only And Principal Only Strip [Member] | Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	166	172
Debt Securities, Trading and Available-for-sale	179	178
Agency Securities [Member]
Debt Securities, Trading and Available-for-sale, Amortized Cost Basis	$ 93,325	$ 84,019

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Investment Securities (Components Of Investment Securities) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Document Period End Date	Mar. 31, 2019
Agency securities transferred to consolidated VIEs	$ 425	$ 436
Debt Securities, Trading	72,421	60,692
Debt Securities, Trading and Available-for-sale	95,270	84,287
Amortized cost	$ 95,090	$ 85,569
Weighted average coupon	3.88%	3.86%
Weighted average yield	3.29%	3.31%
Future Prepayment Rate Assumption Of Investment Portfolio	10.50%	7.90%
Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 22,231	$ 23,295
Unamortized discount	(13)	(12)
Unamortized premium	1,174	1,255
Amortized cost	23,392	24,538
Gross unrealized gains	25	7
Gross unrealized losses	(568)	(950)
Total available-for-sale securities, at fair value	22,849	23,595
Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(174)	(103)
Unamortized premium	2,012	1,736
Debt Securities, Trading, Unrealized Gain	999	303
Debt Securities, Trading, Unrealized Loss	276	642
Trading Securities, Cost	71,698	61,031
Trading Securities Par	69,860	59,398
Fannie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	44,058	40,267
Debt Securities, Trading and Available-for-sale	$ 61,222	$ 58,078
Weighted average coupon	3.83%	3.82%
Weighted average yield	3.24%	3.28%
Fannie Mae [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 16,709	$ 17,591
Unamortized discount	(11)	(10)
Unamortized premium	849	912
Amortized cost	17,547	18,493
Gross unrealized gains	19	4
Gross unrealized losses	(402)	(686)
Total available-for-sale securities, at fair value	17,164	17,811
Fannie Mae [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(74)	(78)
Unamortized premium	1,138	1,055
Debt Securities, Trading, Unrealized Gain	620	223
Debt Securities, Trading, Unrealized Loss	172	386
Trading Securities, Cost	43,610	40,430
Trading Securities Par	42,546	39,453
Freddie Mac [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	26,568	18,871
Debt Securities, Trading and Available-for-sale	$ 32,223	$ 24,623
Weighted average coupon	3.92%	3.87%
Weighted average yield	3.30%	3.28%
Freddie Mac [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 5,493	$ 5,673
Unamortized discount	(2)	(2)
Unamortized premium	325	343
Amortized cost	5,816	6,014
Gross unrealized gains	5	2
Gross unrealized losses	(166)	(264)
Total available-for-sale securities, at fair value	5,655	5,752
Freddie Mac [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(6)	(9)
Unamortized premium	834	638
Debt Securities, Trading, Unrealized Gain	340	57
Debt Securities, Trading, Unrealized Loss	101	243
Trading Securities, Cost	26,329	19,057
Trading Securities Par	25,501	18,428
Ginnie Mae [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	0	0
Debt Securities, Trading and Available-for-sale	$ 24	$ 26
Weighted average coupon	3.72%	3.37%
Weighted average yield	2.06%	2.04%
Ginnie Mae [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 23	$ 25
Unamortized discount	0	0
Unamortized premium	0	0
Amortized cost	23	25
Gross unrealized gains	1	1
Gross unrealized losses	0	0
Total available-for-sale securities, at fair value	24	26
Ginnie Mae [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	0	0
Unamortized premium	0	0
Debt Securities, Trading, Unrealized Gain	0	0
Debt Securities, Trading, Unrealized Loss	0	0
Trading Securities, Cost	0	0
Trading Securities Par	0	0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	313	260
Debt Securities, Trading and Available-for-sale	$ 319	$ 266
Weighted average coupon	3.86%	3.83%
Weighted average yield	4.22%	4.22%
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 6	$ 6
Unamortized discount	0	0
Unamortized premium	0	0
Amortized cost	6	6
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Total available-for-sale securities, at fair value	6	6
Mortgage-backed Securities, Issued by Private Enterprises [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(11)	(10)
Unamortized premium	0	0
Debt Securities, Trading, Unrealized Gain	7	2
Debt Securities, Trading, Unrealized Loss	0	0
Trading Securities, Cost	306	258
Trading Securities Par	317	268
Commercial Mortgage Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	353	282
Debt Securities, Trading and Available-for-sale	$ 353	$ 282
Weighted average coupon	4.65%	4.58%
Weighted average yield	4.61%	4.68%
Commercial Mortgage Backed Securities [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 0	$ 0
Unamortized discount	0	0
Unamortized premium	0	0
Amortized cost	0	0
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Total available-for-sale securities, at fair value	0	0
Commercial Mortgage Backed Securities [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(70)	(6)
Unamortized premium	5	5
Debt Securities, Trading, Unrealized Gain	10	3
Debt Securities, Trading, Unrealized Loss	1	1
Trading Securities, Cost	344	280
Trading Securities Par	409	281
Credit Risk Transfer Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading	1,129	1,012
Debt Securities, Trading and Available-for-sale	$ 1,129	$ 1,012
Weighted average coupon	5.69%	5.86%
Weighted average yield	4.75%	5.16%
Credit Risk Transfer Securities [Member] | Available-for-sale Securities [Member]
Schedule of Investments [Line Items]
Par value	$ 0	$ 0
Unamortized discount	0	0
Unamortized premium	0	0
Amortized cost	0	0
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Total available-for-sale securities, at fair value	0	0
Credit Risk Transfer Securities [Member] | Trading Securities [Member]
Schedule of Investments [Line Items]
Unamortized discount	(13)	0
Unamortized premium	35	38
Debt Securities, Trading, Unrealized Gain	22	18
Debt Securities, Trading, Unrealized Loss	2	(12)
Trading Securities, Cost	1,109	1,006
Trading Securities Par	1,087	968
Credit Risk Transfer Securities [Member] | Securities Remeasured at Fair Value [Member]
Schedule of Investments [Line Items]
Debt Securities, Trading and Available-for-sale	$ 1,129	$ 1,012

