NYSE · FIRE, MARINE & CASUALTY INSURANCE · LARGE CAP
White Mountains Insurance Group Ltd. WTM
18 fiscal years on record · USD · FY2025 reported · SEC filings only
In brief
What this company does
Written from the business description in WHITE MOUNTAINS INSURANCE GROUP, LTD's annual report to the U.S. Securities and Exchange Commission, filed 27 February 2026. Every sentence was checked against that document before publication.
Growth
USD 3.7B
Revenue, FY2025 · full 18-year series below
Revenue $B
Net income $B
FY2025 · Revenue 3.7 · Net income 1.1
Compound annual growth
+47.8%
+33.1%
+23.8%
+3.2%
+11.8%
+15.8%
+13.6%
+24.0%
+28.4%
+0.0%
+0.0%
+0.0%
+0.0%
−30.8%
+18.3%
−2.9%
−0.9%
3 yrs
5 yrs
10 yrs
15 yrs
Revenue compounded at +33.1% a year over five years.
Compound annual rates per period — left blank where that exact year isn't on file, the series crosses a loss, or (per-share rows) a split falls inside the window.
Profitability
32 cents
of every revenue dollar became profit
Operating margin
Net margin
FY2025 · Operating 35.6% · Net 32.2%
ROE
FY2025 · ROE 22.3%
Each USD of equity produced 22 cents of profit this year.
The 18-year record
18 fiscal years
Every figure from documents filed with the SEC · USD
row low → row highnegative
| Metric | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue $B | 3.7 | 2.2 | 2.2 | 1.2 | 0.6 | 0.9 | 0.3 | 0.4 | 0.2 | 0.2 | 0.4 | 1.4 | 1.4 | 2.4 | 2.2 | 2.3 | 3.4 | 2.9 |
| Operating income $B | 1.3 | 0.3 | 0.6 | −0.1 | −0.3 | 0.7 | 0.4 | · | · | · | · | · | · | · | · | · | · | · |
| EBITDA $B | 1.3 | 0.3 | 0.5 | −0.1 | −0.3 | 0.7 | 0.4 | · | · | · | · | · | · | · | · | · | · | · |
| Income tax $B | 0.1 | 0.0 | −0.0 | 0.0 | 0.0 | −0.0 | 0.0 | −0.0 | −0.0 | −0.0 | 0.0 | −0.0 | 0.0 | −0.0 | −0.1 | 0.0 | 0.2 | −0.5 |
| Net income $B | 1.1 | 0.2 | 0.5 | 0.8 | −0.3 | 0.7 | 0.4 | −0.2 | 0.6 | 0.4 | 0.3 | 0.3 | 0.3 | 0.2 | 0.8 | 0.1 | 0.6 | −0.6 |
| EPS, diluted $ | 430.14 | 89.79 | 198.60 | 276.96 | −89.46 | 226.97 | 130.27 | −41.76 | 146.06 | 80.06 | 50.20 | 51.13 | 51.85 | 30.50 | 97.44 | 10.12 | 53.10 | −54.26 |
| Dividend / sh $ | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 4.00 |
| Payout % | 0 | 1 | 1 | 0 | −1 | · | · | · | · | · | · | · | · | · | · | 10 | 2 | −8 |
| ROE % | 22.3 | 5.3 | 12.8 | 21.7 | −7.4 | · | · | · | · | · | · | · | · | · | · | 2.4 | 12.9 | · |
| Shares out B | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | · |
Slide the table for earlier years · "·" marks a figure not available in our data for that year.
Provenance
Company facts, as filed
How we verify · 0 failures in 52 reconciliationsAUDITED
Reconciled in 18 of 19 fiscal years. 13 checks could not be computed.
EPS recomputationBalance-sheet identityGross profitBalance-sheet liquiditymoeda_consistente0 failures
ActivityFire, Marine & Casualty Insurance
Listed onNYSE
Incorporated inoutside the United States — SEC code D0
Fiscal year endsDecember 31
Data on record since2008