v3.26.1
Mortgage-Backed Securities
6 Months Ended
Jun. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Mortgage-Backed Securities MORTGAGE-BACKED SECURITIES
 
The following tables provide details on the Company’s MBS by investment type as of the dates indicated:
June 30, 2026
($s in thousands)
Agency RMBS
Agency CMBS
CMBS IO (1)
Total
Measured at fair value through net income:
Amortized cost
$23,144,536 $1,342,853 $28,150 $24,515,539 
Gross unrealized gain
118,228 1,878 120,108 
Gross unrealized loss
(243,941)(9,769)(1,230)(254,940)
Fair value through net income
$23,018,823 $1,334,962 $26,922 $24,380,707 
Measured at fair value through OCI:
Amortized cost
$721,456 $44,289 $47,819 $813,564 
Gross unrealized gain
— — 2,416 2,416 
Gross unrealized loss
(126,582)(2,088)(1,819)(130,489)
Fair value through OCI
$594,874 $42,201 $48,416 $685,491 
Total$23,613,697 $1,377,163 $75,338 $25,066,198 
December 31, 2025
Agency RMBS
Agency CMBS
CMBS IO (1)
Total
Measured at fair value through net income:
Amortized cost
$14,233,682 $1,165,674 $30,680 $15,430,036 
Gross unrealized gain
236,304 8,293 20 244,617 
Gross unrealized loss
(99,899)(995)(1,147)(102,041)
Fair value through net income
$14,370,087 $1,172,972 $29,553 $15,572,612 
Measured at fair value through OCI:
Amortized cost
$757,127 $47,433 $56,877 $861,437 
Gross unrealized gain
— 25 2,620 2,645 
Gross unrealized loss
(125,854)(2,087)(1,765)(129,706)
Fair value through OCI
$631,273 $45,371 $57,732 $734,376 
Total$15,001,360 $1,218,343 $87,285 $16,306,988 
(1) The Company held a notional balance of CMBS IO of $5.5 billion as of June 30, 2026, and $6.0 billion as of December 31, 2025.

The majority of the Company’s MBS are pledged as collateral for the Company’s repurchase agreements, which are disclosed in Note 4. Actual maturities of MBS are affected by the contractual lives of the underlying mortgage collateral, scheduled payments, and unscheduled prepayments of principal, and the payment priority structure of the security; therefore, actual maturities are generally shorter than the securities' stated contractual maturities.
The following table presents information regarding unrealized gains and losses on investments reported within net income (loss) on the Company’s consolidated statements of comprehensive income (loss) for the periods indicated:
Three Months EndedSix Months Ended
June 30,June 30,
($s in thousands)
2026202520262025
Agency RMBS$(17,336)$29,102 $(262,117)$138,362 
Agency CMBS(8,208)4,266 (15,189)4,376 
CMBS IO(54)315 (101)924 
Other investments
(24)(31)(26)(13)
Unrealized (loss) gain on investments, net$(25,622)$33,652 $(277,433)$143,649 

The following table presents information regarding realized gains and losses on sales of MBS reported in the Company’s consolidated statements of comprehensive income (loss) for the periods indicated:
Three Months EndedSix Months Ended
June 30,June 30,
($s in thousands)
2026202520262025
Realized gain on sales of MBS - FVO
$— $— $8,721 $— 
Realized loss on sale of MBS - FVO
— — — — 
Total realized gain on sales of investments, net
$— $— $8,721 $— 

The following table presents certain information for MBS designated as AFS that were in an unrealized loss position as of the dates indicated:
 June 30, 2026December 31, 2025
($s in thousands)
Fair ValueGross Unrealized Losses# of SecuritiesFair ValueGross Unrealized Losses# of Securities
Continuous unrealized loss position for less than 12 months:    
Agency MBS$4,453 $(87)5$730 $(1)2
Non-Agency MBS— 1208 (22)3
Continuous unrealized loss position for 12 months or longer:
Agency MBS$674,948 $(130,402)51$721,536 $(129,658)56
Non-Agency MBS— — 752 (25)3
The unrealized loss positions on the Company’s MBS designated as AFS as of June 30, 2026 and December 31, 2025 were the result of higher interest rates and wider spreads to U.S. Treasuries compared to at the time of purchase. The unrealized loss positions are not credit related; therefore, the Company did not record an allowance for credit losses as of June 30, 2026 or December 31, 2025. The Company has the ability and intent to hold any MBS with an unrealized loss until the recovery in its value. This assessment is based on the amount of the unrealized loss and significance of the related investment as well as the Company’s leverage and liquidity position. In addition, for its non-Agency MBS, which are not guaranteed by a GSE, the Company reviews the credit ratings, the credit characteristics of the mortgage loans collateralizing these securities, and the estimated future cash flows including projected collateral losses.