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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2022

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

Below is a summary of the assets and liabilities that are measured at fair value on a recurring basis and also represents the carrying amount on the Company’s consolidated balance sheets:



At December 31, 2022	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Fixed maturity investments
U.S. treasuries	$	7,180,129	$	7,180,129	$	—	$	—
Corporate (1)	4,390,568		—		4,390,568		—
Agencies	395,149		—		395,149		—

Non-U.S. government	383,838		—		383,838		—



Residential mortgage-backed	710,429		—		710,429		—
Commercial mortgage-backed	213,987		—		213,987		—
Asset-backed	1,077,302		—		1,077,302		—
Total fixed maturity investments	14,351,402		7,180,129		7,171,273		—
Short term investments	4,669,272		—		4,669,272		—
Equity investments	625,058		625,058		—		—
Other investments
Catastrophe bonds	1,241,468		—		1,241,468		—
Term loans	100,000		—		—		100,000
Direct private equity investments	66,780		—		—		66,780

	1,408,248		—		1,241,468		166,780

Fund investments (2)	1,086,706

Total other investments	2,494,954		—		1,241,468		166,780
Other assets and (liabilities)
Assumed and ceded (re)insurance contracts (3)	(1,832)		—		—		(1,832)
Derivative assets (4)	44,400		387		44,013		—
Derivatives liabilities (4)	(7,560)		(2,008)		(5,552)		—

Total other assets and (liabilities)	35,008		(1,621)		38,461		(1,832)
	$	22,175,694	$	7,803,566	$	13,120,474	$	164,948

(1)Corporate fixed maturity investments include non-U.S. government-backed corporate fixed maturity investments.

(2)Fund investments, which are comprised of private equity funds, private credit funds, and hedge funds are measured at fair value using the net asset value per share (or its equivalent) as a practical expedient and have not been classified in the fair value hierarchy. The fair value presented in this table is provided to permit reconciliation of the fair value hierarchy to the amounts presented in the consolidated balance sheet.

(3)Included in assumed and ceded (re)insurance contracts at December 31, 2022 was $3.5 million of other assets and $5.3 million of other liabilities.

(4)Refer to “Note 18. Derivative Instruments” for additional information related to the fair value, by type of contract, of derivatives entered into by the Company.



At December 31, 2021	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Fixed maturity investments
U.S. treasuries	$	6,247,779	$	6,247,779	$	—	$	—
Corporate (1)	3,689,286		—		3,689,286		—
Agencies	361,684		—		361,684		—

Non-U.S. government	549,613		—		549,613		—



Residential mortgage-backed	955,301		—		955,301		—
Commercial mortgage-backed	634,925		—		634,925		—
Asset-backed	1,068,543		—		1,068,543		—
Total fixed maturity investments	13,507,131		6,247,779		7,259,352		—
Short term investments	5,298,385		—		5,298,385		—
Equity investments	546,016		546,016		—		—
Other investments
Catastrophe bonds	1,104,034		—		1,104,034		—
Direct private equity investments	88,373		—		—		88,373
Term loans	74,850						74,850
	1,267,257		—		1,104,034		163,223
Fund investments (2)	725,802



Total other investments	1,993,059		—		1,104,034		163,223
Other assets and (liabilities)
Assumed and ceded (re)insurance contracts (3)	(4,727)		—		—		(4,727)
Derivative assets (4)	17,889		1,067		16,822		—
Derivative liabilities (4)	(16,954)		(1,598)		(15,356)		—

Total other assets and (liabilities)	(3,792)		(531)		1,466		(4,727)
	$	21,340,799	$	6,793,264	$	13,663,237	$	158,496

(1)Corporate fixed maturity investments include non-U.S. government-backed corporate fixed maturity investments.

(3)Included in assumed and ceded (re)insurance contracts at December 31, 2021 was $6.1 million of other assets and $10.8 million of other liabilities.

(4)Refer to “Note 18. Derivative Instruments” for additional information related to the fair value, by type of contract, of derivatives entered into by the Company.

Schedule of Quantitative Information Used as Level 3 Inputs

Below is a summary of quantitative information regarding the significant unobservable inputs (Level 3) used in determining the fair value of assets and liabilities measured at fair value on a recurring basis:

At December 31, 2022

Fair Value
(Level 3)

Valuation Technique

Unobservable Inputs

Low

High

Weighted Average or Actual

Other investments

Direct private equity investments

66,780

Internal valuation model

Discount rate

n/a

7.5

Liquidity discount

n/a

15.0

Term loans

100,000

Discounted cash flow

Credit spread adjustment

n/a

0.2

Risk premium

n/a

2.6

Total other investments

166,780

Other assets and (liabilities)

Assumed and ceded (re)insurance contracts

(1,832)

Internal valuation model

Net undiscounted cash flows

n/a

14,734

Expected loss ratio

n/a

5.8

Discount rate

n/a

4.0

Total other assets and (liabilities)

(1,832)

Total other assets and (liabilities) measured at fair value on a recurring basis using Level 3 inputs

164,948

At December 31, 2021

Fair Value
(Level 3)

