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Investments (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Estimated Fair Value of Available-for-Sale Investments, Excluding VIE Investments

The amortized cost and estimated fair value of available-for-sale investments, excluding VIE investments, at June 30, 2020 and December 31, 2019, were as follows:



	Amortized Cost		Allowance for Credit Losses		Gross Unrealized Gains in AOCI		Gross Unrealized Losses in AOCI		Estimated Fair Value
June 30, 2020:
Fixed income securities:
Municipal obligations	$	317	$	—	$	17	$	3	$	330
Corporate obligations ⁽¹⁾	1,010		—		34		7		1,037
Foreign obligations	74		—		1		—		75
U.S. government obligations	118		—		6		—		123
Residential mortgage-backed securities	258		—		34		1		291
Commercial mortgage-backed securities	—		—		—		—		—
Collateralized debt obligations	74		—		—		2		73
Other asset-backed securities	275		—		20		7		288
	2,126		—		112		20		2,218
Short-term	691		—		—		—		692
	2,817		—		113		20		2,910
Fixed income securities pledged as collateral:
Short-term	155		—		—		—		155
Total collateralized investments	155		—		—		—		155
Total available-for-sale investments	$	2,972	$	—	$	113	$	20	$	3,065



	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Non-credit Other-than temporary Impairments ⁽²⁾
December 31, 2019:
Fixed income securities:
Municipal obligations	$	194	$	22	$	—	$	215	$	—
Corporate obligations ⁽¹⁾	1,396		36		2		1,430		—
Foreign obligations	44		1		—		44		—
U.S. government obligations	157		2		2		156		—
Residential mortgage-backed securities	200		47		—		248		—
Commercial mortgage-backed securities	49		1		—		50		—
Collateralized debt obligations	147		—		1		146		—
Other asset-backed securities	263		24		—		287		—
	2,450		132		5		2,577		—
Short-term	653		—		—		653		—
	3,103		132		5		3,230		—
Fixed income securities pledged as collateral:
Short-term	85		—		—		85		—
Total collateralized investments	85		—		—		85		—
Total available-for-sale investments	$	3,187	$	132	$	5	$	3,314	$	—


(1)	Includes Ambac's holdings of the secured notes issued by Ambac LSNI in connection with the Rehabilitation Exit Transactions.


(2)	At December 31, 2019, represents the amount of non-credit other-than-temporary impairment losses remaining in accumulated other comprehensive income on securities that also had a credit impairment. These losses are included in gross unrealized losses at December 31, 2019.

Summary of Amortized Cost and Estimated Fair Value of Available-for-Sale Investments, Excluding VIE Investments Held by Successor Ambac, by Contractual Maturity

The amortized cost and estimated fair value of available-for-sale investments, excluding VIE investments, at June 30, 2020, by contractual maturity, were as follows:



	Amortized Cost		Estimated Fair Value
Due in one year or less	$	862	$	863
Due after one year through five years	912		923
Due after five years through ten years	408		432
Due after ten years	182		196
	2,365		2,413
Residential mortgage-backed securities	258		291
Collateralized debt obligations	74		73
Other asset-backed securities	275		288
Total	$	2,972	$	3,065

Summary of Gross Unrealized Losses and Fair Values of Ambac's Available-for-Sale Investments

The following table shows gross unrealized losses and fair values of Ambac’s available-for-sale investments, excluding VIE investments, which at June 30, 2020, did not have an allowance for credit losses under the new CECL standard and, at December 31, 2019, did not have other-than-temporary impairments recorded in earnings under prior GAAP. This information is aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, at June 30, 2020 and December 31, 2019:



	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
June 30, 2020:
Fixed income securities:
Municipal obligations	$	114	$	3	$	8	$	—	$	123	$	3
Corporate obligations	508		7		—		—		508		7
U.S. government obligations	7		—		—		—		7		—
Residential mortgage-backed securities	70		1		—		—		70		1
Collateralized debt obligations	60		1		13		—		73		2
Other asset-backed securities	87		6		3		1		90		7
	846		18		25		2		870		20
Short-term	75		—		—		—		75		—
Total securities	$	921	$	18	$	25	$	2	$	945	$	20



	Less Than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss		Fair Value		Gross Unrealized Loss
December 31, 2019:
Fixed income securities:
Municipal obligations	$	13	$	—	$	10	$	—	$	23	$	—
Corporate obligations	63		2		5		—		68		2
Foreign obligations	20		—		—		—		20		—
U.S. government obligations	36		2		2		—		38		2
Residential mortgage-backed securities	5		—		—		—		5		—
Commercial mortgage-backed securities	7		—		—		—		7		—
Collateralized debt obligations	53		—		63		1		116		1
Other asset-backed securities	2		—		7		—		10		—
	200		4		88		1		288		5
Short-term	201		—		—		—		201		—
Total securities	$	401	$	4	$	88	$	1	$	489	$	5

Summary of Amounts Included in Net Realized (Losses) Gains and Other-Than-Temporary Impairments

The following table details amounts included in net realized gains (losses) and impairments included in earnings for the affected periods:



	Three Months Ended June 30,					Six Months Ended June 30,
	2020			2019		2020			2019
Gross realized gains on securities	$	20		$	10	$	27		$	34
Gross realized losses on securities	(11		)	—		(11		)	(4		)
Net foreign exchange (losses) gains	1			26		3			23
Credit impairments ⁽¹⁾	—			—		—			—
Intent / requirement to sell impairments ⁽²⁾	—			—		—			—
Net realized gains (losses)	$	10		$	36	$	18		$	53


(1)	Includes securities which management does not intend to sell and it is not more likely than not that the Company will be required to sell before recovery of the amortized cost basis.

