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Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2022
Fair Value Disclosures [Abstract]  
Fair Value of Financial Instruments Fair Value of Financial Instruments
For financial reporting purposes, we follow a fair value hierarchy established under GAAP that is used to determine the fair value of financial instruments. This hierarchy prioritizes relevant market inputs in order to determine an “exit price” at the measurement date, or the price at which an asset could be sold or a liability could be transferred in an orderly process that is not a forced liquidation or distressed sale. Level 1 inputs are observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2 inputs are observable inputs other than quoted prices for an asset or liability that are obtained through corroboration with observable market data. Level 3 inputs are unobservable inputs (e.g., our own data or assumptions) that are used when there is little, if any, relevant market activity for the asset or liability required to be measured at fair value.
In certain cases, inputs used to measure fair value fall into different levels of the fair value hierarchy. In such cases, the level at which the fair value measurement falls is determined based on the lowest level input that is significant to the fair value measurement. Our assessment of the significance of a particular input requires judgment and considers factors specific to the asset or liability being measured.
The following table presents the carrying values and estimated fair values of assets and liabilities that are required to be recorded or disclosed at fair value at December 31, 2022 and 2021.

Table 5.1 – Carrying Values and Fair Values of Assets and Liabilities
December 31, 2022December 31, 2021
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
(In Thousands)
Assets
Residential loans, held-for-sale at fair value$780,781 $780,781 $1,845,248 $1,845,248 
Residential loans, held-for-investment, at fair value4,832,407 4,832,407 5,747,150 5,747,150 
Business purpose loans, held-for-sale, at fair value364,073 364,073 358,309 358,309 
Business purpose loans, held-for-investment, at fair value4,968,513 4,968,513 4,432,680 4,432,680 
Consolidated Agency multifamily loans, at fair value424,551 424,551 473,514 473,514 
Real estate securities, at fair value240,475 240,475 377,411 377,411 
Servicer advance investments (1)
269,259 269,259 350,923 350,923 
MSRs (1)
25,421 25,421 12,438 12,438 
Excess MSRs (1)
39,035 39,035 44,231 44,231 
HEIs403,462 403,462 192,740 192,740 
Other investments (1)
6,155 6,155 12,663 12,663 
Cash and cash equivalents258,894 258,894 450,485 450,485 
Restricted cash70,470 70,470 80,999 80,999 
Derivative assets20,830 20,830 26,467 26,467 
REO (2)
6,455 4,185 36,126 39,272 
Margin receivable (2)
13,802 13,802 7,269 7,269 
Liabilities
Short-term debt (3)
$1,853,664 $1,853,664 $2,177,362 $2,177,362 
Margin payable (4)
5,944 5,944 24,368 24,368 
Guarantee obligations (4)
6,344 4,738 7,459 7,133 
HEI securitization non-controlling interest22,329 22,329 17,035 17,035 
Derivative liabilities16,855 16,855 3,317 3,317 
ABS issued net
at fair value7,424,132 7,424,132 8,843,147 8,843,147 
at amortized cost562,620 524,768 410,410 410,471 
Other long-term debt, net (5)
1,077,200 1,069,946 988,483 989,570 
Convertible notes, net (5)
693,473 638,049 513,629 537,300 
Trust preferred securities and subordinated notes, net (5)
138,767 83,700 138,721 97,650 
(1)These investments are included in Other investments on our consolidated balance sheets.
(2)These assets are included in Other assets on our consolidated balance sheets.
(3)Short-term debt excludes short-term convertible notes, which are included below under "Convertible notes, net."
(4)These liabilities are included in Accrued expenses and other liabilities on our consolidated balance sheets.
(5)These liabilities are primarily included in Long-Term debt, net on our consolidated balance sheets. Convertible notes, net also includes convertible notes classified as short-term debt. See Note 14 for more information on Short-term debt.
During the years ended December 31, 2022 and 2021, we elected the fair value option for $5 million and $59 million of securities, respectively, $3.70 billion and $12.92 billion of residential loans (principal balance), respectively, and $2.90 billion and $2.22 billion of business purpose loans (principal balance), respectively. Additionally, during the years ended December 31, 2022 and 2021, we elected the fair value option for $248 million and $155 million of HEIs, respectively, and $9 million and $15 million of Other Investments, respectively. We anticipate electing the fair value option for all future purchases of residential and business purpose loans that we intend to sell to third parties or transfer to securitizations, as well as for certain securities we purchase, including IO securities, fixed-rate securities rated investment grade or higher and HEIs.
