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White Mountains Insurance Group LTD revenue

White Mountains Insurance Group LTD's revenue was $3.73bn in fiscal 2025, up 66.8% on the year before. Since fiscal 2009 ($3.44bn) it has grown at a compound 0.5% a year. Over the last twelve months it was $3.83bn.

Revenue history

US$ millions unless shown otherwise. Fiscal years, plus the last twelve months (LTM) when newer.

White Mountains Insurance Group LTD: revenue history, annual
Fiscal year2009Dec 20092010Dec 20102011Dec 20112012Dec 20122013Dec 20132014Dec 20142015Dec 20152016Dec 20162017Dec 20172018Dec 20182019Dec 20192020Dec 20202021Dec 20212022Dec 20222023Dec 20232024Dec 20242025Dec 2025LTMJun 2026
Revenue3,4432,3342,1732,4361,3621,4114401583743698938966141,1582,1672,2403,7353,830
Growth on the year before—−32.2%−6.9%+12.1%−44.1%+3.6%−68.8%−64.2%+137.0%−1.3%+142.0%+0.2%−31.4%+88.5%+87.1%+3.4%+66.8%—
Gross profit———————562341208458845451,0592,1262,2103,5833,606
Gross margin———————35.3%62.7%32.6%94.6%98.7%88.7%91.5%98.1%98.7%95.9%94.1%

Revenue as reported in the company's 10-K and 10-Q filings (for banks, net interest income plus non-interest income). Growth is left blank when the earlier figure was zero or negative.

Where the revenue comes from

Fiscal year to December 31, 2025
Segments
Line of business Revenue YoY
Ark Insurance Holdings Limited WM Outrigger Re $1.9B ▲ 11.0%
Bamboo Insurance Services LLC $246M ▲ 37.0%
Kudu Investment Management LLC $183M ▲ 54.4%
HG Global BAM $73.6M —
Distinguished Partners $57.7M —

These categories overlap or exclude eliminations, so shares aren't shown.

From White Mountains Insurance Group LTD's 10-K filed February 27, 2026, as tagged in the filing. View filing. Indented rows are part of the line above; their share is of that line. In the bars, the faint bar behind is the year before.

Revenue against peers

Property & Casualty Insurance: the closest covered companies by revenue. Last twelve months.

CompanyRevenueGrowth3-year growth a year
White Mountains Insurance Group LTD $3.83bn 55.4% 30.3%
Stewart Information Services Corp $3.27bn 22.5% 10.1%
Kemper Corp $4.57bn -4.5% -4.8%
Selective Insurance Group Inc $5.44bn 4.0% 10.1%
Pelagos Insurance Capital Ltd $2.50bn 3.3% —
Mercury General Corp $6.34bn 10.0% 14.3%

Compare with peers

Head to head: STC vs WTMKMPR vs WTMSIGI vs WTM

More: Property & Casualty Insurance stocks compared, Financials sector, rankings of US companies

Figures from White Mountains Insurance Group LTD's SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to White Mountains Insurance Group LTD.