White Mountains Insurance Group is a insurance company based in Hanover, United States, founded in 1985. Verified contact details, AUM data, and investment preferences on FindLPs.
White Mountains Insurance Group is a insurance company based in Hanover, US. Founded in 1985. Reported AUM: 6551 USD millions.
Investment types: Buyout, Co-investment, Early Stage, Early Stage: Seed, Early Stage: Start-up, Expansion / Late Stage, Growth, Hybrid, Natural Resources, Secondaries, Venture (General)
Sectors & themes: Diversified, Aerospace, Business Services, Business Support Services, Defence, Energy & Utilities, Financial Services, Healthcare, Industrials, Information Services, Insurance
Preferred geographies: Asia, Europe, North America, OECD
Location: 23 South Main Street Suite 3B
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LP firm data compiled from public regulatory filings (SEC Form ADV, FCA, AIFMD disclosures), company websites and press releases, LinkedIn public profiles, and verified outbound email testing. AUM figures reflect self-reported values from filings and may lag by 1–2 fiscal quarters; bands are normalized in USD. We do not publish personal residential information; firms or individuals may request removal at /contact. Methodology & sources · Updated July 2026.