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INVESTMENTS
 12 Months Ended
Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]  
INVESTMENTS INVESTMENTS
The following table presents Citi’s investments by category:

December 31,
In millions of dollars20242023
Debt securities available-for-sale (AFS)$226,876 $256,936 
Debt securities held-to-maturity (HTM)(1)
242,382 254,247 
Marketable equity securities carried at fair value(2)
151 258 
Non-marketable equity securities carried at fair value(2)(3)
427 508 
Non-marketable equity securities measured using the measurement alternative(4)
1,574 1,639 
Non-marketable equity securities carried at cost(5)
5,247 5,497 
Total investments(6)
$476,657 $519,085 

(1)Carried at adjusted amortized cost basis, net of any ACL.
(2)Unrealized gains and losses are recognized in earnings.
(3)Includes $23 million and $25 million of investments in funds for which the fair values are estimated using the net asset value of the Company’s ownership interest in the funds at December 31, 2024 and 2023, respectively.
(4)Impairment losses and adjustments to the carrying value as a result of observable price changes are recognized in earnings. See “Non-Marketable Equity Securities Not Carried at Fair Value” below.
(5)Represents shares issued by the Federal Reserve Bank, Federal Home Loan Banks and certain exchanges of which Citigroup is a member.
(6)Not included in the balances above is approximately $2 billion of accrued interest receivable at December 31, 2024 and 2023, which is included in Other assets on the Consolidated Balance Sheet. The Company does not recognize an allowance for credit losses on accrued interest receivable for AFS and HTM debt securities, consistent with its non-accrual policy, which results in timely write-off of accrued interest. The Company did not reverse through interest income any accrued interest receivables for the years ended December 31, 2024 and 2023.

The following table presents interest and dividend income on investments:

In millions of dollars202420232022
Taxable interest$17,978 $17,654 $10,643 
Interest exempt from U.S. federal income tax317 334 348 
Dividend income367 312 223 
Total interest and dividend income on investments$18,662 $18,300 $11,214 

The following table presents realized gains and losses on the sales of investments, which exclude impairment losses:

In millions of dollars202420232022
Gross realized investment gains$533 $324 $323 
Gross realized investment losses(205)(136)(256)
Net realized gains on sales of investments$328 $188 $67 
Debt Securities Available-for-Sale
The amortized cost and fair value of AFS debt securities were as follows:

 December 31, 2024December 31, 2023
In millions of dollarsAmortized
cost		Gross
unrealized
gains		Gross
unrealized
losses		Allowance for credit lossesFair
value		Amortized
cost		Gross
unrealized
gains		Gross
unrealized
losses		Allowance for credit lossesFair
value
Debt securities AFS        
Mortgage-backed securities(1)
        
U.S. government-sponsored agency guaranteed(2)(3)
$30,208 $40 $942 $— $29,306 $30,279 $170 $734 $— $29,715 
Residential626 — 2 — 624 426 — 3 — 423 
Commercial1 — — — 1 1 — — — 1 
Total mortgage-backed securities$30,835 $40 $944 $— $29,931 $30,706 $170 $737 $— $30,139 
U.S. Treasury and federal agency securities
U.S. Treasury$52,630 $13 $264 $— $52,379 $81,684 $59 $1,382 $— $80,361 
Total U.S. Treasury
and federal agency securities		$52,630 $13 $264 $— $52,379 $81,684 $59 $1,382 $— $80,361 
State and municipal$1,749 $12 $103 $— $1,658 $2,204 $18 $91 $— $2,131 
Foreign government134,002 444 1,087 — 133,359 132,045 528 1,375 — 131,198 
Corporate4,923 19 122 6 4,814 5,610 18 208 8 5,412 
Asset-backed securities(1)
856 3 11 — 848 921 17 — — 938 
Other debt securities3,887 1 1 — 3,887 6,754 4 1 — 6,757 
Total debt securities AFS$228,882 $532 $2,532 $6 $226,876 $259,924 $814 $3,794 $8 $256,936 

(1)The Company invests in mortgage- and asset-backed securities, which are typically issued by VIEs through securitization transactions. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. See Note 23 for mortgage- and asset-backed securitizations in which the Company has other involvement.
(2)In January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer. See Note 1.
(3)Amortized cost includes unallocated portfolio-layer cumulative basis adjustments of $(0.2) billion as of December 31, 2024. Gross unrealized gains and gross unrealized (losses) on mortgage-backed securities excluding the effect of unallocated portfolio-layer hedges cumulative basis adjustments were $35 million and $(1,129) million, respectively, as of December 31, 2024.

