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v3.25.3

VARIABLE INTEREST ENTITIES (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 USD ($) account | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) account | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($)
Variable Interest Entity [Line Items] |  |  |  |  |
Number of segregated accounts | account | 4 |  | 4 |  |
Assets | $ 54,498,074 |  | $ 54,498,074 |  | $ 50,707,550
Liabilities | 35,526,649 |  | 35,526,649 |  | 33,155,789
Investments in other ventures, under equity method | 115,597 |  | 115,597 |  | 102,770
Ceded premiums written | 265,824 | $ 237,632 | 1,628,708 | $ 1,615,727 |
Ceded premiums earned | 464,714 | $ 474,073 | 1,300,284 | 1,342,979 |
Variable Interest Entity, Primary Beneficiary | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 1,100,000 |  | 1,100,000 |  | 1,900,000
Liabilities | 1,100,000 |  | 1,100,000 |  | 1,900,000
Net assets | 32,400 |  | 32,400 |  | 60,500
Variable Interest Entity, Primary Beneficiary | Investors Of Upsilon RFO Diversified I, II and III | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Payments of capital distribution |  |  | 230,500 | 190,600 |
Net assets | 255,900 |  | 255,900 |  | 282,200
Variable Interest Entity, Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Payments of capital distribution |  |  | $ 27,900 | $ 33,000 |
Variable interest entity, ownership percentage |  |  | 12.70% | 12.60% |
Variable Interest Entity, Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Payments of capital distribution |  |  | $ 29,500 | $ 9,200 |
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investments in other ventures, under equity method | 400 |  | 400 |  | 500
Variable Interest Entity, Not Primary Beneficiary | NOC1 |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investments in other ventures, under equity method | 1,900 |  | 1,900 |  | 1,700
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investments in other ventures, under equity method | 2,200 |  | 2,200 |  | 3,600
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 266,500 |  | 266,500 |  | 440,600
Liabilities | 33,400 |  | 33,400 |  | 140,900
Variable Interest Entity, Not Primary Beneficiary | Upsilon Diversified | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investment owned, fair value | 245,000 |  | 245,000 |  | 304,000
Variable Interest Entity, Not Primary Beneficiary | NOC1 |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 188,800 |  | 188,800 |  | 173,400
Liabilities | 1,300 |  | 1,300 |  | 2,200
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 702,500 |  | 702,500 |  | 936,100
Liabilities | 702,500 |  | 702,500 |  | 936,100
Variable Interest Entity, Not Primary Beneficiary | Mona Lisa Re | Term Loans |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investment in participating notes | 4,300 |  | 4,300 |  | 7,000
Variable Interest Entity, Not Primary Beneficiary | Tailwind Re Ltd |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 100 |  | 100 |  | 416,800
Liabilities | 100 |  | 100 |  | 416,800
Variable Interest Entity, Not Primary Beneficiary | AlphaCat Managers Ltd |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Assets | 1,300,000 |  | 1,300,000 |  | 3,000,000
Liabilities | 700,000 |  | 700,000 |  | 1,300,000
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Upsilon Diversified |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Payments of capital distribution |  |  | 300 | 300 |
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | NOC1 | Preference shares |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investment in variable interest entity |  |  |  | 200 |
Redemption of shares |  |  |  | 500 |
Variable Interest Entity, Not Primary Beneficiary | RenaissanceRe Holdings Ltd. | Tailwind Re Ltd |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Ceded premiums written |  |  |  | 42,700 |
Ceded premiums earned |  |  |  | 28,500 |
Variable Interest Entity, Not Primary Beneficiary | Investors Of Upsilon RFO Diversified IV | Upsilon RFO Re Ltd. |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Net assets | $ 104,800 |  | 104,800 |  | $ 115,900
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Payments of capital distribution |  |  | 207,800 | 165,100 |
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | Upsilon Diversified | Preference shares |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investment in variable interest entity |  |  | 17,500 | 16,900 |
Variable Interest Entity, Not Primary Beneficiary | Third Party Investor | NOC1 | Preference shares |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Investment in variable interest entity |  |  |  | 20,000 |
Redemption of shares |  |  |  | 48,800 |
Variable Interest Entity, Not Primary Beneficiary | Renaissance Reinsurance Ltd. | Mona Lisa Re |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Ceded premiums written |  |  | 56,200 | 45,700 |
Ceded premiums earned |  |  | 49,400 | 28,500 |
Variable Interest Entity, Not Primary Beneficiary | DaVinci Reinsurance Ltd. | Mona Lisa Re |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Ceded premiums written |  |  | 14,100 | 11,400 |
Ceded premiums earned |  |  | $ 12,400 | $ 7,100 |

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