MBS investments held during the year ended December 31, 2020 or in prior periods included Agency MBS and Non-Agency MBS which include MBS issued prior to 2008 (“Legacy Non-Agency MBS”). These MBS are secured by: (i) hybrid mortgages (“Hybrids”), which have interest rates that are fixed for a specified period of time and, thereafter, generally adjust annually to an increment over a specified interest rate index; (ii) adjustable-rate mortgages (“ARMs”), which have interest rates that reset annually or more frequently (collectively, “ARM-MBS”); and (iii) 15 and 30 year fixed-rate mortgages for Agency MBS and, for Non-Agency MBS, 30-year and longer-term fixed-rate mortgages. In addition, the Company’s MBS are also comprised of MBS backed by securitized re-performing/non-performing loans (“RPL/NPL MBS”), where the cash flows of the bond may not reflect the contractual cash flows of the underlying collateral. The Company’s RPL/NPL MBS are generally structured with a contractual coupon step-up feature where the coupon increases from 300 - 400 basis points at 36 - 48 months from issuance or sooner. The Company pledges a significant portion of its MBS as collateral against its borrowings under repurchase agreements (see Note 7).

Agency MBS: Agency MBS are guaranteed as to principal and/or interest by a federally chartered corporation, such as Fannie Mae or Freddie Mac, or an agency of the U.S. Government, such as Ginnie Mae. The payment of principal and/or interest on Ginnie Mae MBS is explicitly backed by the full faith and credit of the U.S. Government. Since the third quarter of 2008, Fannie Mae and Freddie Mac have been under the conservatorship of the Federal Housing Finance Agency, which significantly strengthened the backing for these government-sponsored entities. The Company sold its remaining holdings of Agency MBS during the quarter ended June 30, 2020.

Non-Agency MBS: The Company’s Non-Agency MBS are primarily secured by pools of residential mortgages, which are not guaranteed by an agency of the U.S. Government or any federally chartered corporation. Credit risk associated with Non-Agency MBS is regularly assessed as new information regarding the underlying collateral becomes available and based on updated estimates of cash flows generated by the underlying collateral. During the quarter ended June 30, 2020, the Company had sold substantially all of its holdings of Legacy Non-Agency MBS and substantially reduced its holdings of other Non-Agency MBS. The Company sold its remaining Legacy Non-Agency MBS during the quarter ended September 30, 2020.

CRT securities are debt obligations issued by or sponsored by Fannie Mae and Freddie Mac. The coupon payments on CRT securities are paid by the issuer and the principal payments received are dependent on the performance of loans in either a reference pool or an actual pool of loans. As an investor in a CRT security, the Company may incur a principal loss if the performance of the actual or reference pool loans results in either an actual or calculated loss that exceeds the credit enhancement of the security owned by the Company. The Company assesses the credit risk associated with its investments in CRT securities by assessing the current and expected future performance of the associated loan pool. The Company pledges a portion of its CRT securities as collateral against its borrowings under repurchase agreements (see Note 7).


(In Thousands)	Principal/ Current Face		Purchase Premiums		Accretable Purchase Discounts		Discount Designated as Credit Reserve (1)		Gross Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Net Unrealized Gain/(Loss)		Fair Value
Non-Agency MBS (2)(3)(4)	$	57,847	$	—	$	(8,136)	$	(669)	$	49,042	$	8,585	$	(861)	$	7,724	$	56,766
CRT securities (5)	104,031		3,022		(70)		(20,768)		86,215		18,341		(322)		18,019		104,234
Total residential mortgage securities	$	161,878	$	3,022	$	(8,206)	$	(21,437)	$	135,257	$	26,926	$	(1,183)	$	25,743	$	161,000


