WHITE MOUNTAINS INSURANCE GROUP, LTD Net Income (Loss) Available to Common Stockholders, Basic
WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) reported Net Income (Loss) Available to Common Stockholders, Basic of $194.00 million for the 3-month period ending 2026-06-30, per its 10-Q filed 2026-08-06.
Financial Statements › Income Statement › Net Income
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic · last filed 2026-08-06
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for the quarter ending 2026-06-30 was $194.00M, a 59.93% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for the quarter ending 2026-03-31 was -$30.80M, a 191.67% decline year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for the quarter ending 2025-12-31 was $822.80M.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for the quarter ending 2025-09-30 was $112.30M, a 36.37% decline year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for fiscal 2025 was $1.09B, a 379.38% increase from fiscal 2024.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for fiscal 2024 was $227.40M, a 54.70% decline from fiscal 2023.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for fiscal 2023 was $502.00M.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net income (loss) available to common stockholders, basic for fiscal 2022 was -$108.40M.
| Period end | Net Income (Loss) Available to Common Stockholders, Basic 3 month | Net Income (Loss) Available to Common Stockholders, Basic 3 month as first filed | Net Income (Loss) Available to Common Stockholders, Basic 6 month | Net Income (Loss) Available to Common Stockholders, Basic 6 month as first filed | Net Income (Loss) Available to Common Stockholders, Basic 9 month | Net Income (Loss) Available to Common Stockholders, Basic 9 month as first filed | Net Income (Loss) Available to Common Stockholders, Basic 12 month | Net Income (Loss) Available to Common Stockholders, Basic 12 month as first filed |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $194.00M 10-Q · filed 2026-08-06 | $163.50M 10-Q · filed 2026-08-06 | $986.00M derived: sum of 3 quarters · filed 2026-08-06 | $1.10B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2026-03-31 | -$30.80M 10-Q · filed 2026-05-06 | $792.00M derived: sum of 2 quarters · filed 2026-05-06 | $904.30M derived: sum of 3 quarters · filed 2026-05-06 | $1.03B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-12-31 | $822.80M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $935.10M derived: sum of 2 quarters · filed 2026-02-27 | $1.06B derived: sum of 3 quarters · filed 2026-08-06 | $1.09B 10-K · filed 2026-02-27 | ||||
| 2025-09-30 | $112.30M 10-Q · filed 2025-11-06 | $233.60M derived: sum of 2 quarters · filed 2026-08-06 | $267.30M 10-Q · filed 2025-11-06 | $138.40M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-06-30 | $121.30M 10-Q · filed 2026-08-06 | $155.00M 10-Q · filed 2026-08-06 | $26.10M derived: sum of 3 quarters · filed 2026-08-06 | $202.60M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-03-31 | $33.60M 10-Q · filed 2026-05-06 | -$95.20M derived: sum of 2 quarters · filed 2026-05-06 | $81.30M derived: sum of 3 quarters · filed 2026-05-06 | $27.40M derived: sum of 4 quarters · filed 2026-05-06 | ||||
| 2024-12-31 | -$128.80M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $47.70M derived: sum of 2 quarters · filed 2026-02-27 | -$6.20M derived: sum of 3 quarters · filed 2026-02-27 | $227.40M 10-K · filed 2026-02-27 | ||||
