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White Mountains Insurance Group Ltd (WTM) stock

WTMNYSEFire, Marine & Casualty InsuranceFiscal year ends December 31
Financials through Q3 FY2026, quarter ended Sep 30, 2026Last filing: 10-Q on Nov 5, 2026Score 15/3030% below fair value
$2254.95+8.43 (+0.38%)

Close on Nov 13, 2026Market cap $5.38BP/E 6.0Yield 0.04%

White Mountains Insurance profit margin

Profit margin (net margin) is net income as a percentage of revenue.

White Mountains Insurance's profit margin for the twelve months ending Sep 30, 2026 was 26.9%. For fiscal 2025 it was 29.6%, against 10.3% the year before. The highest annual figure on record is 68.5% in fiscal 2022.

Annual profit margin

PeriodPeriod endValueChange (pts)
FY2025Dec 31, 202529.6%+19.3
FY2024Dec 31, 202410.3%−13.2
FY2023Dec 31, 202323.5%−45.0
FY2022Dec 31, 202268.5%+113.3
FY2021Dec 31, 2021-44.8%−48.5
FY2010Dec 31, 20103.7%−9.9
FY2009Dec 31, 200913.6%+32.5
FY2008Dec 31, 2008-18.9%–

Quarterly profit margin

Change is against the same quarter a year earlier.

PeriodPeriod endValueChange (pts)
Q3 FY2026Sep 30, 2026-6.1%−19.3
Q2 FY2026Jun 30, 202623.6%+5.8
Q1 FY2026Mar 31, 2026-5.3%−11.1
Q4 FY2025Dec 31, 202552.1%+88.5
Q3 FY2025Sep 30, 202513.2%−8.2
Q2 FY2025Jun 30, 202517.8%+31.6
Q1 FY2025Mar 31, 20255.9%−30.7
Q4 FY2024Dec 31, 2024-36.4%−75.3
Q3 FY2024Sep 30, 202421.3%+16.8
Q2 FY2024Jun 30, 2024-13.8%−19.0
Q1 FY2024Mar 31, 202436.5%+2.8
Q4 FY2023Dec 31, 202338.9%+29.7
Q3 FY2023Sep 30, 20234.5%−227.2
Q2 FY2023Jun 30, 20235.2%+225.8
Q1 FY2023Mar 31, 202333.7%+20.9
Q4 FY2022Dec 31, 20229.2%−3.3
Q3 FY2022Sep 30, 2022231.8%+191.3
Q2 FY2022Jun 30, 2022-220.6%−178.3
Q1 FY2022Mar 31, 202212.8%−37.9
Q4 FY2021Dec 31, 202112.6%−31.9
Q2 FY2021Jun 30, 202140.4%+9.1
Q1 FY2021Mar 31, 2021-42.3%−58.1
Q3 FY2020Sep 30, 202050.7%–
Q2 FY2020Jun 30, 202044.5%–
Q3 FY2019Sep 30, 201931.3%–
Q2 FY2019Jun 30, 201915.9%–

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