The following table presents the assets and liabilities that are reported at fair value on our consolidated balance sheets on a recurring basis at December 31, 2022 and 2021, as well as the fair value hierarchy of the valuation inputs used to measure fair value.
Table 5.2 – Assets and Liabilities Measured at Fair Value on a Recurring Basis
December 31, 2022Carrying ValueFair Value Measurements Using
(In Thousands)Level 1Level 2Level 3
Assets
Residential loans$5,613,157 $— $— $5,613,157 
Business purpose loans5,332,586 — — 5,332,586 
Consolidated Agency multifamily loans424,551 — — 424,551 
Real estate securities240,475 — — 240,475 
Servicer advance investments269,259 — — 269,259 
MSRs25,421 — — 25,421 
Excess MSRs39,035 — — 39,035 
HEIs403,462 — — 403,462 
Other investments6,155 — — 6,155 
Derivative assets20,830 5,869 14,625 336 
Liabilities
HEI securitization non-controlling interest$22,329 $— $— $22,329 
Derivative liabilities16,855 16,841 — 14 
ABS issued7,424,132 — — 7,424,132 
Table 5.2 – Assets and Liabilities Measured at Fair Value on a Recurring Basis (continued)
December 31, 2021Carrying
Value
Fair Value Measurements Using
(In Thousands)Level 1Level 2Level 3
Assets
Residential loans$7,592,398 $— $— $7,592,398 
Business purpose loans4,790,989 — — 4,790,989 
Consolidated Agency multifamily loans473,514 — — 473,514 
Real estate securities377,411 — — 377,411 
Servicer advance investments350,923 — — 350,923 
MSRs12,438 — — 12,438 
Excess MSRs44,231 — — 44,231 
HEIs192,740 — — 192,740 
Other Investments17,574 — — 17,574 
Derivative assets26,467 2,906 18,928 4,633 
Liabilities
HEI securitization non-controlling interest$17,035 $— $— $17,035 
Derivative liabilities3,317 1,563 1,251 503 
ABS issued8,843,147 — — 8,843,147 

The following table presents additional information about Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2022 and 2021.
Table 5.3 – Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets
Residential LoansBusiness
Purpose
Loans
Consolidated Agency Multifamily LoansTrading SecuritiesAFS
Securities
Servicer Advance InvestmentsExcess MSRsHEIsMSRs and Other Investments
(In Thousands)
Beginning balance - December 31, 2021$7,592,398 $4,790,989 $473,514 $170,619 $206,792 $350,923 $44,231 $192,740 $25,101 
Acquisitions3,692,104 181,814 — 5,006 10,000 — — 248,218 8,638 
Originations— 2,715,817 — — — — — — — 
Sales(3,830,318)(495,472)— (31,729)— — — — (3,299)
Principal paydowns(866,474)(1,324,640)(7,975)(1,347)(31,390)(70,589)— (42,744)(158)
Gains (losses) in net income (loss), net(970,241)(531,947)(40,987)(34,220)13,660 (11,075)(5,196)5,248 9,873 
Unrealized losses in OCI, net— — — — (66,916)— — — — 
Other settlements, net (1)
(4,312)(3,975)— — — — — — (8,579)
Ending balance - December 31, 2022$5,613,157 $5,332,586 $424,552 $108,329 $132,146 $269,259 $39,035 $403,462 $31,576 
Table 5.3 – Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (continued)
Liabilities
Derivatives (2)
HEI Securitization Non-Controlling InterestABS
Issued
(In Thousands)
Beginning balance - December 31, 2021$4,130 $17,035 $8,843,147 
Acquisitions— — 1,205,289 
Principal paydowns— — (1,394,000)
Gains (losses) in net income (loss), net(55,209)5,294 (1,230,304)
Other settlements, net (1)
51,401 — — 
Ending balance - December 31, 2022$322 $22,329 $7,424,132 
 Assets
(In Thousands)Residential
Loans
Business Purpose LoansConsolidated Agency Multifamily LoansTrading
Securities
AFS
Securities
Servicer Advance InvestmentsExcess MSRs 
HEIs
MSRs and Other Investments
Beginning balance - December 31, 2020$4,249,014 $4,136,353 $492,221 $125,667 $218,458 $231,489 $34,418 $42,440 $27,662 
Acquisitions13,139,907 136,685 — 58,917 19,100 196,583 17,830 155,023 15,215 
Originations— 2,150,539 — — — — — — — 
Sales(8,449,328)(211,113)— (34,802)(4,785)— — — — 
Principal paydowns(1,360,649)(1,307,566)(7,639)(2,713)(57,953)(76,223)— (19,395)(14,751)
