WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) Shareholder Equity
- 2026-06-30: Common Stock, Value, IssuedUSD $2.40M; Additional Paid in CapitalUSD $563.60M; Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of TaxUSD $1.30M; Retained Earnings (Accumulated Deficit)USD $4.82B.
- 2026-03-31: Common Stock, Value, IssuedUSD $2.50M; Additional Paid in CapitalUSD $578.80M; Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of TaxUSD $1.40M; Retained Earnings (Accumulated Deficit)USD $4.79B.
- 2025-12-31: Common Stock, Value, IssuedUSD $2.50M; Additional Paid in CapitalUSD $576.50M; Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of TaxUSD $800.00K; Retained Earnings (Accumulated Deficit)USD $4.85B.
- 2025-12-24: Common Stock, Value, IssuedUSD (m); Additional Paid in CapitalUSD (m); Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of TaxUSD (m); Retained Earnings (Accumulated Deficit)USD (m).
WHITE MOUNTAINS INSURANCE GROUP, LTD Shareholder Equity
Filed components and totals, with each concept and unit kept separate. Components can overlap; they are not added together. Missing disclosures remain (m). Original concept pages retain their detailed breakdowns and history.
| Period end | Common Stock, Value, Issued USD | Additional Paid in Capital USD | Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax USD | Retained Earnings (Accumulated Deficit) USD | Stockholders' Equity Attributable to Parent USD | Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest USD | Treasury Stock Acquired, Average Cost Per Share USD/shares | Additional Paid in Capital, Common Stock USD | Accumulated Other Comprehensive Income (Loss), Net of Tax USD | APIC, Share-based Payment Arrangement, Increase for Cost Recognition USD |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $2.40M | $563.60M | $1.30M | $4.82B | $5.39B | $6.12B | (m) | (m) | (m) | (m) |
| 2026-03-31 | $2.50M | $578.80M | $1.40M | $4.79B | $5.37B | $6.04B | (m) | (m) | (m) | (m) |
| 2025-12-31 | $2.50M | $576.50M | $800.00K | $4.85B | $5.43B | $6.12B | 12 month · 2.01K | (m) | (m) | (m) |
| 2025-12-24 | (m) | (m) | (m) | (m) | (m) | (m) | 2.08K | (m) | (m) | (m) |
| 2025-09-30 | $2.60M | $582.00M | $0.00 | $4.18B | $4.77B | $5.58B | (m) | (m) | (m) | (m) |
| 2025-06-30 | $2.60M | $574.00M | $300.00K | $4.07B | $4.64B | $5.34B | (m) | (m) | (m) | (m) |
| 2025-03-31 | $2.60M | $564.50M | $-500.00K | $3.94B | $4.51B | $5.14B | (m) | (m) | (m) | (m) |
| 2024-12-31 | $2.60M | $563.80M | $-1.70M | $3.92B | $4.48B | $5.13B | 12 month · 1.51K | (m) | (m) | (m) |
| 2024-09-30 | $2.60M | $560.70M | $-1.00M | $4.05B | $4.61B | $5.26B | (m) | (m) | (m) | (m) |
| 2024-06-30 | $2.60M | $558.70M | $-1.80M | $3.86B | $4.42B | $4.87B | (m) | (m) | (m) | (m) |
| 2024-03-31 | $2.60M | $551.90M | $-1.80M | $3.92B | $4.47B | $4.89B | (m) | (m) | (m) | (m) |
| 2023-12-31 | $2.60M | $548.70M | $-1.60M | $3.69B | $4.24B | $4.56B | 12 month · 1.35K | (m) | $-1.60M | (m) |
