Stocktoria
WHITE MOUNTAINS INSURANCE GROUP LTD WTM
NYSE · XNYS · stock · Fire, Marine & Casualty Insurance · website · IPO 1985-10-23
WHITE MOUNTAINS INSURANCE GROUP LTD statistics & valuation
Market cap as of 2026-06-29. Multiples are price-derived and refreshed daily; everything else is from filings.
Key ratios (by fiscal year)
| Ratio | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 |
|---|---|---|---|---|---|
| Net margin | 29.6% | 10.3% | 23.5% | 68.5% | -44.8% |
| Return on assets | 9.0% | 2.3% | 6.1% | 10.7% | -3.9% |
| Return on equity | 18.1% | 4.5% | 11.2% | 20.1% | -7.4% |
| Debt / equity | 0.14× | 0.11× | 0.12× | 0.15× | 0.11× |
| Revenue growth | 66.8% | 3.4% | 87.1% | 88.5% | -31.4% |
Source: SEC EDGAR filings · CIK 0000776867 · as of 2025-12-31. Facts from filings plus Stocktoria's own computed scores — not investment advice.