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Investments in RMBS (Tables)
6 Months Ended
Jun. 30, 2025
Investments in RMBS [Abstract]  
Summary of RMBS Investments

The following is a summary of the Company’s investments in RMBS as of the dates indicated (dollars in thousands):

Summary of RMBS Assets

As of June 30, 2025

             
Gross Unrealized
             
Weighted Average
 
Asset Type
 
Original
Face
Value
   
Book
Value
   
Gains
   
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
 
Coupon
   
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                                   
 
                 
Fannie Mae
 
$
150,782
   
$
117,473
   
$
1,705
   
$
(877
)
 
$
118,301
     
10
 
(B)
   
4.68
%
   
4.84
%
   
27
 
Freddie Mac
   
125,240
     
98,000
     
512
     
(1,407
)
   
97,105
     
10
 
(B)
   
4.68
%
   
4.76
%
   
27
 
RMBS, measured at fair value through earnings
                                                                         
Fannie Mae
    404,885       359,318       5,009       (1,556 )     362,771       29    (B)     5.02 %     5.14 %     28  
Freddie Mac
    647,778       569,122       7,887       (2,743 )     574,266       50    (B)     5.05 %     5.15 %     28  
Total/weighted average RMBS
 
$
1,328,685
   
$
1,143,913
   
$
15,113
   
$
(6,583
)
 
$
1,152,443
     
99
 
 
   
4.97
%
   
5.08
%
   
28
 

As of December 31, 2024


             
Gross Unrealized
             
Weighted Average
 
Asset Type
 
Original
Face
Value
   
Book
Value
   
Gains
   
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
 
Coupon
   
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                                   
 
                 
Fannie Mae
 
$
160,092
   
$
131,441
   
$
492
   
$
(2,282
)
 
$
129,651
     
11
 
(B)
   
4.62
%
   
4.79
%
   
27
 
Freddie Mac
   
157,618
     
127,839
     
-
     
(5,362
)
   
122,477
     
12
 
(B)
   
4.34
%
   
4.44
%
   
27
 
RMBS, measured at fair value through earnings                                                                          
Fannie Mae
    335,927       299,453       1,870       (5,375 )     295,948       24   (B)     4.81 %     4.94 %     28  
Freddie Mac
    648,523       580,529       3,134       (9,319 )     574,344       48   (B)
    4.93 %     5.03 %     28  
Total/weighted average RMBS   $ 1,302,160     $ 1,139,262     $ 5,496     $ (22,338 )   $ 1,122,420       95         4.80 %     4.91 %     28  

(A)
See Note 9 regarding the estimation of fair value, which approximates carrying value for all securities.
(B)
The Company used an implied AAA rating for the Agency RMBS.
(C)
The weighted average yield is based on the most recent gross monthly interest income, which is then annualized and divided by the book value of settled securities.
Summary of RMBS Investments by Maturity
Summary of RMBS Assets by Maturity

As of June 30, 2025

                Gross Unrealized              
Weighted Average
 
Years to Maturity
 
Original
Face
Value
   
Book
Value
   
Gains
   
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
  Coupon    
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                                   
 
                 
Over 10 Years
 
$
276,022
   
$
215,474
   
$
2,216
   
$
(2,284
)
 
$
215,406
     
20
 
(B)
   
4.68
%
   
4.81
%
   
27
 
RMBS, measured at fair value through earnings
                                               
 
                       
Over 10 Years
   
1,052,663
     
928,439
     
12,897
     
(4,299
)
   
937,037
     
79
 
(B)
   
5.04
%
   
5.14
%
   
28
 
Total/weighted average RMBS
 
$
1,328,685
   
$
1,143,913
   
$
15,113
   
$
(6,583
)
 
$
1,152,443
     
99
 
 
   
4.97
%
   
5.08
%
   
28
 
 
As of December 31, 2024


             
Gross Unrealized
             
Weighted Average
 
Years to Maturity
 
Original
Face
Value
   
Book
Value
   
Gains
   
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
 
Coupon
   
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                                                       
Over 10 Years
 
$
317,711
   
$
259,280
   
$
492
   
$
(7,644
)
 
$
252,128
     
23
 
(B)
   
4.48
%
   
4.62
%
   
27
 
RMBS, measured at fair value through earnings
 



































 
Over 10 Years
    984,449       879,982       5,004       (14,694 )     870,292       72   (B)     4.89 %     5.00 %     28  
Total/weighted average RMBS   $ 1,302,160     $ 1,139,262     $ 5,496     $ (22,338 )   $ 1,122,420       95         4.80 %     4.91 %     28  

(A)
See Note 9 regarding the estimation of fair value, which approximates carrying value for all securities.
(B)
The Company used an implied AAA rating for the Agency RMBS.
(C)
The weighted average yield is based on the most recent gross monthly interest income, which is then annualized and divided by the book value of settled securities.
Summary of RMBS Securities in an Unrealized Loss Position

The following tables summarize the Company’s available-for-sale securities measured at fair value through OCI in an unrealized loss position as of the dates indicated (dollars in thousands):

Available-For-Sale RMBS Unrealized Loss Positions
 
As of June 30, 2025
 
                               
Weighted Average
 
Duration in Loss Position
 
Original
Face
Value
   
Book
Value
   
Gross
Unrealized
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
  Coupon    
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                             
 
                 
Less than Twelve Months
  $
98,782     $
73,820     $
(1,049 )   $
72,771       7   (B)
    4.69 %     4.75 %     27  
Twelve or More Months
 
46,906    
36,132    
(1,235 )  
34,897       3   (B)
    3.72 %     3.89 %     26  
Total/weighted average RMBS, available-for-sale, measured at fair value through OCI 
 
$
145,688
   
$
109,952
   
$
(2,284
)
 
$
107,668
     
10
 
 
   
4.38
%
   
4.47
%
   
27
 
 
As of December 31, 2024
 
                               
Weighted Average
 
Duration in Loss Position
 
Original
Face
Value
   
Book
Value
   
Gross
Unrealized
Losses
   
Carrying
Value(A)
   
Number of
Securities
 
Rating
  Coupon    
Yield(C)
   
Maturity
(Years)
 
RMBS, available-for-sale, measured at fair value through OCI
                             
 
                 
Less than Twelve Months
 
$
174,646
   
$
142,337
   
$
(2,993
)
 
$
139,344
     
13
 
(B)
   
4.76
%
   
4.86
%
   
27
 
Twelve or More Months
    79,284       63,297       (4,651 )     58,646       5   (B)     3.44 %     3.59 %     27  
Total/weighted average RMBS, available-for-sale, measured at fair value through OCI
 
$
253,930
   
$
205,634
   
$
(7,644
)
 
$
197,990
     
18
 
 
   
4.35
%
   
4.47
%
   
27
 

(A)
See Note 9 regarding the estimation of fair value, which approximates carrying value for all securities.
(B)
The Company used an implied AAA rating for the Agency RMBS.
(C)
The weighted average yield is based on the most recent gross monthly interest income, which is then annualized and divided by the book value of settled securities.