White Mountains Insurance Group Ltd (WTM)
White Mountains Insurance Group Ltd brought in $3.8B of revenue over the twelve months to June 30, 2026, up 55.4% from a year earlier. Net income was $1.1B, a net margin of 29.3%. At June 30, 2026 it held $127.8M in cash against $932.5M of debt. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 6, 2026.
What White Mountains Insurance Group Ltd does
White Mountains Insurance Group Ltd is registered with the SEC under industry code SIC 6331 (Fire, Marine & Casualty Insurance). Its shares trade on NYSE under the ticker WTM.
Revenue and profit by year
Key figures
| Fiscal year | Revenue | Net income | Diluted EPS | Free cash flow |
|---|---|---|---|---|
| 2025 | $3.7B | $1.1B | $430.14 | n/a |
| 2024 | $2.2B | $230.4M | $89.79 | n/a |
| 2023 | $2.2B | $509.2M | $198.60 | n/a |
| 2022 | $1.2B | $792.8M | $276.96 | n/a |
| 2021 | $614.4M | -$275.4M | -$89.46 | n/a |
| 2020 | $895.6M | $708.7M | $226.97 | n/a |
Latest SEC filings
What White Mountains Insurance Group Ltd has filed recently, newest first. Each links to the original document on SEC EDGAR.
- August 27, 2026
- August 26, 2026Form N-PX filing N-PX
- August 12, 2026Form 13F-HR filing 13F-HR
- August 6, 2026Quarterly report 10-Q · period to June 30, 2026
- August 6, 2026
- June 30, 2026
- June 5, 2026
- May 21, 2026
- May 15, 2026
- May 12, 2026Form 13F-HR filing 13F-HR
Questions about WTM
What does White Mountains Insurance Group Ltd do?
White Mountains Insurance Group Ltd is registered with the SEC under industry code SIC 6331 (Fire, Marine & Casualty Insurance). Its shares trade on NYSE under the ticker WTM.
Is White Mountains Insurance Group Ltd profitable?
Yes. Over the twelve months to June 30, 2026 it reported net income of $1.1B on revenue of $3.8B, a net margin of 29.3%.
How much revenue does White Mountains Insurance Group Ltd make?
Over the twelve months to June 30, 2026 White Mountains Insurance Group Ltd reported revenue of $3.8B. That is 55.4% more than a year earlier.
When did White Mountains Insurance Group Ltd last report?
Its most recent periodic report is the quarterly report (10-Q) filed on August 6, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the insider trade from August 31, 2026.
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Follow WTM: get an email when it filesWhere the numbers come from
Financial figures are the values White Mountains Insurance Group Ltd tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.
Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.