Quick Answer
WHITE MOUNTAINS INSURANCE GROUP LTD reported Stockholders Equity of $5.43 billion for fiscal year 2025.
WHITE MOUNTAINS INSURANCE GROUP LTD Stockholders Equity — Annual History
| Fiscal Year | Stockholders Equity | YoY Change |
|---|---|---|
| 2025 | $5.43B | +21.0% |
| 2024 | $4.48B | +5.7% |
| 2023 | $4.24B | +13.2% |
| 2022 | $3.75B | +5.6% |
| 2021 | $3.55B | -9.2% |
| 2020 | $3.91B | +19.8% |
| 2019 | $3.26B | +14.7% |
| 2018 | $2.84B | -18.6% |
| 2017 | $3.49B | -2.5% |
| 2016 | $3.58B | -8.4% |
| 2015 | $3.91B | -2.1% |
| 2014 | $4.00B | +2.3% |
| 2013 | $3.91B | +4.7% |
| 2012 | $3.73B | -8.7% |
| 2011 | $4.09B | +11.9% |
| 2010 | $3.65B | -0.1% |
| 2009 | $3.66B | — |
Quarterly Stockholders Equity
| Quarter Ending | Stockholders Equity | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | $4.77B | +3.4% | +2.7% |
| June 30, 2025 | $4.64B | +5.0% | +3.0% |
| March 31, 2025 | $4.51B | +0.9% | +0.6% |
| December 31, 2024 | $4.48B | +5.7% | -2.8% |
| September 30, 2024 | $4.61B | +16.8% | +4.3% |
| June 30, 2024 | $4.42B | +12.8% | -1.1% |
| March 31, 2024 | $4.47B | +14.6% | +5.4% |
| December 31, 2023 | $4.24B | +13.2% | +7.4% |
- WHITE MOUNTAINS INSURANCE GROUP LTD showed an increase of +21.0% in Stockholders Equity compared to the prior fiscal year.
- Over the 2009–2025 period, WHITE MOUNTAINS INSURANCE GROUP LTD’s stockholders equity has grown by 48.3% (from $3.66 billion to $5.43 billion).
- The most recent figure is from WHITE MOUNTAINS INSURANCE GROUP LTD’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 27, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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