At December 31, 2024, the amortized cost of AFS debt securities for those in a loss position exceeded their fair value by $2,532 million. Of the $2,532 million, $1,037 million represented unrealized losses on AFS debt securities that have been in a gross unrealized loss position for less than a year and, of these, 67% were rated investment grade; and $1,495 million represented unrealized losses on AFS debt securities that have been in a gross unrealized loss position for a year or more and, of these, 91% were rated investment grade. Of the $1,495 million, $688 million represents mortgage-backed securities.

The following table presents the fair value of AFS debt securities that have been in an unrealized loss position:

 Less than 12 months12 months or longerTotal
In millions of dollarsFair
value		Gross
unrealized
losses		Fair
value		Gross
unrealized
losses		Fair
value		Gross
unrealized
losses
December 31, 2024      
Debt securities AFS      
Mortgage-backed securities      
U.S. government-sponsored agency guaranteed$16,690 $255 $8,484 $687 $25,174 $942 
Residential375 1 216 1 591 2 
Commercial— — 1 — 1 — 
Total mortgage-backed securities$17,065 $256 $8,701 $688 $25,766 $944 
U.S. Treasury and federal agency securities    
U.S. Treasury$13,660 $166 $1,710 $98 $15,370 $264 
Total U.S. Treasury and federal agency securities$13,660 $166 $1,710 $98 $15,370 $264 
State and municipal$855 $72 $335 $31 $1,190 $103 
Foreign government49,384 487 19,719 600 69,103 1,087 
Corporate455 45 2,444 77 2,899 122 
Asset-backed securities388 11 — — 388 11 
Other debt securities1,098 — 939 1 2,037 1 
Total debt securities AFS$82,905 $1,037 $33,848 $1,495 $116,753 $2,532 
December 31, 2023      
Debt securities AFS      
Mortgage-backed securities      
U.S. government-sponsored agency guaranteed$8,602 $86 $9,734 $648 $18,336 $734 
Residential352 1 34 2 386 3 
Commercial— — — — — — 
Total mortgage-backed securities$8,954 $87 $9,768 $650 $18,722 $737 
U.S. Treasury and federal agency securities
U.S. Treasury$11,851 $113 $57,669 $1,269 $69,520 $1,382 
Total U.S. Treasury and federal agency securities$11,851 $113 $57,669 $1,269 $69,520 $1,382 
State and municipal$906 $17 $324 $74 $1,230 $91 
Foreign government42,250 540 29,176 835 71,426 1,375 
Corporate2,319 103 1,619 105 3,938 208 
Asset-backed securities154 — 16 — 170 — 
Other debt securities1,864 1 228 — 2,092 1 
Total debt securities AFS$68,298 $861 $98,800 $2,933 $167,098 $3,794 
The following table presents the amortized cost and fair value of AFS debt securities by contractual maturity dates:

 December 31, 2024
In millions of dollarsAmortized
cost		Fair
value
Weighted- average yield(1)
Mortgage-backed securities(2)
  
Due within 1 year$19 $19 2.60 %
After 1 but within 5 years880 869 4.05 
After 5 but within 10 years556 526 3.95 
After 10 years29,573 28,517 4.58 
Total(3)
$31,028 $29,931 4.55 %
U.S. Treasury and federal agency securities  
Due within 1 year$30,956 $30,924 1.91 %
After 1 but within 5 years21,474 21,280 3.14 
After 5 but within 10 years200 175 3.63 
After 10 years— — — 
Total$52,630 $52,379 2.42 %
State and municipal  
Due within 1 year$12 $12 1.75 %
After 1 but within 5 years131 126 3.68 
After 5 but within 10 years399 387 3.70 
After 10 years1,207 1,133 3.99 
Total$1,749 $1,658 3.89 %
Foreign government  
Due within 1 year$58,930 $58,958 4.73 %
After 1 but within 5 years69,775 69,297 5.17 
After 5 but within 10 years4,770 4,670 4.50 
After 10 years527 434 4.85 
Total$134,002 $133,359 4.95 %
All other(4)
  
Due within 1 year$5,122 $5,110 2.55 %
After 1 but within 5 years3,731 3,657 3.31 
After 5 but within 10 years741 743 2.18 
After 10 years72 39 1.84 
Total$9,666 $9,549 2.81 %
Total debt securities AFS(3)
$229,075 $226,876 4.22 %