(2)

Includes securities which management either intends sell or it is more likely than not that the Company will be required to sell before recovery of the amortized cost basis.

Summary of Roll-Forward of Ambac's Cumulative Credit Losses on Debt Securities for Which Portion of Other-than-Temporary Impairment was Recognized in Other Comprehensive Income

The following table presents a roll-forward of Ambac’s cumulative credit losses on debt securities for which a portion of an other-than-temporary impairment was recognized in other comprehensive income under prior GAAP for the six months ended June 30, 2019:



Balance, beginning of period	$	12
Reductions for credit impairments previously recognized on:
Securities that matured or were sold during the period	(1		)
Balance, end of period	$	12

Summary of Fair Value, Including Financial Guarantee, and Weighted-Average Underlying Rating, Excluding Financial Guarantee, of Insured Securities

The following table represents the fair value, including the value of the financial guarantee, and weighted-average underlying rating, excluding the financial guarantee, of the insured securities at June 30, 2020 and December 31, 2019, respectively:



	Municipal Obligations		Corporate Obligations ⁽²⁾		Mortgage and Asset- backed Securities		Total		Weighted Average Underlying Rating ⁽¹⁾
June 30, 2020:
Ambac Assurance Corporation	$	294	$	467	$	458	$	1,220	CCC+
National Public Finance Guarantee Corporation	8		—		—		8		BBB-
Total	$	303	$	467	$	458	$	1,228	B-

December 31, 2019:
Ambac Assurance Corporation	$	176	$	535	$	442	$	1,153	B-
National Public Finance Guarantee Corporation	11		—		—		11		BBB-
Total	$	187	$	535	$	442	$	1,164	B-


(1)	Ratings are based on the lower of Standard & Poor’s or Moody’s rating. If unavailable, Ambac’s internal rating is used.

(2)

Represents Ambac's holdings of secured notes issued by Ambac LSNI in connection with the Rehabilitation Exit Transactions. These secured notes are insured by Ambac Assurance.

Equity Method Investments [Table Text Block]

Ambac has pre-funded capital contributions (included in Other Assets on the Consolidated Balance Sheet and in Purchase of Other Invested Assets in the Consolidated Statements of Cash Flows) of $75 and unfunded commitments of $49 to private credit and private equity funds at June 30, 2020.



	Fair Value
Class of Funds	June 30, 2020		December 31, 2019		Redemption Frequency	Redemption Notice Period
Real estate properties⁽¹⁾	$	15	$	16	quarterly	10 business days
Hedge funds ⁽²⁾	100		65		quarterly	90 days
High yields and leveraged loans ^{(3) (10)}	49		176		daily	0 - 30 days
Private credit ⁽⁴⁾	56		51		quarterly	180 days if permitted
Insurance-linked investments⁽⁵⁾	3		3		fully redeemed	none
Equity market investments^{(6) (10)}	40		55		daily	0 days
Investment grade floating rate income ⁽⁷⁾	66		66		weekly	0 days
Private equity ⁽⁸⁾	4		—		quarterly	90 days if permitted
Emerging markets debt ^{(9) (10)}	17		—		daily	0 days
Total equity investments in pooled funds	$	350	$	432


(1)	Investments consist of UK property to generate income and capital growth.


(2)	This class seeks to generate superior risk-adjusted returns through selective asset sourcing, active trading and hedging strategies within structured credit markets, including mortgage-backed securities, commercial real estate securities and loans, CLOs, REITs and asset backed securities.


(3)	This class of funds includes investments in a range of instruments including high-yield bonds, leveraged loans, CLOs, ABS and floating rate notes to generate income and capital appreciation.


(4)	This class aims to obtain high long-term return primarily through credit and preferred equity investments with low liquidity and defined term.


(5)	This class seeks to generate returns from insurance markets through investments in catastrophe bonds, life insurance and other insurance linked investments.


(6)	This class of funds aim to achieve long term growth through diversified exposure to global equity markets.


(7)	This class of funds includes investments in high quality floating rate debt securities including ABS and corporate floating rate notes as well as ultra-short term bonds and money market instruments.


(8)	This class seeks to generate long-term capital appreciation through investments in private equity, equity-related and other instruments.


(9)	This class seeks long-term income and growth through investments in the bonds of issuers in emerging markets.

(10)

These categories include fair value amounts totaling $50 and $136 at June 30, 2020 and December 31, 2019, respectively, that are readily determinable and are priced through pricing vendors, including for High yield and leveraged loans products: $3 and $81; for Equity market investments: $30 and $55; and for Emerging markets debt $17 and $0

Summary of Net Investment Income

Net investment income (loss) was comprised of the following for the affected periods:



	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Fixed income securities	$	26		$	74		$	55		$	118
Short-term investments	1			5			4			10
Investment expense	(1		)	(1		)	(3		)	(3		)
Securities available-for-sale and short-term	26			78			57			125
Other investments	27			8			(25		)	16
Total net investment income (loss)	$	52		$	86		$	31		$	141

Net investment income (loss) from Other investments primarily represents changes in fair value on securities classified as trading or accounted for under the fair value option, income from investment limited partnerships accounted for under the equity method and the above noted equity interest in an unconsolidated trust accounted for under the equity method.

The portion of net unrealized gains (losses) related to trading securities still held at the end of each period is as follows:



	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020			2019
Net gains (losses) recognized during the period on trading securities	$	17	$	7	$	(16	)	$	14
Less: net gains (losses) recognized during the reporting period on trading securities sold during the period	5		3		(19		)	4
Unrealized gains (losses) recognized during the reporting period on trading securities still held at the reporting date	$	12	$	4	$	4		$	10