| 2024-09-30 | $176.50M 10-Q · filed 2025-11-06 | $122.60M derived: sum of 2 quarters · filed 2025-11-06 | $356.20M 10-Q · filed 2025-11-06 | $638.70M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-06-30 | -$53.90M 10-Q · filed 2025-08-07 | $179.60M 10-Q · filed 2025-08-07 | $462.20M derived: sum of 3 quarters · filed 2026-02-27 | $485.50M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-03-31 | $233.70M 10-Q · filed 2025-05-07 | $516.10M derived: sum of 2 quarters · filed 2026-02-27 | $539.40M derived: sum of 3 quarters · filed 2026-02-27 | $558.70M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2023-12-31 | $282.40M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $305.70M derived: sum of 2 quarters · filed 2026-02-27 | $325.00M derived: sum of 3 quarters · filed 2026-02-27 | $502.00M 10-K · filed 2026-02-27 | ||||
| 2023-09-30 | $23.30M 10-Q · filed 2024-11-06 | $42.60M derived: sum of 2 quarters · filed 2024-11-06 | $219.60M 10-Q · filed 2024-11-06 | $259.80M derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2023-06-30 | $19.30M 10-Q · filed 2024-08-07 | $19.60M 10-Q · filed 2023-08-07 | $196.40M 10-Q · filed 2024-08-07 | $199.10M 10-Q · filed 2023-08-07 | $236.50M derived: sum of 3 quarters · filed 2025-02-28 | $231.80M derived: sum of 4 quarters · filed 2025-02-28 | ||
| 2023-03-31 | $177.30M 10-Q · filed 2024-05-09 | $179.50M 10-Q · filed 2023-05-09 | $217.20M derived: sum of 2 quarters · filed 2025-02-28 | $212.50M derived: sum of 3 quarters · filed 2025-02-28 | $43.30M derived: sum of 4 quarters · filed 2025-02-28 | |||
| 2022-12-31 | $39.90M derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-28 | $35.20M derived: sum of 2 quarters · filed 2025-02-28 | -$134.00M derived: sum of 3 quarters · filed 2025-02-28 | -$108.40M 10-K · filed 2025-02-28 | $792.80M 10-K · filed 2023-02-27 | |||
| 2022-09-30 | -$4.70M 10-Q · filed 2023-11-06 | $888.20M 10-Q · filed 2022-11-07 | -$173.90M derived: sum of 2 quarters · filed 2023-11-06 | -$148.30M 10-Q · filed 2023-11-06 | $752.40M 10-Q · filed 2022-11-07 | -$101.60M derived: sum of 4 quarters · filed 2024-02-26 | ||
| 2022-06-30 | -$169.20M 10-Q · filed 2023-08-07 | -$135.80M 10-Q · filed 2023-08-07 | -$96.90M derived: sum of 3 quarters · filed 2024-02-26 | -$468.30M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2022-03-31 | $33.40M 10-Q · filed 2023-05-09 | $72.30M derived: sum of 2 quarters · filed 2024-02-26 | -$299.10M derived: sum of 3 quarters · filed 2024-02-26 | -$160.60M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2021-12-31 | $38.90M derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-26 | -$332.50M derived: sum of 2 quarters · filed 2024-02-26 | -$194.00M derived: sum of 3 quarters · filed 2024-02-26 | -$269.30M 10-K · filed 2024-02-26 | -$275.40M 10-K · filed 2022-02-28 | |||
| 2021-09-30 | -$371.40M 10-Q · filed 2022-11-07 | -$232.90M derived: sum of 2 quarters · filed 2022-11-07 | -$308.20M 10-Q · filed 2022-11-07 | $181.00M derived: sum of 4 quarters · filed 2022-11-07 | ||||
| 2021-06-30 | $138.50M 10-Q · filed 2022-08-08 | $63.20M 10-Q · filed 2022-08-08 | $552.40M derived: sum of 3 quarters · filed 2022-08-08 | $785.30M derived: sum of 4 quarters · filed 2022-08-08 | ||||
| 2021-03-31 | -$75.30M 10-Q · filed 2022-05-06 | $413.90M derived: sum of 2 quarters · filed 2022-05-06 | $646.80M derived: sum of 3 quarters · filed 2022-05-06 | $762.20M derived: sum of 4 quarters · filed 2022-05-06 | ||||
| 2020-12-31 | $489.20M 10-K · filed 2021-02-26 | $722.10M derived: sum of 2 quarters · filed 2021-11-08 | $837.50M derived: sum of 3 quarters · filed 2021-11-08 | $708.70M 10-K · filed 2023-02-27 | ||||
| 2020-09-30 | $232.90M 10-Q · filed 2021-11-08 | $348.30M derived: sum of 2 quarters · filed 2021-11-08 | $219.50M 10-Q · filed 2021-11-08 | $280.40M derived: sum of 4 quarters · filed 2021-11-08 | ||||
| 2020-06-30 | $115.40M 10-Q · filed 2021-08-06 | -$13.40M 10-Q · filed 2021-08-06 | $47.50M derived: sum of 3 quarters · filed 2021-08-06 | $96.20M derived: sum of 4 quarters · filed 2021-08-06 | ||||