(1)Weighted-average yields are weighted based on the amortized cost of each security. The effective yield considers the contractual coupon, amortization of premiums and accretion of discounts and excludes the effects of any related hedging derivatives.
(2)Includes mortgage-backed securities of U.S. government-sponsored agencies. The Company invests in mortgage- and asset-backed securities, which are typically issued by VIEs through securitization transactions. See Note 23 for additional information about mortgage- and asset-backed securitizations in which the Company has other involvement.
(3)Amortized cost excludes unallocated portfolio-layer cumulative basis adjustments of $(0.2) billion as of December 31, 2024.
(4)Includes corporate, asset-backed and other debt securities.
Debt Securities Held-to-Maturity
The carrying value and fair value of debt securities HTM were as follows:

In millions of dollars
Amortized
cost, net(1)
Gross
unrealized
gains		Gross
unrealized
losses		Fair
value
December 31, 2024    
Debt securities HTM    
Mortgage-backed securities(2)
    
U.S. government-sponsored agency guaranteed(3)
$72,542 $— $10,291 $62,251 
Non-U.S. residential— — — — 
Commercial1,247 12 151 1,108 
Total mortgage-backed securities$73,789 $12 $10,442 $63,359 
U.S. Treasury securities$126,142 $— $6,934 $119,208 
State and municipal8,903 27 668 8,262 
Foreign government988 3 — 991 
Asset-backed securities(2)
32,560 91 61 32,590 
Total debt securities HTM, net$242,382 $133 $18,105 $224,410 
December 31, 2023    
Debt securities HTM    
Mortgage-backed securities(2)
    
U.S. government-sponsored agency guaranteed$79,689 $7 $8,603 $71,093 
Non-U.S. residential198 — — 198 
Commercial1,146 2 156 992 
Total mortgage-backed securities$81,033 $9 $8,759 $72,283 
U.S. Treasury securities$131,776 $— $9,908 $121,868 
State and municipal9,182 73 477 8,778 
Foreign government2,210 — 58 2,152 
Asset-backed securities(2)
30,046 9 135 29,920 
Total debt securities HTM, net$254,247 $91 $19,337 $235,001 

(1)Amortized cost is reported net of ACL of $137 million and $95 million at December 31, 2024 and 2023, respectively.
(2)The Company invests in mortgage- and asset-backed securities. These securitizations are generally considered VIEs. The Company’s maximum exposure to loss from these VIEs is equal to the carrying amount of the securities, which is reflected in the table above. See Note 23 for mortgage- and asset-backed securitizations in which the Company has other involvement.
(3)In January 2023, Citi adopted ASU 2022-01. Upon adoption, Citi transferred $3.3 billion (amortized cost) of mortgage-backed securities from HTM classification to AFS classification as allowed under the ASU. At the time of transfer, the securities were in an unrealized gain position of $0.1 billion, which was recorded in AOCI upon transfer. See Note 1.

The Company has the positive intent and ability to hold these securities to maturity or, where applicable, until the exercise of any issuer call option, absent any unforeseen significant changes in circumstances, including deterioration in credit or changes in regulatory capital requirements.
The net unrealized losses classified in AOCI for HTM debt securities primarily relate to debt securities previously classified as AFS that were transferred to HTM, and include any cumulative fair value hedge adjustments. The net unrealized loss amount also includes any non-credit-related changes in fair value of HTM debt securities that have suffered credit impairment recorded in earnings. The AOCI balance related to HTM debt securities is amortized as an adjustment of yield, in a manner consistent with the accretion of any difference between the carrying value at the transfer date and par value of the same debt securities.
The following table presents the carrying value and fair value of HTM debt securities by contractual maturity dates:

 December 31, 2024
In millions of dollars
Amortized
cost(1)
Fair
value
Weighted- average yield(2)
Mortgage-backed securities  
Due within 1 year$68 $68 5.53 %
After 1 but within 5 years1,127 1,075 3.24 
After 5 but within 10 years1,168 1,075 2.73 
After 10 years71,426 61,141 2.89 
Total$73,789 $63,359 2.90 %
U.S. Treasury securities
Due within 1 year$36,665 $36,296 0.94 %
After 1 but within 5 years89,477 82,912 1.16 
After 5 but within 10 years— — — 
After 10 years— — — 
Total$126,142 $119,208 1.10 %
State and municipal  
Due within 1 year$32 $31 2.73 %
After 1 but within 5 years162 162 3.89 
After 5 but within 10 years1,923 1,810 2.87 
After 10 years6,786 6,259 3.40 
Total$8,903 $8,262 3.29 %
Foreign government  
Due within 1 year$328 $327 9.95 %
After 1 but within 5 years660 664 9.80 
After 5 but within 10 years— — — 
After 10 years— — — 
Total$988 $991 9.86 %
All other(3)
  