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Investment Securities (Summary Of Agency Securities Estimated Weighted Average Life Classifications) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Document Period End Date	Mar. 31, 2019
Agency securities classified as available for sale, Fair value	$ 95,270	$ 84,287
Agency securities classified as available for sale, Amortized cost	$ 95,090	$ 85,569
Weighted Average Coupon	3.88%	3.86%
Weighted Average Yield	3.29%	3.31%
Greater Than One Year and Less Than or Equal to Three Years [Member]
Fair Value	$ 2,452	$ 1,690
Amortized Cost	$ 2,461	$ 1,716
Weighted Average Coupon	3.94%	3.99%
Weighted Average Yield	2.83%	2.64%
Greater Than Three Years and Less Than or Equal to Five Years [Member]
Fair Value	$ 18,438	$ 5,518
Amortized Cost	$ 18,225	$ 5,586
Weighted Average Coupon	3.85%	3.35%
Weighted Average Yield	3.35%	2.73%
Greater Than Five Years [Member]
Fair Value	$ 74,329	$ 72,503
Amortized Cost	$ 74,354	$ 73,588
Weighted Average Coupon	3.89%	3.92%
Weighted Average Yield	3.29%	3.37%
Greater Than Ten Years [Member]
Fair Value	$ 51	$ 4,576
Amortized Cost	$ 50	$ 4,679
Weighted Average Coupon	3.78%	3.57%
Weighted Average Yield	4.12%	3.30%

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Investment Securities (Summary Of Changes In Accumulated OCI For Available-For-Sale Security) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Unrealized Gains and (Losses), Net	$ 400	$ (621)
Agency Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning OCI Balance	(943)	(345)
Unrealized Gains and (Losses), Net	396	(620)
Reversal of Unrealized (Gains) and Losses, Net on Realization	4	(1)
Ending OCI Balance	$ (543)	$ (966)

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Investment Securities (Summary Of Continuous Unrealized Loss Positions Of Available-For-Sale Security) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Document Period End Date	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized Loss Position For - Estimated Fair Value - Less than 12 Months	$ 108	$ 4,783
Unrealized Loss Position For - Unrealized Loss - Less than 12 Months	(1)	(72)
Unrealized Loss Position For - Estimated Fair Value - 12 Months or More	20,119	18,231
Unrealized Loss Position For - Unrealized Loss - 12 Months or More	(567)	(878)
Unrealized Loss Position For - Estimated Fair Value - Total	20,227	23,014
Unrealized Loss Position For - Unrealized Loss - Total	$ (568)	$ (950)

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Investment Securities (Summary Of Net Gain From Sale Of Agency Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cost of Sale of Fair Value Option Securities	$ (4,562)	$ (1,003)
Cost of Sale of Investment Securities	(4,901)	(1,390)
Proceeds from agency MBS sold	5,103	1,403
Net gain (loss) on sale of investment securities	60	(2)
Available-for-sale Securities [Member]
Agency MBS sold, at cost	(339)	(387)
Proceeds from agency MBS sold	335	388
Net gain (loss) on sale of investment securities		1
Gross gain on sale of investment securities	0	3
Gross loss on sale of investment securities	(4)	(2)
Securities Remeasured at Fair Value [Member]
Proceeds from agency MBS sold	4,626	1,000
Net gain (loss) on sale of investment securities		(3)
Gross gain on sale of investment securities	66	7
Gross loss on sale of investment securities	(2)	(10)
Securities (Assets) [Member]
Proceeds from agency MBS sold	4,961	1,388
Net gain (loss) on sale of investment securities	60	(2)
Gross gain on sale of investment securities	66	10
Gross loss on sale of investment securities	(6)	$ (12)
Cost and Proceeds of Investment Securities [Member] | Available-for-sale Securities [Member]
Net gain (loss) on sale of investment securities	(4)
Cost and Proceeds of Investment Securities [Member] | Securities Remeasured at Fair Value [Member]
Net gain (loss) on sale of investment securities	64
Gross Gain & Loss of Investment Securities [Member] | Available-for-sale Securities [Member]
Net gain (loss) on sale of investment securities	(4)
Gross Gain & Loss of Investment Securities [Member] | Securities Remeasured at Fair Value [Member]
Net gain (loss) on sale of investment securities	$ 64

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Investment Securities Securities by Credit Rating (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Document Period End Date	Mar. 31, 2019
Debt Securities, Trading	$ 72,421	$ 60,692
Debt Securities, Trading and Available-for-sale	95,270	84,287
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	313	260
Debt Securities, Trading and Available-for-sale	319	266
Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	353	282
Debt Securities, Trading and Available-for-sale	353	282
Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	1,129	1,012
Debt Securities, Trading and Available-for-sale	1,129	1,012
Securities Remeasured at Fair Value [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading and Available-for-sale	1,129	1,012
BBB Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	63	43
BBB Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	58	53
BBB Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	54	25
BB Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	8	8
BB Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	10	10
BB Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	412	492
AAA Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	156	160
AAA Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	62	52
AAA Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
AA Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	42	17
AA Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	190	152
AA Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
A Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	45	33
A Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	33	15
A Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	17	17
B Rating [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	2	2
B Rating [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
B Rating [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	600	453
Not Rated [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	3	3
Not Rated [Member] | Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	0	0
Not Rated [Member] | Credit Risk Transfer Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	$ 46	$ 25