Gains (losses) in net income, net16,688 (77,357)(11,068)23,550 40,735 (926)(8,017)13,774 (2,846)
Unrealized gains in OCI, net— — — — (8,763)— — — — 
Other settlements, net (1)
(3,234)(36,552)— — — — — 898 (179)
Ending balance - December 31, 2021$7,592,398 $4,790,989 $473,514 $170,619 $206,792 $350,923 $44,231 $192,740 $25,101 
 Liabilities
(In Thousands)
Derivatives (2)
HEI Securitization Non-Controlling InterestABS
 Issued
Beginning balance - December 31, 2020$14,450 $— $6,900,362 
Acquisitions— 16,639 4,202,070 
Principal paydowns— — (1,922,313)
Gains (losses) in net income, net10,437 396 (336,972)
Other settlements, net (1)
(20,757)— — 
Ending balance - December 31, 2021$4,130 $17,035 $8,843,147 
(1)     Other settlements, net for residential and business purpose loans represents the transfer of loans to REO, for derivatives, represents the transfer of the fair value of loan purchase and interest rate lock commitments at the time loans are acquired to the basis of residential and business purpose loans, and for MSRs and other investments, primarily represents an investment that was exchanged into a new instrument that is no longer measured at fair value on a recurring basis.
(2)     For the purpose of this presentation, derivative assets and liabilities, which consist of loan purchase commitments and interest rate lock commitments, are presented on a net basis.
The following table presents the portion of fair value gains or losses included in our consolidated statements of income (loss) that were attributable to Level 3 assets and liabilities recorded at fair value on a recurring basis and held at December 31, 2022, 2021, and 2020. Gains or losses incurred on assets or liabilities sold, matured, called, or fully written down during the years ended December 31, 2022, 2021, and 2020 are not included in this presentation.
Table 5.4 – Portion of Net Fair Value Gains (Losses) Attributable to Level 3 Assets and Liabilities Still Held at December 31, 2022, 2021, and 2020 Included in Net Income
Included in Net Income (Loss)
Years Ended December 31,
(In Thousands)202220212020
Assets
Residential loans at Redwood$(43,019)$5,886 $1,138 
Business purpose loans(31,927)9,444 9,420 
Net investments in consolidated Sequoia entities (1)
(25,563)12,455 (14,646)
Net investments in consolidated Freddie Mac SLST entities (1)
(76,811)62,124 (21,220)
Net investments in consolidated Freddie Mac K-Series entities (1)
110 11,599 (9,309)
Net investments in consolidated CAFL Term entities (1)
(34,899)8,198 (37,062)
Net investment in consolidated HEI securitization entity (1)
8,210 614 — 
Trading securities(34,027)738 (83,327)
Available-for-sale securities(2,540)— (388)
Servicer advance investments(11,076)(926)(8,902)
MSRs9,804 629 (17,545)
Excess MSRs(5,196)(8,017)(8,302)
HEIs at Redwood(670)212 (1,884)
Other investments(901)(6)(285)
Loan purchase and interest rate lock commitments336 4,633 15,027 
Liabilities
Non-controlling interest in consolidated HEI entity$(5,294)$(396)$— 
Loan purchase commitments$(14)$(503)$(577)
(1)    Represents the portion of net fair value gains or losses included in our consolidated statements of income (loss) related to securitized loans, securitized HEIs, and the associated ABS issued at our consolidated securitization entities held at December 31, 2022, 2021, and 2020, which, netted together represent the change in value of our investments at the consolidated VIEs, under CFE election, excluding REO.
The following table presents information on assets recorded at fair value on a non-recurring basis at December 31, 2022 and 2021. This table does not include the carrying value and gains or losses associated with the asset types below that were not recorded at fair value on our consolidated balance sheets at December 31, 2022 and 2021.