| 2020-03-31 | -$128.80M 10-Q · filed 2021-05-10 | -$67.90M derived: sum of 2 quarters · filed 2021-05-10 | -$19.20M derived: sum of 3 quarters · filed 2021-05-10 | $1.30M derived: sum of 4 quarters · filed 2021-05-10 | ||||
| 2019-12-31 | $60.90M 10-K · filed 2021-02-26 | $109.60M derived: sum of 2 quarters · filed 2021-02-26 | $130.10M derived: sum of 3 quarters · filed 2021-02-26 | $414.50M 10-K · filed 2022-02-28 | ||||
| 2019-09-30 | $48.70M 10-K · filed 2021-02-26 | $69.20M derived: sum of 2 quarters · filed 2021-02-26 | $353.60M 10-Q · filed 2020-11-06 | $216.10M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2019-06-30 | $20.50M 10-K · filed 2021-02-26 | $304.90M 10-Q · filed 2020-08-07 | $167.40M derived: sum of 3 quarters · filed 2021-02-26 | $208.20M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2019-03-31 | $284.40M 10-K · filed 2021-02-26 | $146.90M derived: sum of 2 quarters · filed 2021-02-26 | $187.70M derived: sum of 3 quarters · filed 2021-02-26 | $191.20M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2018-12-31 | -$137.50M 10-K · filed 2020-03-02 | -$96.70M derived: sum of 2 quarters · filed 2020-03-02 | -$93.20M derived: sum of 3 quarters · filed 2020-03-02 | -$141.20M 10-K · filed 2021-02-26 | ||||
| 2018-09-30 | $40.80M 10-K · filed 2020-03-02 | $44.30M derived: sum of 2 quarters · filed 2020-03-02 | -$3.70M 10-Q · filed 2019-11-06 | $18.80M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-06-30 | $3.50M 10-K · filed 2020-03-02 | -$44.50M 10-Q · filed 2019-08-06 | -$22.00M derived: sum of 3 quarters · filed 2020-03-02 | $540.10M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-03-31 | -$48.00M 10-K · filed 2020-03-02 | -$25.50M derived: sum of 2 quarters · filed 2020-03-02 | $536.60M derived: sum of 3 quarters · filed 2020-03-02 | $550.20M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2017-12-31 | $22.50M 10-K · filed 2019-02-27 | $584.60M derived: sum of 2 quarters · filed 2019-02-27 | $598.20M derived: sum of 3 quarters · filed 2019-02-27 | $627.20M 10-K · filed 2020-03-02 | ||||
| 2017-09-30 | $562.10M 10-K · filed 2019-02-27 | $575.70M derived: sum of 2 quarters · filed 2019-02-27 | $604.70M 10-Q · filed 2018-11-05 | $565.80M derived: sum of 4 quarters · filed 2019-02-27 | ||||
| 2017-06-30 | $13.60M 10-K · filed 2019-02-27 | $15.50M 10-Q · filed 2017-08-04 | $42.60M 10-Q · filed 2018-08-07 | $49.80M 10-Q · filed 2017-08-04 | $3.70M derived: sum of 3 quarters · filed 2019-02-27 | $94.50M derived: sum of 4 quarters · filed 2019-02-27 | ||
| 2017-03-31 | $29.00M 10-K · filed 2019-02-27 | $34.30M 10-Q · filed 2017-05-02 | -$9.90M derived: sum of 2 quarters · filed 2019-02-27 | $80.90M derived: sum of 3 quarters · filed 2019-02-27 | $421.30M derived: sum of 4 quarters · filed 2019-02-27 | |||
| 2016-12-31 | -$38.90M 10-K · filed 2018-02-28 | -$33.30M 10-K · filed 2017-02-27 | $51.90M derived: sum of 2 quarters · filed 2018-02-28 | $392.30M derived: sum of 3 quarters · filed 2018-02-28 | $401.80M 10-K · filed 2019-02-27 | $412.50M 10-K · filed 2017-02-27 | ||
| 2016-09-30 | $90.80M 10-K · filed 2018-02-28 | $91.70M 10-Q · filed 2016-11-02 | $431.20M derived: sum of 2 quarters · filed 2018-02-28 | $440.70M 10-Q · filed 2017-11-08 | $445.80M 10-Q · filed 2016-11-02 | $708.60M derived: sum of 4 quarters · filed 2018-02-28 | ||
| 2016-06-30 | $340.40M 10-K · filed 2018-02-28 | $341.10M 10-Q · filed 2016-08-03 | $354.10M 10-Q · filed 2017-08-04 | $617.80M derived: sum of 3 quarters · filed 2018-02-28 | $558.90M derived: sum of 4 quarters · filed 2018-02-28 | |||
| 2016-03-31 | $9.50M 10-K · filed 2018-02-28 | $13.00M 10-Q · filed 2016-05-02 | $277.40M derived: sum of 2 quarters · filed 2018-02-28 | $218.50M derived: sum of 3 quarters · filed 2018-02-28 | $222.80M derived: sum of 4 quarters · filed 2018-02-28 | |||