(In Thousands)	Principal/ Current Face		Purchase Premiums		Accretable Purchase Discounts		Discount Designated as Credit Reserve (1)		Gross Amortized Cost (6)		Gross Unrealized Gains		Gross Unrealized Losses		Net Unrealized Gain/(Loss)		Fair Value
Agency MBS: (7)
Fannie Mae	$	1,119,708	$	43,249	$	(22)	$	—	$	1,162,935	$	9,799	$	(14,741)	$	(4,942)	$	1,157,993
Freddie Mac	480,879		19,468		—		—		500,961		5,475		(3,968)		1,507		502,468
Ginnie Mae	3,996		73		—		—		4,069		52		—		52		4,121
Total Agency MBS	1,604,583		62,790		(22)		—		1,667,965		15,326		(18,709)		(3,383)		1,664,582
Non-Agency MBS:
Expected to Recover Par (2)(3)	722,477		—		(16,661)		—		705,816		19,861		(9)		19,852		725,668
Expected to Recover Less than Par (2)	1,472,826		—		(73,956)		(436,598)		962,272		375,598		(9)		375,589		1,337,861
Total Non-Agency MBS (4)	2,195,303		—		(90,617)		(436,598)		1,668,088		395,459		(18)		395,441		2,063,529
Total MBS	3,799,886		62,790		(90,639)		(436,598)		3,336,053		410,785		(18,727)		392,058		3,728,111
CRT securities (5)	244,932		4,318		(55)		—		249,195		6,304		(91)		6,213		255,408
Total residential mortgage securities	$	4,044,818	$	67,108	$	(90,694)	$	(436,598)	$	3,585,248	$	417,089	$	(18,818)	$	398,271	$	3,983,519

(3)Includes RPL/NPL MBS, which at December 31, 2020 had a $55.0 million Principal/Current face, $46.9 million amortized cost and $53.9 million fair value. At December 31, 2019, RPL/NPL MBS had a $632.3 million Principal/Current face, $631.8 million amortized cost and $635.0 million fair value.

(5)Amounts disclosed at December 31, 2020 includes CRT securities with a fair value of $66.2 million for which the fair value option has been elected. Such securities had $551,000 gross unrealized gains and gross unrealized losses of approximately $322,000 at December 31, 2020. Amounts disclosed at December 31, 2019 includes CRT securities with a fair value of $255.4 million for which the fair value option had been elected. Such securities had gross unrealized gains of approximately $6.3 million and gross unrealized losses of approximately $91,000 at December 31, 2019.

(7)Amounts disclosed at December 31, 2019 include Agency MBS with a fair value of $280.3 million, for which the fair value option has been elected. Such securities had $4.5 million unrealized gains and no gross unrealized losses at December 31, 2019, respectively.


	For the Year Ended December 31,
	2020				2019				2018
(In Thousands)	Sales Proceeds		Gains/(Losses)		Sales Proceeds		Gains/(Losses)		Sales Proceeds		Gains/(Losses)
Agency MBS	$	1,500,875	$	(19,291)	$	360,634	$	499	$	122,027	$	(6,810)
Non-Agency MBS	1,318,958		107,999		291,391		50,360		117,060		36,744
CRT Securities	243,025		(27,011)		256,671		11,143		299,878		31,373
Total	$	3,062,858	$	61,697	$	908,696	$	62,002	$	538,965	$	61,307


	Unrealized Loss Position For:
	Less than 12 Months					12 Months or more					Total
(Dollars in Thousands)	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses		Number of Securities	Fair Value		Unrealized Losses
Non-Agency MBS (1)	$	41,139	$	861	4	$	—	$	—	—	$	41,139	$	861
CRT securities (2)	62,252		322		8	—		—		—	62,252		322
Total residential mortgage securities	$	103,391	$	1,183	12	$	—	$	—	—	$	103,391	$	1,183

Gross unrealized losses on the Company’s Non-Agency MBS were $861,000 at December 31, 2020. Based upon the most recent evaluation, the Company does not consider these unrealized losses to require an allowance for credit losses and does not believe that these unrealized losses are credit related, but are rather a reflection of current market yields and/or marketplace bid-ask spreads. The Company has reviewed its Non-Agency MBS that are in an unrealized loss position to identify those securities that require an allowance for credit losses based on an assessment of changes in expected cash flows for such securities, which considers recent bond performance and, where possible, expected future performance of the underlying collateral.

The Company did not recognize an allowance for credit losses (or other than temporary impairment in prior year periods) through earnings related to its MBS for the years ended December 31, 2020 and 2019. However, during the three months ended March 31, 2020, the Company recognized an aggregate impairment loss related to its MBS of $63.5 million based on its intent to sell, or the likelihood it will be required to sell, certain securities at such time.