Table 5.5 – Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Gain (Loss) for
Year Ended
December 31, 2022Carrying
Value
Fair Value Measurements Using
(In Thousands)Level 1Level 2Level 3December 31, 2022
Assets
Strategic Investments$17,600 $— $— $17,600 $9,965 
Gain (Loss) for
Year Ended
December 31, 2021Carrying
Value
Fair Value Measurements Using
(In Thousands)Level 1Level 2Level 3December 31, 2021
Assets
REO$588 $— $— $588 $(217)
The following table presents the net market valuation gains and losses recorded in each line item of our consolidated statements of income (loss) for the years ended December 31, 2022, 2021, and 2020.
Table 5.6 – Market Valuation Gains and Losses, Net
Years Ended December 31,
(In Thousands)202220212020
Mortgage Banking Activities, Net
Residential loans held-for-sale, at fair value$(77,192)$73,332 $(15,477)
Residential loan purchase and commitments(54,484)10,401 56,761 
BPL term loans held-for-sale, at fair value(91,025)63,206 82,169 
BPL term loan interest rate lock commitments(666)666 341 
BPL bridge loans3,026 8,253 (4,998)
Trading securities (1)
4,249 (352)(4,535)
Risk management derivatives, net157,444 41,060 (47,779)
Total mortgage banking activities, net (2)
$(58,648)$196,566 $66,482 
Investment Fair Value Changes, Net
Residential loans held-for-investment at Redwood (called Sequoia loans)$(16,651)$2,812 $(93,314)
Business purpose loans held-for-investment(7,271)(65)(31,435)
Trading securities(38,471)23,935 (226,196)
Servicer advance investments(11,075)(925)(8,901)
Excess MSRs(5,196)(8,017)(8,302)
Net investments in Legacy Sequoia entities (3)
(1,302)(1,558)(1,513)
Net investments in Sequoia entities (3)
(23,818)14,176 (13,244)
Net investments in Freddie Mac SLST entities (3)
(76,777)62,374 (21,160)
Net investment in Freddie Mac K-Series entity (3)
110 11,599 (81,039)
Net investments in CAFL Term entities (3)
(34,899)10,271 (36,754)
Net investments in HEI securitization entities (3)
2,915 218 — 
HEIs at Redwood(202)13,207 (1,883)
Other investments13,468 (366)(5,167)
Risk management derivatives, net26,152 — (59,142)
Credit (losses) recoveries on AFS securities(2,540)388 (388)
Total investment fair value changes, net$(175,557)$128,049 $(588,438)
Other Income
MSRs$8,560 $(3,182)$(33,409)
Other(1,541)— — 
Risk management derivatives, net— — 13,966 
Total other income (4)
$7,019 $(3,182)$(19,443)
Total Market Valuation Gains (Losses), Net$(227,186)$321,433 $(541,399)
(1)Represents fair value changes on trading securities that are being used along with risk management derivatives to manage the market risks associated with our residential mortgage banking operations.
(2)Mortgage banking activities, net presented above does not include fee income from loan originations or acquisitions, provisions for repurchases, and other expenses that are components of Mortgage banking activities, net presented on our consolidated statements of income (loss), as these amounts do not represent market valuation changes.
(3)Includes changes in fair value of the residential loans held-for-investment, securitized HEIs, REO and the ABS issued at the entities, which netted together represent the change in value of our investments at the consolidated VIEs accounted for under the CFE election.
(4)Other income presented above does not include net MSR fee income or provisions for repurchases of MSRs, as these amounts do not represent market valuation adjustments.
Valuation Policy
We maintain policies that specify the methodologies we use to value different types of financial instruments. Significant changes to the valuation methodologies are reviewed by members of senior management to confirm the changes are appropriate and reasonable. Valuations based on information from external sources are performed on an instrument-by-instrument basis with the resulting amounts analyzed individually against internal calculations as well as in the aggregate by product type classification. Initial valuations are performed by our portfolio management groups using the valuation processes described below. Our finance department then independently reviews all fair value estimates to ensure they are reasonable. Finally, members of senior management review all fair value estimates, including an analysis of the methodology and valuation changes from prior reporting periods.
