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WTMNYSEFire, Marine & Casualty InsuranceFiscal year ends December 31

WHITE MOUNTAINS INSURANCE GROUP LTD

Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$2167.12+6.81 (+0.32%)

Close on Oct 19, 2026

Market cap
$5.22B
P/E (TTM)
4.9
Dividend yield
0.05%

WHITE MOUNTAINS INSURANCE GROUP LTD revenue by segment

By business segment

RevenueFY2025FY2024FY2023FY2022FY2021FY2020FY2019FY2018FY2017FY2016% of revenueYoY
P&C Insurance and Reinsurance (Ark/WM Outrigger)$1.94B$1.75B$1.56B$1.01B$668.50M–––––52.0%+11.0%
P&C Insurance Distribution (Bamboo)$246.30M$179.80M$0$0––––––6.6%+37.0%
Asset Management (Kudu)$183.40M$118.80M$177.10M$118.50M$134.00M–––––4.9%+54.4%
Financial Guarantee (HG Global)$73.60M-$44.60M$92.40M-$46.40M$23.00M–––––2.0%-265.0%
Specialty Insurance Distribution (Distinguished)$57.70M$0$0–––––––1.5%–
BAM–––––––––-$7.80M––
HG Global–––––––––$24.50M––
OneBeacon–––––––––$1.19B––
Other Segments––––––––$187.30M$24.50M––
Media Alpha––––$0$0$48.80M$297.10M$163.20M$116.50M––
Financial Guarantee (HG Global/BAM)–––-$46.40M$23.00M$68.50M$66.60M$24.30M$23.30M$16.70M––
NSM Insurance Group [Member]––––$330.40M$285.10M$233.10M$101.60M$0$0––
Other Operations–––$76.30M-$211.10M$781.40M$523.70M-$53.90M$187.30M$24.50M––
Other––––-$211.10M$781.40M$523.70M-$53.90M$187.30M–––
Asset Management (Kudu)–––$118.50M$134.00M$45.70M$21.20M$0$0–––
Asset Management (Kudu)––––$134.00M$45.70M$21.20M–––––
Ark–––$1.01B$668.50M$0$0–––––

By product or service

RevenueFY2025FY2024FY2023FY2022FY2021FY2020FY2019FY2018FY2017FY2016% of revenueYoY
Other Operations––––$45.10M$29.70M$25.90M$16.90M$400.00K–––
Total commission and other revenue––––$340.00M$293.40M$240.00M$105.70M$400.00K–––
Advertising revenues––––––$48.80M$295.50M$163.20M–––
Specialty Transportation––––$97.20M$85.50M$77.60M$28.30M––––
Real estate––––$34.40M$44.90M$34.70M$17.80M––––
Social Services––––$33.90M$28.90M$25.90M$14.70M––––
Product and service revenues––––$87.50M$14.50M$5.50M–––––
Pet––––$76.30M$55.00M$45.90M–––––

By region

From the segment and revenue-disaggregation notes of White Mountains Insurance's 10-K and 10-Q filings (XBRL). Fourth-quarter figures are the fiscal year less the first nine months. Segment names follow the company's own labels and can change when it reorganizes.