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, 2024 December 31, 2023 ($s in thousands) Par Value Amortized Cost Fair Value Par Value Amortized Cost Fair Value Agency RMBS $ 6,353,838 $ 6,326,070 $ 5,962,418 $ 6,022,502 $ 5,993,922 $ 5,763,532 Agency CMBS 102,299 102,516 97,482 121,293 121,799 115,595 CMBS IO (1) n/a 139,994 133,239 n/a 167,314 159,718 Non-Agency other — — — 150 150 103 Total $ 6,456,137 $ 6,568,580 $ 6,193,139 $ 6,143,945 $ 6,283,185 $ 6,038,948 (1) The notional balance for Agency CMBS IO and non-Agency CMBS IO was $7,321,369 and $3,167,395, respectively, as of June 30, 2024, and $7,723,379 and $3,860,007, respectively, as of December 31, 2023. June 30, 2024 ($s in thousands) Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value MBS measured at fair value through OCI: Agency RMBS $ 863,181 $ — $ (168,488) $ 694,693 Agency CMBS 102,516 — (5,034) 97,482 CMBS IO 101,780 1,359 (5,392) 97,747 Total $ 1,067,477 $ 1,359 $ (178,914) $ 889,922 MBS measured at fair value through net income: Agency RMBS $ 5,462,889 $ 13,333 $ (208,497) $ 5,267,725 CMBS IO 38,214 — (2,722) 35,492 Total $ 5,501,103 $ 13,333 $ (211,219) $ 5,303,217 December 31, 2023 ($s in thousands) Amortized Cost Gross Unrealized Gain Gross Unrealized Loss Fair Value MBS measured at fair value through OCI: Agency RMBS $ 898,420 $ — $ (148,606) $ 749,814 Agency CMBS 106,527 28 (5,159) 101,396 CMBS IO 126,672 1,296 (6,014) 121,954 Non-Agency other 150 — (47) 103 Total $ 1,131,769 $ 1,324 $ (159,826) $ 973,267 MBS measured at fair value through net income: Agency RMBS $ 5,095,502 $ 48,459 $ (130,243) $ 5,013,718 Agency CMBS 15,272 — (1,073) 14,199 CMBS IO 40,642 2 (2,880) 37,764 Total $ 5,151,416 $ 48,461 $ (134,196) $ 5,065,681 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, periodic payments of principal, 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 Ended Six Months Ended June 30, June 30, ($s in thousands) 2024 2023 2024 2023 Agency RMBS $ (43,705) $ 1,254 $ (113,381) $ 57,033 Agency CMBS 1,263 (275) 1,073 (37) CMBS IO 351 (466) 157 626 Other investments 114 (25) 150 (13) Total unrealized gain (loss) on investments, net $ (41,977) $ 488 $ (112,001) $ 57,609 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 Ended Six Months Ended June 30, June 30, ($s in thousands) 2024 2023 2024 2023 Realized losses on sales of MBS - FVO $ (1,506) $ (51,601) $ (1,506) $ (74,916) Total realized loss on sales of investments, net $ (1,506) $ (51,601) $ (1,506) $ (74,916) 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, 2024 December 31, 2023 ($s in thousands) Fair Value Gross Unrealized Losses # of Securities Fair Value Gross Unrealized Losses # of Securities Continuous unrealized loss position for less than 12 months: Agency MBS $ 6,309 $ (263) 7 $ 3,926 $ (149) 4 Non-Agency MBS 164 (3) 1 1,736 (37) 8 Continuous unrealized loss position for 12 months or longer: Agency MBS $ 862,038 $ (178,136) 70 $ 932,682 $ (158,651) 78 Non-Agency MBS 11,397 (512) 24 21,704 (989) 41 The unrealized losses on the Company’s MBS designated as AFS were the result of rising interest rates and declines in market prices and were not credit related; therefore, the Company did not have any allowance for credit losses as of June 30, 2024 or December 31, 2023. Although the unrealized losses are not credit related, the Company assesses its 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, the Company reviews the credit |