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Repurchase Agreements And Reverse Repurchase Agreements (Narrative) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($) days	Dec. 31, 2018 USD ($) days
Assets Sold under Agreements to Repurchase [Line Items]
Document Period End Date	Mar. 31, 2019
Receivable Under Reverse Repurchase Agreements	$ 20,430	$ 21,813
Securities Sold under Agreements to Repurchase	86,685	75,717
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 19,275	$ 21,431
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.82%	2.79%
Debt of consolidated variable interest entities, at fair value	$ (266)	$ (275)
Description of variable rate basis	LIBOR
Basis spread over LIBOR	41	40
Weighted average life of other debt	5 years 10 months 24 days	6 years 1 month 6 days
TBA securities Fifteen Year and Thirty Year Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Derivative, Fair Value, Net	$ 70	$ 70
TBA and Forward Settling Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Derivative, Forward Settlement Value	6,885	7,252
Derivative, Fair Value, Net	70	70
Forward Contracts [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 10,700	$ 10,700
Weighted Average Forward Start Days | days	85	9
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.55%	2.90%
Agency Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 86,324	$ 75,717
Short-term Debt, Weighted Average Interest Rate, at Point in Time	2.82%	2.79%
Bethesda Securities [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Percentage of Repurchase Agreement Funding	41.00%	35.00%
FICC [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Percentage of Repurchase Agreement Funding	40.00%	33.00%
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 5,600	$ 4,500

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Repurchase Agreements And Other Debt (Repurchase Arrangements And Weighted Average Interest Rates Classified By Original Maturities) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) days	Dec. 31, 2018 USD ($) days
Document Period End Date	Mar. 31, 2019
Repurchase Agreements	$ 86,685	$ 75,717
Weighted Average Interest Rate	2.82%	2.79%
Weighted Average Days to Maturity | days	81	49
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 19,275	$ 21,431
Maturity Overnight [Member]
Repurchase Agreements	18,700	19,500
30 Days or Less [Member]
Repurchase Agreements	$ 44,624	$ 48,533
Weighted Average Interest Rate	2.94%	2.88%
Weighted Average Days to Maturity | days	8	9
1 to 3 Months
Repurchase Agreements	$ 26,690	$ 20,991
Weighted Average Interest Rate	2.66%	2.57%
Weighted Average Days to Maturity | days	65	56
3 to 6 Months
Repurchase Agreements	$ 2,181	$ 2,218
Weighted Average Interest Rate	2.67%	2.65%
Weighted Average Days to Maturity | days	125	167
6 to 9 Months
Repurchase Agreements	$ 2,450	$ 200
Weighted Average Interest Rate	2.68%	3.19%
Weighted Average Days to Maturity | days	204	208
9 to 12 Months
Repurchase Agreements	$ 7,554	$ 950
Weighted Average Interest Rate	2.75%	2.80%
Weighted Average Days to Maturity | days	288	279
12 to 24 Months
Repurchase Agreements	$ 1,825	$ 2,200
Weighted Average Interest Rate	2.97%	2.91%
Weighted Average Days to Maturity | days	516	438
24 to 36 Months
Repurchase Agreements	$ 1,000	$ 625
Weighted Average Interest Rate	2.67%	3.11%
Weighted Average Days to Maturity | days	1,044	776
US Treasury Securities [Member] | 2 Days to 1 Month [Member]
Repurchase Agreements	$ 361	$ 0
Weighted Average Interest Rate	2.91%	0.00%
Weighted Average Days to Maturity | days	1	0
Agency Securities [Member]
Repurchase Agreements	$ 86,324	$ 75,717
Weighted Average Interest Rate	2.82%	2.79%
Weighted Average Days to Maturity | days	81	49
FICC [Member]
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 5,600	$ 4,500

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Derivative and Other Hedging Instruments (Narrative) (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019 USD ($) month	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) month	Dec. 31, 2017 USD ($)
Interest Rate Swaption [Member]
Average Maturity (Years)	7 years 7 months 6 days		7 years 4 months 24 days
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration | month	7		6
Notional Amount	$ 2,550		$ 3,500
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(27)	$ 91
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	0	1,100
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	$ (950)	(1,000)
Derivative, Average Fixed Interest Rate	2.94%		2.93%
Interest Rate Derivatives, at Fair Value, Net	$ 11		$ 37
Options At Cost	89		98
TBA and Forward Settling Agency Securities [Member]
Notional Amount	6,822	13,636	7,152	$ 15,474
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	83	(292)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	18,442	43,669
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period		(45,507)
US Treasury Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(31)	62
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(996)	736
Not Designated as Hedging Instrument [Member] | Interest Rate Swaption [Member]
Notional Amount	2,550
Short [Member] | US Treasury Securities [Member]
Notional Amount	18,735	10,798	21,345	10,699
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(425)	212
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	(4,770)	662
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	7,380	(563)
Long [Member] | US Treasury Securities [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0	0
Trading Securities Added During the Period	405	959
Notional Amount Of Trading Securities Settlement Expiration During The Period	(330)	(734)
Debt Securities, Trading, and Equity Securities, FV-NI		$ 225	$ 45	$ 0
Long [Member]
Debt Securities, Trading, and Equity Securities, FV-NI	$ 120

