White Mountains’ Ark/WM Outrigger Q4’25 GWP reach $268m, CoR unchanged

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Reinsurance News - Feb 06, 2026

White Mountains has released the fourth quarter of 2025 results for its property and casualty re/insurance segment Ark/WM Outrigger, revealing gross written premiums (GWP) of $268 million, with a combined ratio of 77%. GWP in Q4 2025 increased slightly compared to Q4 2024’s $264 million, while the q...

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