Due within 1 year$— $— — %
After 1 but within 5 years— — — 
After 5 but within 10 years13,040 13,058 6.07 
After 10 years19,520 19,532 5.97 
Total$32,560 $32,590 6.01 %
Total debt securities HTM$242,382 $224,410 2.38 %

(1)Amortized cost is reported net of ACL of $137 million at December 31, 2024.
(2)Weighted-average yields are weighted based on the amortized cost of each security. The effective yield considers the contractual coupon, amortization of premiums and accretion of discounts and excludes the effects of any related hedging derivatives.
(3)Includes corporate and asset-backed securities.

HTM Debt Securities Delinquency and Non-Accrual
Details
Citi did not have any HTM debt securities that were delinquent or on non-accrual status at December 31, 2024 and 2023.

There were no purchased credit-deteriorated HTM debt securities held by the Company as of December 31, 2024 and 2023.
Evaluating Investments for Impairment—AFS Debt Securities

Overview
The Company conducts periodic reviews of all AFS debt securities with unrealized losses to evaluate whether the impairment resulted from expected credit losses or from other factors and to evaluate the Company’s intent to sell such securities.
An AFS debt security is impaired when the current fair value of an individual AFS debt security is less than its amortized cost basis.
The Company recognizes the entire difference between amortized cost basis and fair value in earnings for impaired AFS debt securities that Citi has an intent to sell or for which Citi believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. However, for those AFS debt securities that the Company does not intend to sell and is not likely to be required to sell, only the credit-related impairment is recognized in earnings by recording an allowance for credit losses. Any remaining fair value decline for such securities is recorded in AOCI. The Company does not consider the length of time that the fair value of a security is below its amortized cost when determining if a credit loss exists.
For AFS debt securities, credit losses exist where Citi does not expect to receive contractual principal and interest cash flows sufficient to recover the entire amortized cost basis of a security. The allowance for credit losses is limited to the amount by which the AFS debt security’s amortized cost basis exceeds its fair value. The allowance is increased or decreased if credit conditions subsequently worsen or improve. Reversals of credit losses are recognized in earnings.
The Company’s review for impairment of AFS debt securities generally entails:

•identification and evaluation of impaired investments;
•consideration of evidential matter, including an evaluation of factors or triggers that could cause individual positions to qualify as credit impaired and those that would not support credit impairment; and
•documentation of the results of these analyses, as required under business policies.

The sections below describe the Company’s process for identifying expected credit impairments for debt security types that have the most significant unrealized losses as of December 31, 2024.

Agency Mortgage-Backed Securities
Citi records no allowances for credit losses on U.S. government-agency-guaranteed mortgage-backed securities, because the Company expects to incur no credit losses in the event of default due to a history of incurring no credit losses and due to the nature of the counterparties.

State and Municipal Securities
The process for estimating credit losses in Citigroup’s AFS state and municipal bonds is primarily based on a credit analysis that incorporates third-party credit ratings. Citi monitors the bond issuers and any insurers providing default protection in the form of financial guarantee insurance. The average external credit rating, disregarding any insurance, is Aa2/AA. In the event of an external rating downgrade or other indicator of credit impairment (i.e., based on instrument-specific estimates of cash flows or probability of issuer default), the subject bond is specifically reviewed for adverse changes in the amount or timing of expected contractual principal and interest payments.
For AFS state and municipal bonds with unrealized losses that Citi plans to sell or would more-likely-than-not be required to sell prior to recovery of value, the full impairment is recognized in earnings. For AFS state and municipal bonds where Citi has no intent to sell and it is not more-likely-than-not that the Company will be required to sell, Citi records an allowance for expected credit losses for the amount it expects not to collect, capped at the difference between the bond’s amortized cost basis and fair value.