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Derivative and Other Hedging Instruments (Fair Value Information) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Derivative asset, fair value	$ 253		$ 273
Derivative liability, fair value	(53)		(84)
Derivative assets, at fair value	253		273
Derivative Liability	(53)		(84)
U.S. Treasury securities	121		46
U.S. Treasury Securities - short	(19,275)		(21,431)
Total - (short)/long, net	(19,154)		(21,385)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(996)	$ 736
TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	6,822	13,636	7,152	$ 15,474
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	18,442	43,669
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period		(45,507)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	83	(292)
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	48,175		51,625
Derivative liability, fair value	(1)		0
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	5,350	3,150
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(8,800)	(1,600)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(596)	663
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative asset, fair value	151		126
Interest Rate Swaption [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	2,550		3,500
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	0	1,100
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(950)	(1,000)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(27)	91
Interest Rate Swaption [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative asset, fair value	11		37
Purchases Of TBAs And Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative liability, fair value	(21)		(40)
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	(18,772)
US Treasury Securities [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(31)	62
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Future [Member] | Fair Value, Inputs, Level 1 [Member]
Derivative [Line Items]
Derivative Liability	(31)		(44)
TBA and Forward Settling Agency Securities [Member] | Fair Value, Measurements, Recurring [Member] | Purchases Of TBAs And Forward Settling Agency Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Derivative [Line Items]
Derivative assets, at fair value	91		110
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	48,175
Not Designated as Hedging Instrument [Member] | Interest Rate Swaption [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	2,550
Short [Member] | US Treasury Securities [Member]
Derivative [Line Items]
Derivative Liability, Notional Amount	18,735	10,798	21,345	10,699
Notional Amount Of Derivatives Not Designated As Hedging Instruments Additions During The Period	(4,770)	662
Notional Amount Of Derivatives Not Designated As Hedging Instruments Settlement Expiration During The Period	7,380	(563)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(425)	212
Long [Member]
Derivative [Line Items]
Debt Securities, Trading, and Equity Securities, FV-NI	120
Long [Member] | US Treasury Securities [Member]
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	0	0
Debt Securities, Trading, and Equity Securities, FV-NI		225	$ 45	$ 0
Trading Securities Added During the Period	405	959
Notional Amount Of Trading Securities Settlement Expiration During The Period	$ (330)	$ (734)

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Derivative and Other Hedging Instruments (Summary Of Outstanding Interest Rate Swaps) (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019 USD ($) month	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) month
Document Period End Date	Mar. 31, 2019
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (996)	$ 736
Payer Swaption [Member]
Interest Rate Derivative Not Designated As Hedging Instruments Receive Rate	3M		3M
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (27)	91
Notional Amount	$ 2,550		$ 3,500
Average Fixed Pay Rate	2.94%		2.93%
Options At Cost	$ 89		$ 98
Interest Rate Derivatives, at Fair Value, Net	$ 11		$ 37
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration | month	7		6
Average Maturity (Years)	7 years 7 months 6 days		7 years 4 months 24 days
Forward Contracts [Member] | Interest Rate Swap [Member]
Derivative, Notional Amount	$ 4,000		$ 5,700
Weighted Average Forward Start Date	2 months 12 days		6 months
Interest Rate Swap [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (596)	$ 663
Notional Amount	$ 48,175		$ 51,625
Average Fixed Pay Rate	2.01%		2.11%
Average Receive Rate	2.69%		2.63%
Average Maturity (Years)	4 years 3 months 18 days		5 years
Less Than or Equal to One Year [Member] | Payer Swaption [Member]
Interest Rate Derivative Not Designated As Hedging Instruments Receive Rate	3M		3M
Less Than or Equal to One Year [Member] | Interest Rate Swaption [Member]
Notional Amount	$ 2,050		$ 3,000
Average Fixed Pay Rate	2.98%		2.96%
Options At Cost	$ 71		$ 80
Interest Rate Derivatives, at Fair Value, Net	$ 5		$ 23
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration | month	4		4
Average Maturity (Years)	7 years		7 years
Greater Than One Year and Less Than or Equal to Two Years [Member] | Payer Swaption [Member]
Interest Rate Derivative Not Designated As Hedging Instruments Receive Rate	3M		3M
Greater Than One Year and Less Than or Equal to Two Years [Member] | Interest Rate Swaption [Member]
Notional Amount	$ 500		$ 500
Average Fixed Pay Rate	2.78%		2.78%
Options At Cost	$ 18		$ 18
Interest Rate Derivatives, at Fair Value, Net	$ 6		$ 14
Cash Flow Hedges Derivative Instruments Not Designated As Hedging Instruments Average Months To Expiration | month	15		18
Average Maturity (Years)	10 years		10 years
Greater Than One Year and Less Than or Equal to Three Years [Member] | Interest Rate Swap [Member]
Notional Amount	$ 20,900		$ 19,900
Average Fixed Pay Rate	1.71%		1.63%
Average Receive Rate	2.69%		2.62%
Average Maturity (Years)	1 year 2 months 12 days		1 year 3 months 18 days
Greater Than Three Years and Less Than or Equal to Five Years [Member] | Interest Rate Swap [Member]
Notional Amount	$ 9,425		$ 8,425
Average Fixed Pay Rate	2.11%		2.06%
Average Receive Rate	2.69%		2.61%
Average Maturity (Years)	3 years 8 months 12 days		4 years
Greater Than Five Years and Less than or Equal to Seven Years [Member] | Interest Rate Swap [Member]
Notional Amount	$ 6,225		$ 7,875
Average Fixed Pay Rate	2.38%		2.66%
Average Receive Rate	2.67%		2.66%
Average Maturity (Years)	5 years 9 months 18 days		6 years 1 month 6 days
Greater Than Seven Years and Less than or Equal to Ten Years [Member] | Interest Rate Swap [Member]
Notional Amount	$ 9,700		$ 10,550
Average Fixed Pay Rate	2.30%		2.36%
Average Receive Rate	2.68%		2.64%
Average Maturity (Years)	8 years 7 months 6 days		8 years 9 months 18 days
Greater Than Ten Years [Member] | Interest Rate Swap [Member]
Notional Amount	$ 1,925		$ 4,875
Average Fixed Pay Rate	2.30%		2.77%
Average Receive Rate	2.69%		2.63%
Average Maturity (Years)	13 years 2 months 12 days		11 years 7 months 6 days

