# White Mountains Insurance Group, Ltd. (WTM)

- Sector: Financials · Industry: Insurance Property and Casualty
- SEC CIK: 0000776867 ([filings on EDGAR](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000776867))
- Full page: https://inspectstocks.com/stocks/wtm
- Data as of: price 2026-09-28; newest filing used 2026-08-06; latest fiscal period ended 2026-06-30

## Grade

**B+** on the balance-sheet rubric used for lenders, 4 of 5 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Profitable | passed | $1.1B |  |
| Earnings growing overall | failed | $1.1B | $1.1B |
| Earnings growing recently | passed | $1.1B | $1.1B |
| Earns well on its assets | passed | 8.1% |  |
| Book value per share growing | passed | $2,140.79 | $1,325.77 |

Business quality (the + / − mark): 4 of 4 checks passed.

| Check | Result | Now | Before |
| --- | --- | --- | --- |
| Profitable | passed | 29.3% |  |
| Healthy profit margin | passed | 29.3% |  |
| Good return on equity | passed | 20.7% |  |
| Debt under control | passed | 0.16 |  |

How the grade works: the letter counts failed checks (none → A, one → B, two → C, three → D, four or more → F). It is built from SEC filings only — the share price never enters it — and describes the business, not whether the stock is worth buying.

## Key figures

In US dollars, as filed.

| Measure | Value |
| --- | --- |
| Revenue, trailing twelve months | $3.8B |
| Net income, trailing twelve months | $1.1B |
| Net margin | 29.3% |
| Return on equity | 20.7% |
| Debt to equity | 0.16 |
| Diluted EPS, trailing twelve months | $437.13 |
| Share price | $2,014.66 |
| Market value | $4.8B |
| Price / earnings | 4.6x |
| Price / sales | 1.3x |

## More on this company

- [Overview](https://inspectstocks.com/stocks/wtm)
- [Financial statements](https://inspectstocks.com/stocks/wtm/financials)
- [Competitors](https://inspectstocks.com/stocks/wtm/peers)
- [Earnings](https://inspectstocks.com/stocks/wtm/earnings)

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Source: InspectStocks, built from the company’s own SEC filings. This describes a business — it is not investment advice and not a recommendation to buy or sell anything.