Valuation Process
We estimate fair values for financial assets or liabilities based on available inputs observed in the marketplace as well as unobservable inputs. We primarily use two pricing valuation techniques: market comparable pricing and discounted cash flow analysis. Market comparable pricing is used to determine the estimated fair value of certain instruments by incorporating known inputs and performance metrics, such as observed prepayment rates, delinquencies, severities, credit support, recent transaction prices, pending transactions, or prices of other similar instruments. Discounted cash flow analysis techniques generally consist of developing an estimate of future cash flows that are expected to occur over the life of an instrument and then discounting those cash flows at a rate of return that results in an estimate of fair value. After considering all available indications of the appropriate rate of return that market participants would require, we consider the reasonableness of the range indicated by the results to determine an estimate that is most representative of fair value. We also consider counterparty credit quality and risk as part of our fair value assessments.
The following table provides quantitative information about the significant unobservable inputs used in the valuation of our Level 3 assets and liabilities measured at fair value.
Table 5.7 – Fair Value Methodology for Level 3 Financial Instruments
December 31, 2022Fair
Value
Input Values
(Dollars in Thousands, except Input Values)Unobservable InputRange
Weighted
Average (1)
Assets
Residential loans, at fair value:
Jumbo fixed-rate loans$643,845 Whole loan spread to swap rate252 -252 bps252 bps
Called loan dollar price$91 -$91 $91 
Jumbo loans committed to sell136,905 Whole loan committed sales price$94 -$101 $94 
Loans held by Legacy Sequoia (2)
184,932 Liability priceN/AN/A
Loans held by Sequoia (2)
3,190,417 Liability priceN/AN/A
Loans held by Freddie Mac
SLST (2)
1,457,058 Liability priceN/AN/A
Business purpose loans:
BPL term loans358,791 Senior credit spread175 -275 bps225 bps
Subordinate credit spread225 -962 bps431 bps
Senior credit support36 -36 %36 %
IO discount rate-10 %%
Prepayment rate (annual CPR)-%%
Whole loan spread275 -550 bps361 bps
BPL term loans held by CAFL2,944,984 Liability priceN/AN/A
BPL bridge loans2,028,811 Whole loan discount rate-15 %10 %
Senior credit spread310 -310 bps310 bps
Subordinate credit spread360 -1,150 bps665 bps
Senior credit support43 -43 %43 %
Prepayment rate (annual CPR)— -— %— %
Multifamily loans held by Freddie Mac K-Series (2)
424,551 Liability priceN/AN/A
Trading and AFS securities240,475 Discount rate-18 %10  %
Prepayment rate (annual CPR)-65 %10  %
Default rate— -14 %0.5  %
Loss severity— -50 %26  %
CRT dollar price$72 -$93 $84 
HEIs270,835 Discount rate10 -10 %10 %
Prepayment rate (annual CPR)-23 %16 %
Home price appreciation(7)-%%
HEIs held by HEI securitization entity132,627 Discount RateN/AN/A
Servicer advance investments269,259 Discount rate-%%
Prepayment rate (annual CPR)14 -30 %14 %
Expected remaining life (3)
5-5yrs5yrs
Mortgage servicing income— -18 bpsbps
Table 5.7 – Fair Value Methodology for Level 3 Financial Instruments (continued)
December 31, 2022Fair
Value
Input Values
(Dollars in Thousands, except Input Values)Unobservable InputRangeWeighted
Average
Assets (continued)
MSRs$25,421 Discount rate11 -22 %11 %
Prepayment rate (annual CPR)-28 %%
Per loan annual cost to service$93 -$93 $93 
Excess MSRs39,035 Discount rate13 -19 %18 %
Prepayment rate (annual CPR)10 -100 %18 %
Excess mortgage servicing amount-19 bps11 bps
Residential loan purchase commitments, net322 Whole loan spread to swap rate252 -252 bps252 bps
Pull-through rate48 -100 %94 %
Committed sales price$101 $101 $101 
Liabilities
ABS issued (2)
At consolidated Sequoia entities3,155,300 Discount rate-18 % %
Prepayment rate (annual CPR)-23 %10  %
Default rate— -14 % %
Loss severity25 -50 %32  %
At consolidated CAFL Term entities2,638,183 Discount rate-23 %%
Prepayment rate (annual CPR)— -%0.2 %
Default rate-23 %%
Loss severity27 -40 %30 %
At consolidated Freddie Mac SLST entities1,137,154 Discount rate-16 % %
Prepayment rate (annual CPR)-% %
Default rate13 -14 %14  %
Loss severity35 -35 %35  %
At consolidated Freddie Mac K-Series entities (4)
392,785 Discount rate-10 %%
At consolidated HEI entities(4)
100,710 Discount rate-15 %10 %
Prepayment rate (annual CPR)20 -20 %20 %
Home price appreciation(7)-%%
(1)The weighted average input values for all loan types are based on unpaid principal balance. The weighted average input values for all other assets and liabilities are based on relative fair value.