XML

Derivative and Other Hedging Instruments (Remaining Interest Rate Swap Term) (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2019 USD ($) month	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) month
Document Period End Date	Mar. 31, 2019
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (996)	$ 736
Interest Rate Swaption [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(27)	91
Cost	89		$ 98
Fair Value	$ 11		$ 37
Average Months to Expiration | month	7		6
Derivative Liability, Notional Amount	$ 2,550		$ 3,500
Average Fixed Pay Rate	2.94%		2.93%
Average Maturity (Years)	7 years 7 months 6 days		7 years 4 months 24 days
Payer Swaption [Member]
Average Receive Rate (LIBOR)	3M		3M
Interest Rate Swap [Member]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (596)	$ 663
Derivative Liability, Notional Amount	$ 48,175		$ 51,625
Average Fixed Pay Rate	2.01%		2.11%
Average Maturity (Years)	4 years 3 months 18 days		5 years
Less Than or Equal to One Year [Member] | Interest Rate Swaption [Member]
Cost	$ 71		$ 80
Fair Value	$ 5		$ 23
Average Months to Expiration | month	4		4
Derivative Liability, Notional Amount	$ 2,050		$ 3,000
Average Fixed Pay Rate	2.98%		2.96%
Average Maturity (Years)	7 years		7 years
Less Than or Equal to One Year [Member] | Payer Swaption [Member]
Average Receive Rate (LIBOR)	3M		3M
Greater Than One Year and Less Than or Equal to Three Years [Member] | Interest Rate Swap [Member]
Derivative Liability, Notional Amount	$ 20,900		$ 19,900
Average Fixed Pay Rate	1.71%		1.63%
Average Maturity (Years)	1 year 2 months 12 days		1 year 3 months 18 days
Bermudan [Member] | Interest Rate Swaption [Member]
Derivative Liability, Notional Amount	$ 700
Interest Rate Swaps Excluding Forward Starting [Member] | Interest Rate Swap [Member]
Average Fixed Pay Rate	1.96%		1.98%

XML

Derivative and Other Hedging Instruments (US Treasury Securities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Document Period End Date	Mar. 31, 2019
U.S. Treasury securities, net	$ (19,154)	$ (21,385)
Weighted Average Yield Percentage	3.29%	3.31%
7 Years Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	$ (12,990)	$ (14,357)
At Par Value [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(18,615)	(21,300)
TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(6,822)	(7,152)
Derivative, Forward Settlement Value	(6,885)	(7,252)
Derivative Asset, Fair Value, Gross Asset	(6,955)	(7,322)
Derivative, Fair Value, Net	70	70
5 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	120	(703)
10 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(5,745)	(6,240)
10 Year Maturity [Member] | US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	(31)	(44)
Short [Member] | 10 Year Maturity [Member] | US Treasury Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(1,650)	(1,650)
Derivative, Forward Settlement Value	(2,019)	(1,969)
Derivative Asset, Fair Value, Gross Asset	(2,050)	(2,013)
Fair Value Hedging [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(19,154)	(21,385)
Fair Value Hedging [Member] | 7 Years Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(13,285)	(14,410)
Fair Value Hedging [Member] | 5 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	121	(713)
Fair Value Hedging [Member] | 10 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(5,990)	(6,262)
At Cost Basis [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(18,666)	(21,255)
At Cost Basis [Member] | 7 Years Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	(12,976)	(14,325)
At Cost Basis [Member] | 5 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	120	(706)
At Cost Basis [Member] | 10 Year Maturity [Member]
Derivative [Line Items]
U.S. Treasury securities, net	$ (5,810)	$ (6,224)
US Treasury Securities [Member]
Derivative [Line Items]
Weighted Average Yield Percentage	2.66%