Valuation Technique

Unobservable Inputs

Low

High

Weighted Average or Actual

Other investments

Direct private equity investments

88,373

Internal valuation model

Discount rate

n/a

7.5

Liquidity discount

n/a

15.0

Term loans

74,850

Discounted cash flow

Credit spread adjustment

n/a

0.2

Risk premium

n/a

2.6

Total other investments

163,223

Other assets and (liabilities)

Assumed and ceded (re)insurance contracts

(4,727)

Internal valuation model

Net undiscounted cash flows

n/a

14,920

Expected loss ratio

n/a

14.7

Discount rate

n/a

1.3

Total other assets and (liabilities)

(4,727)

Total other assets and (liabilities) measured at fair value on a recurring basis using Level 3 inputs

158,496

Schedule of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Level 3 Inputs

Below is a reconciliation of the beginning and ending balances, for the periods shown, of assets and liabilities measured at fair value on a recurring basis using Level 3 inputs.






















	Other Investments
	Direct private equity investments		Term loans		Other Assets and (Liabilities)		Total
Balance - January 1, 2022	$	88,373	$	74,850	$	(4,727)	$	158,496
Included in net investment income	188		605		—		793
Included in net realized and unrealized gains (losses) on investments	(26,893)		—		—		(26,893)
Included in other income	—		—		2,682		2,682
Total foreign exchange gains	(11)		—		—		(11)
Purchases	5,123		25,000		213		30,336

Settlements	—		(455)		—		(455)



Balance - December 31, 2022	$	66,780	$	100,000	$	(1,832)	$	164,948






















	Other Investments
	Direct private equity investments		Term loans		Other Assets and (Liabilities)		Total
Balance - January 1, 2021	$	79,807	$	—	$	(6,211)	$	73,596

Included in net realized and unrealized gains (losses) on investments	(159)		—		—		(159)
Included in other income	—		—		2,624		2,624
Total foreign exchange gains	(3)		—		—		(3)
Purchases	9,676		74,850		(1,140)		83,386
Sales	(948)		—		—		(948)



Balance - December 31, 2021	$	88,373	$	74,850	$	(4,727)	$	158,496

Schedule of Assets and Liabilities Measured at Fair Value an a Recurring Basis Using Level 3 Inputs

Below is a reconciliation of the beginning and ending balances, for the periods shown, of assets and liabilities measured at fair value on a recurring basis using Level 3 inputs.






















	Other Investments
	Direct private equity investments		Term loans		Other Assets and (Liabilities)		Total
Balance - January 1, 2022	$	88,373	$	74,850	$	(4,727)	$	158,496
Included in net investment income	188		605		—		793
Included in net realized and unrealized gains (losses) on investments	(26,893)		—		—		(26,893)
Included in other income	—		—		2,682		2,682
Total foreign exchange gains	(11)		—		—		(11)
Purchases	5,123		25,000		213		30,336

Settlements	—		(455)		—		(455)



Balance - December 31, 2022	$	66,780	$	100,000	$	(1,832)	$	164,948






















	Other Investments
	Direct private equity investments		Term loans		Other Assets and (Liabilities)		Total
Balance - January 1, 2021	$	79,807	$	—	$	(6,211)	$	73,596

Included in net realized and unrealized gains (losses) on investments	(159)		—		—		(159)
Included in other income	—		—		2,624		2,624
Total foreign exchange gains	(3)		—		—		(3)
Purchases	9,676		74,850		(1,140)		83,386
Sales	(948)		—		—		(948)



Balance - December 31, 2021	$	88,373	$	74,850	$	(4,727)	$	158,496

Schedule of the Balances the Company has Elected to Account for at Fair Value

Below is a summary of the balances the Company has elected to account for at fair value:



At December 31,	2022		2021
Other investments	$	2,494,954	$	1,993,059
Other assets	$	3,499	$	6,100
Other liabilities	$	5,331	$	10,827

Schedule of Other Investments Measured Using Net Asset Valuations

The table below shows the Company’s portfolio of other investments measured using net asset valuations as a practical expedient:



At December 31, 2022	Fair Value		Unfunded Commitments		Redemption Frequency	Redemption Notice Period (Minimum Days)	Redemption Notice Period (Maximum Days)
Private credit funds	$	771,383	$	714,302	See below	See below	See below
Private equity funds	$	315,323	$	493,155	See below	See below	See below

Total other investments measured using net asset valuations	$	1,086,706	$	1,207,457



At December 31, 2021	Fair Value		Unfunded Commitments		Redemption Frequency	Redemption Notice Period (Minimum Days)	Redemption Notice Period (Maximum Days)
Private credit funds	$	473,112	$	868,571	See below	See below	See below
Private equity funds	$	241,297	$	458,566	See below	See below	See below
Hedge funds	11,394		—		See below	See below	See below
Total other investments measured using net asset valuations	$	725,803	$	1,327,137

Schedule of Variable Interest Entities

The following table summarizes the aggregate carrying amount of the unconsolidated fund investments in VIEs, as well as our maximum exposure to loss associated with these VIEs:



	Maximum Exposure to Loss
At December 31, 2022	Carrying amount		Unfunded Commitments		Total
Other investments	$	916,248	$	1,148,630	$	2,064,878

At December 31, 2021
Other investments	$	539,866	$	1,282,451	$	1,822,317

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

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