Ark’s Outrigger Re sidecar delivers $45m of income for White Mountains in 2025
6th February 2026White 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 from the 2024 underwriting year.
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