White Mountains Insurance Group, Ltd., through its subsidiaries, engages in the provision of insurance and other financial services in the United States. It operates through four segments: Ark/WM Outrigger, HG Global, Kudu, and Bamboo. The Ark/WM Outrigger segment offers insurance and reinsurance products, including property, specialty, marine and energy, casualty, and accident and health. The HG Global segment provides reinsurance to BAM, focusing on single risk limits for small-to-medium sized, and public investment grade municipal bonds that are issued to finance public purpose projects, including schools, utilities, and transportation facilities. The Kudu segment offers capital solutions for boutique asset and wealth managers for various purposes comprising generational ownership transfers, management buyouts, acquisition and growth finance, and legacy partner liquidity, as well as strategic assistance to investees. The Bamboo segment is involved in the operation of a capital-light, tech- and data-enabled insurance distribution platform, which provides homeowners' insurance and related products to the residential property market. White Mountains Insurance Group, Ltd. was incorporated in 1980 and is headquartered in Hamilton, Bermuda.
Company profile updated November 7, 2026.
As of November 6, 2026. Daily closing data may differ from the live quote shown in the dashboard.
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