XML

Derivative and Other Hedging Instruments (TBA Securities by Coupon and Issuer) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Document Period End Date	Mar. 31, 2019
TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ (6,822)	$ (7,152)
Cost Basis	(6,885)	(7,252)
Net long TBA position, at fair value	(6,955)	(7,322)
TBA, net carrying value	70	70
30 Year Maturity [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(3,443)	(3,529)
Cost Basis	(3,453)	(3,617)
Net long TBA position, at fair value	(3,498)	(3,649)
TBA, net carrying value	45	32
30 Year Maturity [Member] | 3.0% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(903)	(1,028)
Cost Basis	(886)	(981)
Net long TBA position, at fair value	(899)	(1,003)
TBA, net carrying value	13	22
30 Year Maturity [Member] | 3.5% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(3,084)
Cost Basis	(3,095)
Net long TBA position, at fair value	(3,125)
TBA, net carrying value	30	(34)
30 Year Maturity [Member] | 4.0% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount		(3,030)
Cost Basis		(3,073)
Net long TBA position, at fair value		(3,089)
TBA, net carrying value	(16)	16
30 Year Maturity [Member] | 4.5% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(2,604)	(2,450)
Cost Basis	(2,694)	(2,506)
Net long TBA position, at fair value	(2,712)	(2,534)
TBA, net carrying value	18	28
30 Year Maturity [Member] | Short [Member] | 3.5% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount		(2,979)
Cost Basis		(2,943)
Net long TBA position, at fair value		(2,977)
30 Year Maturity [Member] | Short [Member] | 4.0% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(3,148)
Cost Basis	(3,222)
Net long TBA position, at fair value	(3,238)
15 Year Maturity [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(3,379)	(3,623)
Cost Basis	(3,432)	(3,635)
Net long TBA position, at fair value	(3,457)	(3,673)
TBA, net carrying value	25	38
15 Year Maturity [Member] | 3.0% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(327)	(567)
Cost Basis	(328)	(557)
Net long TBA position, at fair value	(329)	(566)
TBA, net carrying value	1	9
15 Year Maturity [Member] | 3.5% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(1,969)	(1,706)
Cost Basis	(1,996)	(1,708)
Net long TBA position, at fair value	(2,013)	(1,726)
TBA, net carrying value	17	18
15 Year Maturity [Member] | 4.0% Coupon [Member] | TBA and Forward Settling Agency Securities [Member]
Derivative [Line Items]
Derivative, Notional Amount	(1,083)	(1,350)
Cost Basis	(1,108)	(1,370)
Net long TBA position, at fair value	(1,115)	(1,381)
TBA, net carrying value	$ 7	$ 11

XML

Derivative and Other Hedging Instruments (Effect Of Derivative Instruments Not Designated As Hedges On Comprehensive Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	$ (996)	$ 736
Interest Rate Swaption [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(3,500)
Additions	0	(1,100)
Settlement, Expirations or Exercise	950	1,000
Notional Amount	(2,550)
Amount Gain/(Loss) Recognized in Income on Derivatives	(27)	91
TBA and Forward Settling Agency Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(7,152)	(15,474)
Additions	(18,442)	(43,669)
Settlement, Expirations or Exercise		45,507
Notional Amount	(6,822)	(13,636)
Amount Gain/(Loss) Recognized in Income on Derivatives	83	(292)
Derivative, Notional Amount	(6,822)		$ (7,152)
Purchases Of TBAs And Forward Settling Agency Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Settlement, Expirations or Exercise	18,772
Interest Rate Swap [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(51,625)
Additions	(5,350)	(3,150)
Settlement, Expirations or Exercise	8,800	1,600
Notional Amount	(48,175)
Amount Gain/(Loss) Recognized in Income on Derivatives	(596)	663
US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	(31)	62
Not Designated as Hedging Instrument [Member] | Interest Rate Swaption [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(2,550)
Derivative, Notional Amount		(6,750)	(3,500)	$ (6,650)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(48,175)
Derivative, Notional Amount		(45,250)	(51,625)	(43,700)
Short [Member] | US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(21,345)	(10,699)
Additions	4,770	(662)
Settlement, Expirations or Exercise	(7,380)	563
Notional Amount	(18,735)	(10,798)
Amount Gain/(Loss) Recognized in Income on Derivatives	(425)	212
Long [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Debt Securities, Trading, and Equity Securities, FV-NI	120
Long [Member] | US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Amount Gain/(Loss) Recognized in Income on Derivatives	0	0
Debt Securities, Trading, and Equity Securities, FV-NI		225	$ 45	$ 0
Trading Securities Added During the Period	405	959
Notional Amount Of Trading Securities Settlement Expiration During The Period	(330)	(734)
Future [Member] | Short [Member] | US Treasury Securities [Member]
Changes in Derivative and Other Hedge Portfolio [Roll Forward]
Notional Amount	(1,650)	(2,910)
Additions	1,650	(2,909)
Settlement, Expirations or Exercise	(1,650)	3,439
Notional Amount	$ (1,650)	$ (2,380)

XML

Pledged Assets (Narrative) (Details)	Mar. 31, 2019
Pledged Assets [Abstract]
Risk Of Repurchase Agreement To Stockholders Equity	4.00%

XML

Pledged Assets Repurchase Agreements with Counterparties Greater than or Equal to 5% of Equity at Risk (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) days	Dec. 31, 2018 USD ($) days
Repurchase Agreements with Counterparties Greater than or equal to 5% of Equity at Risk [Line Items]
Document Period End Date	Mar. 31, 2019
Securities Sold under Agreements to Repurchase | $	$ 86,685	$ 75,717
Risk Of Repurchase Agreement To Stockholders Equity	4.00%
Weighted Average Days to Maturity | days	81	49
FICC [Member]
Repurchase Agreements with Counterparties Greater than or equal to 5% of Equity at Risk [Line Items]
Risk Of Repurchase Agreement To Stockholders Equity	7.00%

