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

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

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 quarter’s combined ratio remained the same as the prior year’s quarter. For the full year 2025, Ark/WM Outrigger saw $2.557 billion in GWP, which incr…

Ark’s Outrigger Re sidecar delivers $45m of income for White Mountains in 2025 - Artemis.bm

This content is copyright to www.artemis.bm and should not appear anywhere else, or an infringement has occurred. White Mountains has reported that its investment into the Outrigger Re collateralized reinsurance sidecar, which supports its P&C insurance and reinsurance subsidiary Ark, delivered pre-tax income of $45 million in 2025, of which $55 million was attributable to the 2025 underwriting year, partially offset by a loss of $10 million fro…