Recognition and Measurement of Impairment
The following table presents total impairment on AFS investments recognized in earnings:

Year ended
In millions of dollars202420232022
Impairment losses recognized in earnings for debt securities that the Company intends to sell, would more-likely-than-not be required to sell or will be subject to an issuer call deemed probable of exercise$323 $188 $360 
Allowance for Credit Losses on AFS Debt Securities
The allowance for credit losses on AFS debt securities held that the Company does not intend to sell nor will likely be required to sell was $6 million and $8 million as of December 31, 2024 and 2023, respectively.

Non-Marketable Equity Securities Not Carried at
Fair Value
Non-marketable equity securities are required to be measured at fair value with changes in fair value recognized in earnings unless (i) the measurement alternative is elected or (ii) the investment represents Federal Reserve Bank and Federal Home Loan Bank stock or certain exchange seats that continue to be carried at cost.
The election to measure a non-marketable equity security using the measurement alternative is made on an instrument-by-instrument basis. Under the measurement alternative, an equity security is carried at cost plus or minus changes resulting from observable prices in orderly transactions for the identical or a similar investment of the same issuer. The carrying value of the equity security is adjusted to fair value on the date of an observed transaction. Fair value may differ from the observed transaction price due to a number of factors, including marketability adjustments and differences in rights and obligations when the observed transaction is not for the identical investment held by Citi.
Equity securities under the measurement alternative, which are composed of private equity investments, are also assessed for impairment. On a quarterly basis, management qualitatively assesses whether each equity security under the measurement alternative is impaired. Impairment indicators that are considered include, but are not limited to, the following:

•a significant deterioration in the earnings performance, credit rating, asset quality or business prospects of the investee;
•a significant adverse change in the regulatory, economic or technological environment of the investee;
•a significant adverse change in the general market condition of either the geographical area or the industry in which the investee operates;
•a bona fide offer to purchase, an offer by the investee to sell or a completed auction process for the same or similar investment for an amount less than the carrying amount of that investment; and
•factors that raise significant concerns about the investee’s ability to continue as a going concern, such as negative cash flows from operations, working capital deficiencies or noncompliance with statutory capital requirements or debt covenants.

When the qualitative assessment indicates that the equity security is impaired, its fair value is determined. If the fair value of the investment is less than its carrying value, the investment is written down to fair value through earnings.

Below is the carrying value of non-marketable equity securities measured using the measurement alternative at December 31, 2024 and 2023:

In millions of dollarsDecember 31, 2024December 31, 2023
Measurement alternative:
Carrying value$1,574 $1,639 

Below are amounts recognized in earnings and life-to-date amounts for non-marketable equity securities measured using the measurement alternative:

Year ended December 31,
In millions of dollars20242023
Measurement alternative(1):
Impairment losses$108 $135 
Downward changes for observable prices5 24 
Upward changes for observable prices84 87 

(1)     See Note 26 for additional information on these nonrecurring fair value measurements.

Life-to-date amounts on securities still held
In millions of dollarsDecember 31, 2024
Measurement alternative:
Impairment losses$438 
Downward changes for observable prices38 
Upward changes for observable prices1,033 

A similar impairment analysis is performed for non-marketable equity securities carried at cost. For the years ended December 31, 2024 and 2023, there was no impairment loss recognized in earnings for non-marketable equity securities carried at cost.

Equity Method Investments
Management assesses equity method investments that have fair values that are less than their respective carrying values for other-than-temporary impairment (OTTI). Fair value is measured as price multiplied by quantity if the investee has publicly listed securities. If the investee is not publicly listed, other methods are used (see Note 26).
For impaired equity method investments that Citi plans to sell prior to recovery of value or would more-likely-than-not be required to sell, with no expectation that the fair value will recover prior to the expected sale date, the full impairment is recognized as OTTI in Other revenue regardless of severity and duration. The measurement of the OTTI does not include partial projected recoveries subsequent to the balance sheet date.

For impaired equity method investments that management does not plan to sell and is not more-likely-than-not to be required to sell prior to recovery of value, the evaluation of whether an impairment is other-than-temporary is based on (i) whether and when an equity method investment will recover in value and (ii) whether the investor has the intent and ability to hold that investment for a period of time sufficient to recover the value. The determination of whether the impairment is considered other-than-temporary considers the following indicators:

•the cause of the impairment and the financial condition and near-term prospects of the issuer, including any specific events that may influence the operations of the issuer;
•the intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value; and
•the length of time and extent to which fair value has been less than the carrying value.