(2)The fair value of the loans and HEIs held by consolidated entities is based on the fair value of the ABS issued by these entities, and the securities and other investments we own in those entities, which we determined were more readily observable, in accordance with accounting guidance for collateralized financing entities. At December 31, 2022, the fair value of securities we owned at the consolidated Sequoia, CAFL Term, Freddie Mac SLST, Freddie Mac K-Series, and HEI securitization entities was $219 million, $304 million, $323 million, $32 million, and $13 million, respectively.
(3)Represents the estimated average duration of outstanding servicer advances at a given point in time (not taking into account new advances made with respect to the pool).
Determination of Fair Value
A description of the instruments measured at fair value as well as the general classification of such instruments pursuant to the Level 1, Level 2, and Level 3 valuation hierarchy is listed herein. We generally use both market comparable information and discounted cash flow modeling techniques to determine the fair value of our Level 3 assets and liabilities. Use of these techniques requires determination of relevant inputs and assumptions, some of which represent significant unobservable inputs as indicated in the preceding table. Accordingly, a significant increase or decrease in any of these inputs – such as anticipated credit losses, prepayment rates, interest rates, or other valuation assumptions – in isolation would likely result in a significantly lower or higher fair value measurement.
Residential loans, business purpose loans, multifamily loans and HEI at consolidated entities
We have elected to account for most of our consolidated securitization entities as collateralized financing entities in accordance with GAAP. A CFE is a variable interest entity that holds financial assets and issues beneficial interests in those assets, and these beneficial interests have contractual recourse only to the related assets of the CFE. Accounting guidance for CFEs allows companies to elect to measure both the financial assets and financial liabilities of a CFE using the more observable of the fair value of the financial assets or fair value of the financial liabilities. Pursuant to this guidance, we use the fair value of the ABS issued by the CFEs (which we determined to be more observable) to determine the fair value of the loans held at these entities, whereby the net assets we consolidate in our financial statements related to these entities represent the estimated fair value of our retained interests in the CFEs. 
Residential loans at Redwood
Estimated fair values for residential loans are determined using models that incorporate various pricing inputs, including information derived from whole loan sales and securitizations that have occurred in the market. Certain significant inputs in these models are considered unobservable and are therefore Level 3 in nature. Significant pricing inputs obtained from market whole loan transaction activity include indicative spreads to indexed TBA prices and indexed swap rates (Level 3). Significant pricing inputs obtained from market securitization activity include indicative spreads to indexed TBA prices and swap rats for senior and subordinate MBS, IO MBS discount rates, senior credit support levels, and assumed future prepayment rates (Level 3). These assets would generally decrease in value based upon an increase in the credit spread, prepayment speed, or credit support assumptions.
Business purpose loans
Estimated fair values for business purpose loans are determined using models that incorporate various pricing inputs, including information derived from whole loan sales and securitizations that have occurred in the market, and for most of our bridge loans, market yields are used to discount expected cash flows. Certain significant inputs in these models are considered unobservable and are therefore Level 3 in nature. Significant pricing inputs obtained from market securitization activity include indicative spreads to indexed treasury rates for senior and subordinate MBS, IO MBS discount rates, senior credit support levels, and assumed future prepayment rates (Level 3). Significant pricing inputs obtained from market whole loan transaction activity include indicative spreads to indexed treasury prices and swap rates (Level 3). These assets would generally decrease in value based upon an increase in the credit spread, prepayment speed, or credit support assumptions. Prices for most of our BPL bridge loans are determined using discounted cash flow modeling, which incorporates a primary significant unobservable input of market discount rate. Cash flows for performing loans are generally based on contractual loan terms. Delinquent loans, are generally valued at a dollar price that is informed by various market data, including the estimated fair value of the collateral securing the loan, for which we typically receive third-party appraisals (Level 3). These assets would generally decrease in value based upon an increase in the discount rate or a decrease in the value of the underlying collateral.