| 2023-09-30 | $2.60M | $544.90M | (m) | $3.40B | $3.95B | $4.16B | (m) | (m) | $-2.70M | (m) |
| 2023-06-30 | $2.60M | $540.60M | (m) | $3.38B | $3.92B | $4.13B | (m) | (m) | $-1.70M | (m) |
| 2023-03-31 | $2.60M | $535.20M | (m) | $3.37B | $3.90B | $4.09B | (m) | (m) | $-2.70M | (m) |
| 2022-12-31 | $2.60M | $536.00M | $-3.50M | $3.21B | $3.75B | $3.94B | 12 month · 1.34K | $536.00M | $-3.50M | (m) |
| 2022-09-30 | $2.60M | $532.70M | (m) | $3.18B | $3.71B | $3.87B | (m) | (m) | $-3.20M | (m) |
| 2022-09-26 | (m) | (m) | (m) | (m) | (m) | (m) | 1.40K | (m) | (m) | (m) |
| 2022-06-30 | $2.90M | $600.30M | (m) | $2.73B | $3.32B | $3.49B | (m) | (m) | $-5.00M | (m) |
| 2022-03-31 | $3.00M | $583.30M | (m) | $2.96B | $3.54B | $3.67B | (m) | (m) | $-400.00K | (m) |
| 2021-12-31 | $3.00M | $585.90M | $5.10M | $2.96B | $3.55B | $3.70B | 12 month · 1.09K | $585.90M | $1.70M | (m) |
| 2021-09-30 | $3.00M | $583.20M | (m) | $2.94B | $3.52B | $3.65B | (m) | (m) | $200.00K | (m) |
| 2021-06-30 | $3.10M | $594.10M | (m) | $3.38B | $3.98B | $4.11B | (m) | (m) | $2.40M | (m) |
| 2021-03-31 | $3.10M | $594.80M | (m) | $3.23B | $3.83B | $3.94B | (m) | (m) | $1.30M | (m) |
| 2020-12-31 | $3.10M | $592.10M | $5.60M | $3.31B | $3.91B | $3.82B | 12 month · 858.81 | $592.10M | $-400.00K | (m) |
| 2020-09-30 | $592.10M | (m) | (m) | $2.82B | $3.41B | $3.31B | (m) | (m) | $-6.50M | 3 month · $3.60M 9 month · $12.30M |
| 2020-06-30 | $587.00M | (m) | (m) | $2.59B | $3.17B | $3.06B | (m) | (m) | $-10.30M | (m) |
| 2020-03-31 | $589.30M | (m) | (m) | $2.50B | $3.08B | $2.96B | (m) | (m) | $-10.60M | (m) |
| 2019-12-31 | $3.20M | (m) | $-2.40M | $2.67B | $3.26B | $3.14B | 12 month · 858.00 | $593.10M | $-7.20M | (m) |
| 2019-09-30 | $3.20M | (m) | $-11.30M | $2.61B | $3.19B | $3.07B | (m) | $590.00M | (m) | 3 month · $2.70M 9 month · $7.80M |
| 2019-06-30 | $3.20M | (m) | $-9.00M | $2.56B | $3.14B | $3.01B | (m) | $587.30M | (m) | (m) |
| 2019-03-31 | $3.20M | (m) | $-6.10M | $2.54B | $3.12B | $2.98B | (m) | $582.60M | (m) | (m) |
| 2018-12-31 | $3.20M | (m) | $-3.90M | $2.26B | $2.84B | $2.72B | 12 month · 877.00 | $580.80M | $-5.80M | (m) |
| 2018-09-30 | $3.20M | (m) | $-2.80M | $2.41B | $2.98B | $2.84B | (m) | $576.30M | (m) | (m) |
| 2018-06-30 | $3.20M | (m) | $-2.20M | $2.37B | $2.94B | $2.80B | (m) | $572.60M | (m) | (m) |
| 2018-03-31 | $3.80M | (m) | $-1.30M | $2.77B | $3.44B | $3.30B | (m) | $671.50M | (m) | (m) |
| 2017-12-31 | $3.80M | (m) | $-1.30M | $2.82B | $3.49B | $3.36B | 12 month · 869.00 | $666.80M | (m) | (m) |
| 2017-09-30 | $3.70M | (m) | $-1.30M | $2.80B | $3.47B | $3.34B | (m) | $665.60M | (m) | (m) |
| 2017-06-30 | $4.60M | (m) | $0.00 | $2.84B | $3.65B | $3.76B | (m) | $810.50M | (m) | (m) |
| 2017-03-31 | $4.60M | (m) | $-600.00K | $2.80B | $3.60B | $3.73B | (m) | $803.20M | (m) | (m) |
| 2016-12-31 | $4.60M | (m) | $-1.40M | $2.78B | $3.58B | $3.72B | 12 month · 802.00 | $806.10M | $-4.60M | (m) |
