White Mountains Insurance Group, Ltd. (WTM) is in Financial Services, Insurance - Property & Casualty, based in Bermuda, listed on NYSE. Market cap 4.92B USD. 52-week range 1,830.13 to 2,333.00 USD. Trailing P/E 4.7. Data as of 2026-10-09.
White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie, mortgage, nuclear, political and credit, space, surety, and terrorism and political violence; marine and ...