White Mountains Insurance Group (WTM)
What the price implies
A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.
Fundamental grade
Five factors scored 1 to 9 from WTM's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.
Key numbers
Results from SEC filings
Fiscal years, from White Mountains Insurance Group's 10-K filings. Ten years of the full income statement, balance sheet and cash flow.
| Fiscal year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Revenue | $614M | $1.2B | $2.2B | $2.2B | $3.7B |
| Net income | -$275M | $793M | $509M | $230M | $1.1B |
| Free cash flow | — | — | — | — | — |
| EPS (diluted) | -$89.46 | $276.96 | $198.60 | $89.79 | $430.14 |
| Operating margin | -44.5% | -12.9% | 26.1% | 14.1% | 35.6% |
Where the revenue comes from
Revenue by segments, fiscal 2025. Every breakdown, year by year.
Superinvestors who own WTM
From each investor's latest 13F filing (what a 13F shows).
Insider buying
Open-market purchases by White Mountains Insurance Group's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you.
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In the full deep dive
Questions
Are White Mountains Insurance Group insiders buying the stock?
No open-market insider purchases of WTM in the last 12 months, according to SEC Form 4 filings.
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Prices and ratios as of Oct 11, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.