XML

Pledged Assets (Assets Pledged as Collateral) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	$ 89,966	$ 79,182
Document Period End Date	Mar. 31, 2019
Retained Interests in Consolidated VIE's Pledged as Collateral Under Repurchase Agreements	$ 161	163
Accrued interest on pledged securities	280	248
Restricted cash and cash equivalents	517	599
Total Fair Value of Securities Pledged and Accrued Interest	92,097
Total Fair Value Of Agency Securities Pledged And Accrued Interest		81,210
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	89,779	78,997
Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	174	174
Accrued interest on pledged securities		1
Restricted cash and cash equivalents	442	522
Total Fair Value of Securities Pledged and Accrued Interest	617
Total Fair Value Of Agency Securities Pledged And Accrued Interest		697
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	278	246
Total Fair Value of Securities Pledged and Accrued Interest	90,936
Total Fair Value Of Agency Securities Pledged And Accrued Interest		79,943
Variable Interest Entity, Primary Beneficiary [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	425	436
Accrued interest on pledged securities	1	1
Total Fair Value of Securities Pledged and Accrued Interest	426
Total Fair Value Of Agency Securities Pledged And Accrued Interest		437
Under Prime Broker Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	118	133
Accrued interest on pledged securities	0	0
Total Fair Value of Securities Pledged and Accrued Interest	118
Total Fair Value Of Agency Securities Pledged And Accrued Interest		133
Includes Sold But Not Yet Settled Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	90,496	79,740
Credit Risk Transfer Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	142	141
Credit Risk Transfer Securities [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	142	141
Credit Risk Transfer Securities [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	0	0
Non-Agency [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	45	45
Non-Agency [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	45	45
Non-Agency [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	0	0
US Treasury Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	617	437
US Treasury Securities [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	617	437
US Treasury Securities [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	0	0
Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Accrued interest on pledged securities	1
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted cash and cash equivalents	75	77
Under Prime Broker Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted cash and cash equivalents	0	0
Excluding Cash Received [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted cash and cash equivalents	$ 517	$ 599

XML

Pledged Assets (Securities Pledged as Collateral) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets and Liabilities [Line Items]
Document Period End Date	Mar. 31, 2019
Retained Interests in Consolidated VIE's Pledged as Collateral Under Repo	$ 161	$ 163
Security Owned and Pledged as Collateral, Fair Value	89,966	79,182
Agency Securities Pledged As Collateral Amortized Cost	89,806	80,386
Agency Securities Pledged As Collateral Accrued Interest	278	247
Maturity Less than 30 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	45,947	49,944
Agency Securities Pledged As Collateral Amortized Cost	45,673	50,654
Agency Securities Pledged As Collateral Accrued Interest	143	156
Maturity 31 To 59 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	10,792	14,586
Agency Securities Pledged As Collateral Amortized Cost	10,758	14,810
Agency Securities Pledged As Collateral Accrued Interest	34	46
Maturity 60 To 90 Days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	17,282	7,770
Agency Securities Pledged As Collateral Amortized Cost	17,267	7,843
Agency Securities Pledged As Collateral Accrued Interest	53	24
Maturity over 90 days [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	15,945	6,882
Agency Securities Pledged As Collateral Amortized Cost	16,108	7,079
Agency Securities Pledged As Collateral Accrued Interest	48	21
Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	89,779	78,997
Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	174	174
Credit Risk Transfer Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	142	141
Credit Risk Transfer Securities [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	142	141
Credit Risk Transfer Securities [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	0	0
US Treasury Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	617	437
Securities Received as Collateral, Amount Repledged and Sold	496	437
US Treasury Securities [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	617	437
US Treasury Securities [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	0	0
Non-Agency [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	45	45
Non-Agency [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	45	45
Non-Agency [Member] | Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Security Owned and Pledged as Collateral, Fair Value	$ 0	$ 0

XML

Pledged Assets (Assets Pledged from Counterparties) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets and Liabilities [Line Items]
Document Period End Date	Mar. 31, 2019
Obligation to Return Securities Borrowed Under Reverse Repurchase Agreements at Fair Value	$ 19,275	$ 21,431
Restricted Cash and Cash Equivalents	517	599
Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	49	129
Restricted Cash and Securities Pledged	20,489	22,077
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	30	37
Securities Sold under Agreements to Repurchase [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	30	37
Derivative [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Securities Pledged	59	164
US Treasury Securities [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	20,440	21,948
Reverse Repurchase Agreements [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	20,400	21,876
Reverse Repurchase Agreements [Member] | US Treasury Securities [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	20,400	21,876
Derivative [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	442	522
Derivative [Member] | US Treasury Securities [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment	10	35
Derivative [Member] | Assets Pledged to Us [Member]
Offsetting Assets and Liabilities [Line Items]
Restricted Cash and Cash Equivalents	$ 49	$ 129