| 2016-09-30 | $4.60M | (m) | $-600.00K | $2.85B | $3.65B | $3.80B | (m) | $805.20M | (m) | (m) |
| 2016-06-30 | $5.00M | (m) | $-700.00K | $3.01B | $3.88B | $4.10B | (m) | $868.10M | (m) | (m) |
| 2016-03-31 | $5.40M | (m) | $-108.30M | $2.96B | $3.79B | $4.24B | (m) | $933.50M | (m) | (m) |
| 2015-12-31 | $5.60M | (m) | $-145.60M | $3.08B | $3.91B | $4.37B | 12 month · 733.00 | $972.60M | (m) | (m) |
| 2015-09-30 | $5.70M | (m) | $-142.40M | $2.89B | $3.75B | $4.21B | (m) | $992.30M | (m) | (m) |
| 2015-06-30 | $6.00M | (m) | $-123.70M | $3.07B | $3.97B | $4.46B | (m) | $1.03B | (m) | (m) |
| 2015-03-31 | $6.00M | (m) | $-167.60M | $3.08B | $4.01B | $4.54B | (m) | $1.03B | (m) | (m) |
| 2014-12-31 | $6.00M | (m) | $-79.80M | $3.01B | $4.00B | $4.54B | 12 month · 617.00 | $1.03B | (m) | (m) |
| 2014-09-30 | $6.00M | (m) | $-11.90M | $2.96B | $4.01B | $4.50B | 3 month · 626.13 9 month · 614.78 | $1.03B | (m) | (m) |
| 2014-06-30 | $6.20M | (m) | $52.50M | $2.97B | $4.11B | $4.61B | 3 month · 589.00 6 month · 588.00 | $1.05B | (m) | (m) |
| 2014-03-31 | $6.20M | (m) | $80.50M | $2.88B | $4.01B | $4.53B | 3 month · 586.00 | $1.05B | (m) | (m) |
| 2013-12-31 | $6.20M | (m) | $88.40M | $2.80B | $3.91B | $4.40B | 12 month · 564.00 | $1.04B | (m) | (m) |
| 2013-09-30 | $6.20M | (m) | $93.50M | $2.68B | $3.79B | $4.29B | 9 month · 564.00 9 month · 564.00 | $1.04B | (m) | (m) |
| 2013-06-30 | $6.20M | (m) | $47.20M | $2.63B | $3.69B | $4.19B | 3 month · 600.00 6 month · 564.00 | $1.04B | (m) | (m) |
| 2013-03-31 | $6.20M | (m) | $82.00M | $2.60B | $3.76B | $4.28B | 3 month · 564.00 | $1.03B | (m) | (m) |
| 2012-12-31 | $6.30M | (m) | $85.70M | $2.54B | $3.73B | $4.26B | 12 month · 503.00 | $1.05B | (m) | (m) |
| 2012-09-30 | $6.60M | (m) | $80.80M | $2.58B | $3.81B | $4.38B | 3 month · 528.00 9 month · 499.00 | $1.10B | (m) | (m) |
| 2012-06-30 | $6.60M | (m) | $39.50M | $2.58B | $3.74B | $4.33B | 3 month · 508.00 6 month · 497.00 | $1.10B | (m) | (m) |
| 2012-03-31 | $6.60M | (m) | $69.40M | $2.55B | $3.72B | $4.31B | 3 month · 497.00 | $1.10B | (m) | (m) |
| 2011-12-31 | $7.60M | (m) | $46.10M | $2.79B | $4.09B | $4.67B | 12 month · 390.00 | $1.25B | (m) | (m) |
| 2011-09-30 | $7.60M | (m) | $35.70M | $2.00B | $3.44B | $4.02B | (m) | $1.26B | (m) | (m) |
| 2011-06-30 | $8.00M | (m) | $117.60M | $2.10B | $3.62B | $4.22B | (m) | $1.31B | (m) | (m) |
| 2011-03-31 | $8.00M | (m) | $123.20M | $2.09B | $3.60B | $4.21B | (m) | $1.31B | (m) | (m) |
| 2010-12-31 | $8.20M | (m) | $61.40M | $2.18B | $3.65B | $4.26B | 12 month · 328.00 | $1.35B | (m) | (m) |
| 2010-09-30 | $8.30M | (m) | $57.40M | $2.13B | $3.67B | $4.27B | (m) | $1.37B | (m) | (m) |
| 2010-06-30 | $8.50M | (m) | $-69.60M | $2.11B | $3.51B | $4.16B | (m) | $1.40B | (m) | (m) |
| 2009-12-31 | $8.90M | (m) | $11.50M | $2.22B | $3.66B | $4.34B | (m) | $1.44B | (m) | (m) |
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