At December 31, 2020 and 2019, the Company had $239.0 million and $1.2 billion, respectively, of term notes issued by SPVs that have acquired rights to receive cash flows representing the servicing fees and/or excess servicing spread associated with certain MSRs. Payment of principal and interest on these term notes is considered to be largely dependent on cash flows generated by the underlying MSRs, as this impacts the cash flows available to the SPV that issued the term notes.

At December 31, 2020, these term notes had an amortized cost of $184.9 million, gross unrealized gains of approximately $54.0 million, a weighted average yield of 12.3% and a weighted average term to maturity of 9.2 years. During the year ended December 31, 2020, the Company sold certain term notes for $711.7 million, realizing gains of $28.7 million, respectively. During the three months ended March 31, 2020, the Company recognized an impairment loss related to its term notes of $280.8 million based on its intent to sell, or the likelihood it will be required to sell, such notes. At December 31, 2019, these term notes had an amortized cost of $1.2 billion, gross unrealized gains of $5.2 million, a weighted average yield of 4.75% and a weighted average term to maturity of 5.3 years.

The Company has made or participated in loans to provide financing to entities that originate residential mortgage loans and own the related MSRs. These corporate loans are secured by MSRs, as well as certain other unencumbered assets owned by the borrower.

The Company has participated in a loan where it committed to lend $32.6 million of which no amount was drawn at December 31, 2020. The facility expires in August 2021. During the remaining commitment period, the Company receives a commitment fee between 0.25% and 1.0% based on the undrawn amount of the loan.


	For the Year Ended December 31,
(Dollars In Thousands)	2020		2019
Allowance for credit losses at beginning of period	$	—	$	—
Current provision:	—		—
Securities with no prior loss allowance	344,269		—
Securities with a prior loss allowance	—		—

Write-offs, including allowance related to securities the Company intended to sell	(344,269)		—


Allowance for credit losses at end of period	$	—	$	—


	For the Year Ended December 31,
(In Thousands)	2020		2019		2018
AOCI from AFS securities:
Unrealized gain on AFS securities at beginning of period	$	392,722	$	417,167	$	620,648
Unrealized (loss)/gain on Agency MBS, net	(161)		21,844		(17,891)
Unrealized gain/(loss) on Non-Agency MBS, net	367,469		(6,682)		(131,939)
Unrealized gain/(loss) on MSR term notes, net	52,973		5,173		(812)
Reclassification adjustment for MBS sales included in net income	(389,127)		(44,600)		(51,580)
Reclassification adjustment for impairment included in net income	(344,269)		(180)		(1,259)
Change in AOCI from AFS securities	(313,115)		(24,445)		(203,481)
Balance at end of period	$	79,607	$	392,722	$	417,167


	For the Year Ended December 31,
(In Thousands)	2020		2019		2018
Agency MBS
Coupon interest	$	14,038	$	82,446	$	88,233
Effective yield adjustment (1)	(5,186)		(26,545)		(25,930)
Interest income	$	8,852	$	55,901	$	62,303

Legacy Non-Agency MBS
Coupon interest	$	18,263	$	87,024	$	109,714
Effective yield adjustment (2)(3)	10,565		59,622		69,309
Interest income	$	28,828	$	146,646	$	179,023

RPL/NPL MBS
Coupon interest	$	8,376	$	53,086	$	46,339
Effective yield adjustment (1)(4)	560		338		1,434
Interest income	$	8,936	$	53,424	$	47,773

CRT securities
Coupon interest	$	7,010	$	20,532	$	30,628
Effective yield adjustment (2)	511		(1,949)		2,748
Interest income	$	7,521	$	18,583	$	33,376

MSR-related assets
Coupon interest	$	25,970	$	52,644	$	27,174
Effective yield adjustment (1)(2)	9,987		3		1,246
Interest income	$	35,957	$	52,647	$	28,420

(1)Includes amortization of premium paid net of accretion of purchase discount. For Agency MBS, RPL/NPL MBS and the corporate loan secured by MSRs, interest income is recorded at an effective yield, which reflects net premium amortization/accretion based on actual prepayment activity.

(2)The effective yield adjustment is the difference between the net income calculated using the net yield less the current coupon yield. The net yield may be based on management’s estimates of the amount and timing of future cash flows or in the instrument’s contractual cash flows, depending on the relevant accounting standards.