XML

Pledged Assets (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Offsetting Assets and Liabilities [Line Items]
Document Period End Date	Mar. 31, 2019
Collateral Received	$ (3,131)
Assets [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	20,683	$ 22,086
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	20,683	22,086
Financial Instruments	(17,375)	(17,276)
Collateral Received		(4,733)
Net Amount	177	77
Assets [Member] | ERROR in label resolution.
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	162	163
Net Amounts of Assets Presented in the Consolidated Balance Sheets	162	163
Financial Instruments	(1)	0
Collateral Received	(59)	(158)
Net Amount	102	5
Assets [Member] | TBA and Forward Settling Agency Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	91	110
Net Amounts of Assets Presented in the Consolidated Balance Sheets	91	110
Financial Instruments	(21)	(40)
Net Amount	70	70
Assets [Member] | Reverse Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Net Amount	5	2
Liability [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	86,707	75,757
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	86,707	75,757
Financial Instruments	(17,375)	(17,276)
Collateral Received	(69,332)	(58,481)
Net Amount	0
Liability [Member] | Repurchase Agreements [Member]
Offsetting Assets and Liabilities [Line Items]
Net Amount	0	0
Liability [Member] | ERROR in label resolution.
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	1	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	1	0
Financial Instruments	(1)	0
Collateral Received	0	0
Net Amount	0	0
Liability [Member] | TBA and Forward Settling Agency Securities [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	21	40
Net Amounts of Assets Presented in the Consolidated Balance Sheets	21	40
Financial Instruments	(21)	(40)
Collateral Received	0	0
Net Amount	0	0
Reverse Repurchase Agreements [Member] | Assets [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	20,430	21,813
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	20,430	21,813
Financial Instruments	(17,353)	(17,236)
Collateral Received	(3,072)	(4,575)
Repurchase Agreements [Member] | Liability [Member]
Offsetting Assets and Liabilities [Line Items]
Gross Amounts of Recognized Assets	86,685	75,717
Gross Amount Offset in the Consolidated Balance Sheets	0
Net Amounts of Assets Presented in the Consolidated Balance Sheets	86,685	75,717
Financial Instruments	(17,353)	(17,236)
Collateral Received	$ (69,332)	$ (58,481)

XML

Fair Value Measurements (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Future [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ 31	$ 44
Interest Rate Swaption [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	11	37
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	151	126
Interest Rate Swap [Member] | Derivative liabilities, at fair value [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps	1	0
Purchases Of TBAs And Forward Settling Agency Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | TBA and Forward Settling Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TBA securities	$ 91	110
Document Period End Date	Mar. 31, 2019
Transfers between hierarchy levels	0
Agency securities	$ 93,044	82,291
Agency securities transferred to consolidated VIEs	425	436
Non-Agency Securities, at Fair Value	672	548
Financial Instruments, Owned, Other, at Fair Value	1,129	1,012
U.S. Treasury securities	121	46
TBA securities	253	273
Derivative Liability	53	84
Debt of consolidated variable interest entities, at fair value	266	275
Obligation to return securities borrowed under reverse repurchase agreements, at fair value	19,275	21,431
Interest rate swaps	253	273
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	121	46
Total liabilities	19,306	21,475
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	95,523	84,560
Total liabilities	288	315
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Sale Of TBA And Forward Settling Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ 21	$ 40

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Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding	536.3	391.3
Weighted Average Number of Fully Vested Restricted Stock Units and Performance Share Units Outstanding	0.4	0.0
Weighted Average Number of Shares Outstanding, Basic	536.7	391.3
Dilutive Securities, Effect on Basic Earnings Per Share, Options and Restrictive Stock Units	$ 0.5	$ 0.2
Weighted Average Number of Shares Outstanding, Diluted	537.2	391.5
Net Income (Loss) Available to Common Stockholders, Basic	$ 255.0	$ 415.0
Earnings Per Share, Basic	$ 0.48	$ 1.06
Earnings Per Share, Diluted	$ 0.47	$ 1.06

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Stockholders' Equity (Preferred Stock) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	May 31, 2014	Mar. 31, 2019	Dec. 31, 2018	May 05, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock B, Value, Issued		$ 169	$ 169
Preferred Stock B, Liquidation Preference, Value		$ 175	175
Document Period End Date		Mar. 31, 2019
Preferred Stock D, Value, Issued		$ 227	0
Preferred Stock D, Liquidation Preference, Value		235	0
Preferred Stock C, Value, Issued		315	315
Preferred Stock C, Liquidation Preference, Value		325	$ 325
Preferred Stock, Value, Issued		711
Preferred Stock, Liquidation Preference, Value		$ 735
Preferred Stock, Shares Authorized		10,000,000.0
Series B Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Percent Interest Per Share	0.10%
Preferred Stock, Capital Shares Reserved for Future Issuance		8,050
Preferred Stock, Dividend Rate, Percentage		7.75%
Preferred Stock, Liquidation Preference Per Share				$ 25.00
Series C Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance		13,800
Preferred Stock, Dividend Rate, Percentage		7.00%
Preferred Stock Dividend Payment Rate Variable Rate Spread		5.111%
Series D Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Capital Shares Reserved for Future Issuance		9,400
Preferred Stock, Dividend Rate, Percentage		6.875%
Preferred Stock Dividend Payment Rate Variable Rate Spread		4.30%
Depositary Share [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued		29,400,000
Depositary Share [Member] | Series B Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued		7,000,000.0
Depositary Share [Member] | Series C Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued		13,000,000.0
Depositary Share [Member] | Series D Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred Stock, Shares Issued		9,400,000

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Stockholders' Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	$ 400	$ (621)
Agency Securities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning OCI Balance	(943)	(345)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax	396	(620)
Amounts reclassified from accumulated OCI	4	(1)
Ending OCI Balance	$ (543)	$ (966)

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Stockholders' Equity (At-the-Market Offering Program) (Details) $ in Millions	Mar. 31, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	$ 660

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Subsequent Event (Details) - $ / shares		3 Months Ended
	Apr. 10, 2019	Mar. 31, 2019	Mar. 31, 2018
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.54	$ 0.54
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.18

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Label	Element	Value
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 1,520,000,000
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	$ 1,363,000,000