Real estate securities
Real estate securities include residential, multifamily, and other mortgage-backed securities that are generally illiquid in nature and trade infrequently. Significant inputs in the valuation analysis for these assets are predominantly Level 3 in nature, due to the lack of readily available market quotes and related inputs. For real estate securities, we utilize both market comparable pricing and discounted cash flow analysis valuation techniques. Relevant market indicators that are factored into the analysis include bid/ask spreads, the amount and timing of credit losses, interest rates, and collateral prepayment rates. Estimated fair values are based on applying the market indicators to generate discounted cash flows (Level 3). These cash flow models use significant unobservable inputs such as a discount rate, prepayment rate, default rate and loss severity. The estimated fair value of our securities would generally decrease based upon an increase in discount rate, default rates, loss severities, or a decrease in prepayment rates.
Derivative assets and liabilities
Our derivative instruments include swaps, swaptions, TBAs, interest rate futures, loan purchase commitments, and forward sale commitments. Fair values of derivative instruments are determined using quoted prices from active markets, when available, or from valuation models and are supported by valuations provided by dealers active in derivative markets. Fair values of TBAs and interest rate futures are generally obtained using quoted prices from active markets (Level 1). Our derivative valuation models for swaps and swaptions require a variety of inputs, including contractual terms, market prices, yield curves, credit curves, measures of volatility, prepayment rates, and correlations of certain inputs. Model inputs can generally be verified and model selection does not involve significant management judgment (Level 2). LPC, and IRLC fair values for residential jumbo and BPL term loans are estimated based on the estimated fair values of the underlying loans (as described in "Residential loans at Redwood" and "Business purpose loans" above). In addition, fair values for LPCs and IRLCs are estimated based on the probability that the mortgage loan will be purchased or originated (the "Pull-through rate") (Level 3).
Servicer advance investments
Estimated fair values for servicer advance investments are determined through internal pricing models that estimate future cash flows and utilize certain significant inputs that are considered unobservable and are therefore Level 3 in nature. Our estimations of cash flows include the combined cash flows of all of the components that comprise the servicer advance investments: existing advances, the requirement to purchase future advances, the recovery of advances, and the right to a portion of the associated mortgage servicing fee ("mortgage servicing income"). The valuation technique is based on discounted cash flows. Significant inputs used in the valuations include prepayment rate (of the loans underlying the investments), mortgage servicing income, servicer advance WAL (the weighted-average expected remaining life of servicer advances), and discount rate. These assets would generally decrease in value based upon an increase in prepayment rates, an increase in servicer advance WAL, an increase in discount rate, or a decrease in mortgage servicing income.
MSRs
MSRs include the rights to service jumbo residential mortgage loans. Significant inputs in the valuation analysis are predominantly Level 3, due to the nature of these instruments and the lack of readily available market quotes. Changes in the fair value of MSRs occur primarily due to the collection/realization of expected cash flows, as well as changes in valuation inputs and assumptions. Estimated fair values are based on applying the inputs to generate the net present value of estimated future MSR income (Level 3). These discounted cash flow models utilize certain significant unobservable inputs including market discount rates, assumed future prepayment rates of serviced loans, and the market cost of servicing. An increase in these unobservable inputs would generally reduce the estimated fair value of the MSRs.
Excess MSRs
Estimated fair values for excess MSRs are determined through internal pricing models that estimate future cash flows and utilize certain significant inputs that are considered unobservable and are therefore Level 3 in nature. The valuation technique is based on discounted cash flows. Significant unobservable inputs used in the valuations include prepayment rate (of the loans underlying the investments), the amount of excess servicing income expected to be received ("excess mortgage servicing income"), and discount rate. These assets would generally decrease in value based upon an increase in prepayment rates or discount rate, or a decrease in excess mortgage servicing income.
HEI at Redwood
Estimated fair values for home equity investment contracts are determined through internal pricing models that estimate future cash flows and utilize certain significant unobservable inputs such as forecasted home price appreciation, prepayment rates and discount rate, and are therefore Level 3 in nature. The valuation technique is based on discounted cash flows. An increase in discount rate or a decrease in forecasted home price appreciation combined with a decrease in prepayment rates, would generally reduce the estimated fair value of the HEIs.
