White Mountains Insurance Group Reports 25% BVPS Growth in 2025.
ByAinvest
Friday, Feb 6, 2026 8:03 am ET1min read
WTM--
White Mountains Insurance Group reported a book value per share of $2,188 as of December 31, 2025, an 18% increase for Q4 and 25% for the year. The growth was mainly driven by the net gain from the sale of Bamboo and solid results from operating companies, including Ark's 83% combined ratio and $2.6 billion of gross written premiums, up 16%.
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