Other Investments
Certain of our Other investments (inclusive of strategic investments in early-stage start-up companies) are Level 3 financial instruments that we account for under the fair value option. These investments generally take the form of equity or debt with conversion features and do not have readily determinable fair values. We initially record these investments at cost and adjust their fair value based on observable price changes, such as follow-on capital raises or secondary sales, and will also evaluate impacts to valuation from changing market conditions and underlying business performance. As of December 31, 2022, the carrying value of these investments was $6 million.
Cash and cash equivalents
Cash and cash equivalents include cash on hand and highly liquid investments with original maturities of three months or less and money market fund investments which are generally invested in U.S. government securities and are available to us on a daily basis. Fair values equal carrying values (Level 1).
Restricted cash
Restricted cash primarily includes interest-earning cash balances related to risk-sharing transactions with the Agencies, cash held at Servicing Investment entities, and cash held at consolidated Sequoia, HEI and CAFL Bridge entities for the purpose of distribution to investors and reinvestment. Due to the short-term nature of the restrictions, fair values approximate carrying values (Level 1).
Accrued interest receivable and payable
Accrued interest receivable and payable includes interest due on our assets and payable on our liabilities. Due to the short-term nature of when these interest payments will be received or paid, fair values approximate carrying values (Level 1).
Real estate owned
Real estate owned ("REO") includes properties owned in satisfaction of foreclosed loans. Fair values are determined using available market quotes, appraisals, broker price opinions, comparable properties, or other indications of value (Level 3).
Margin receivable
Margin receivable reflects cash collateral we have posted with our various derivative and debt counterparties as required to satisfy margin requirements. Fair values approximate carrying values (Level 2).
Short-term debt
Short-term debt includes our credit facilities for residential and business purpose loans and real estate securities as well as non-recourse short-term borrowings used to finance servicer advance investments, promissory notes and the current portion of long-term debt. As these borrowings are secured and subject to margin calls and as the rates on these borrowings reset frequently to market rates, we believe that carrying values approximate fair values (Level 2).
ABS issued
ABS issued includes asset-backed securities issued through the Legacy Sequoia, Sequoia, CAFL and HEI securitization entities, as well as securities issued by certain third-party Freddie Mac K-Series and SLST securitization entities that we consolidate. These instruments are generally illiquid in nature and trade infrequently. Significant inputs in the valuation analysis are predominantly Level 3, due to the nature of these instruments and the lack of readily available market quotes. For ABS issued, we utilize both market comparable pricing and discounted cash flow analysis valuation techniques. Relevant market indicators factored into the analysis include bid/ask spreads, the amount and timing of collateral credit losses, interest rates, and collateral prepayment rates. Estimated fair values incorporate market indicators as well as other significant unobservable inputs to generate discounted cash flows (Level 3). These cash flow models use significant unobservable inputs such as discount rate, prepayment rate, default rate, and loss severity. A decrease in credit losses or discount rates, or an increase in prepayment rates, would generally cause the fair value of the ABS issued to decrease (i.e., become a larger liability).
Financial Instruments Carried at Amortized Cost
Guarantee obligations
In association with our risk-sharing transactions with the Agencies, we have made certain guarantees which are carried on our balance sheet at amortized cost (Level 3).
ABS issued
We account for certain ABS issued by securitizations we consolidate at amortized cost (Level 3).
Subordinate securities financing facilities
Borrowings under our subordinate securities financing facilities are secured by real estate securities and carried at unpaid principal balance net of any unamortized deferred issuance costs (Level 3).
Non-Recourse Business Purpose Loan Financing Facilities
Borrowings under our non-recourse business purpose loans financing facilities are secured by BPL bridge loans and other BPL investments and carried at unpaid principal balance net of any unamortized deferred issuance costs (Level 3).
Recourse Business Purpose Loan Financing Facilities
Borrowings under our recourse business purpose loan financing facilities are secured by BPL term and bridge loans and carried at unpaid principal balance net of any unamortized deferred issuance costs (Level 3).
Convertible notes
Convertible notes include unsecured convertible and exchangeable senior notes that are carried at their unpaid principal balance net of any unamortized deferred issuance costs. The fair value of the convertible notes is determined using quoted prices in generally active markets (Level 2).
Trust preferred securities and subordinated notes
Trust preferred securities and subordinated notes are carried at their unpaid principal balance net of any unamortized deferred issuance costs (Level 3).