| 2015-12-31 | $267.90M 10-K · filed 2017-02-27 | $209.00M derived: sum of 2 quarters · filed 2017-02-27 | $213.30M derived: sum of 3 quarters · filed 2017-02-27 | $295.20M 10-K · filed 2018-02-28 | $297.60M 10-K · filed 2016-02-29 | |||
| 2015-09-30 | -$58.90M 10-K · filed 2017-02-27 | -$54.60M derived: sum of 2 quarters · filed 2017-02-27 | $29.70M 10-Q · filed 2016-11-02 | $99.60M derived: sum of 4 quarters · filed 2017-02-27 | ||||
| 2015-06-30 | $4.30M 10-K · filed 2017-02-27 | $88.60M 10-Q · filed 2016-08-03 | $158.50M derived: sum of 3 quarters · filed 2017-02-27 | $209.80M derived: sum of 4 quarters · filed 2017-02-27 | ||||
| 2015-03-31 | $84.30M 10-K · filed 2017-02-27 | $154.20M derived: sum of 2 quarters · filed 2017-02-27 | $205.50M derived: sum of 3 quarters · filed 2017-02-27 | $301.00M derived: sum of 4 quarters · filed 2017-02-27 | ||||
| 2014-12-31 | $69.90M 10-K · filed 2016-02-29 | $70.00M 10-K · filed 2015-02-27 | $121.20M derived: sum of 2 quarters · filed 2016-02-29 | $216.70M derived: sum of 3 quarters · filed 2016-02-29 | $312.20M 10-K · filed 2017-02-27 | $312.70M 10-K · filed 2015-02-27 | ||
| 2014-09-30 | $51.30M 10-K · filed 2016-02-29 | $51.50M 10-Q · filed 2014-10-29 | $146.80M derived: sum of 2 quarters · filed 2016-02-29 | $242.30M 10-Q · filed 2015-11-02 | $242.70M 10-Q · filed 2014-10-29 | $360.20M derived: sum of 4 quarters · filed 2016-02-29 | ||
| 2014-06-30 | $95.50M 10-K · filed 2016-02-29 | $95.60M 10-Q · filed 2014-07-29 | $191.00M 10-Q · filed 2015-08-03 | $191.20M 10-Q · filed 2014-07-29 | $308.90M derived: sum of 3 quarters · filed 2016-02-29 | $366.10M derived: sum of 4 quarters · filed 2016-02-29 | ||
| 2014-03-31 | $95.50M 10-K · filed 2016-02-29 | $95.60M 10-Q · filed 2014-04-28 | $213.40M derived: sum of 2 quarters · filed 2016-02-29 | $270.60M derived: sum of 3 quarters · filed 2016-02-29 | $296.90M derived: sum of 4 quarters · filed 2016-02-29 | |||
| 2013-12-31 | $117.90M 10-K · filed 2015-02-27 | $175.10M derived: sum of 2 quarters · filed 2015-02-27 | $201.40M derived: sum of 3 quarters · filed 2015-02-27 | $321.60M 10-K · filed 2016-02-29 | $321.80M 10-K · filed 2014-02-28 | |||
| 2013-09-30 | $57.20M 10-K · filed 2015-02-27 | $83.50M derived: sum of 2 quarters · filed 2015-02-27 | $203.90M 10-Q · filed 2014-10-29 | $272.10M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-06-30 | $26.30M 10-K · filed 2015-02-27 | $146.70M 10-Q · filed 2014-07-29 | $214.90M derived: sum of 3 quarters · filed 2015-02-27 | $234.00M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-03-31 | $120.40M 10-K · filed 2015-02-27 | $188.60M derived: sum of 2 quarters · filed 2015-02-27 | $207.70M derived: sum of 3 quarters · filed 2015-02-27 | $233.80M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2012-12-31 | $68.20M 10-K · filed 2014-02-28 | $87.30M derived: sum of 2 quarters · filed 2014-02-28 | $113.40M derived: sum of 3 quarters · filed 2014-02-28 | $207.40M 10-K · filed 2015-02-27 | ||||
| 2012-09-30 | $19.10M 10-K · filed 2014-02-28 | $45.20M derived: sum of 2 quarters · filed 2014-02-28 | $139.20M 10-Q · filed 2012-10-30 | $939.40M derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2012-06-30 | $26.10M 10-K · filed 2014-02-28 | $119.90M 10-Q · filed 2013-07-30 | $920.30M derived: sum of 3 quarters · filed 2014-02-28 | $904.50M derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2012-03-31 | $94.00M 10-K · filed 2014-02-28 | $93.80M 10-Q · filed 2012-04-27 | $894.20M derived: sum of 2 quarters · filed 2014-02-28 | $878.40M derived: sum of 3 quarters · filed 2014-02-28 | $890.10M derived: sum of 4 quarters · filed 2014-02-28 | |||
| 2011-12-31 | $800.20M 10-K · filed 2013-03-01 | $784.40M derived: sum of 2 quarters · filed 2013-03-01 | $796.10M derived: sum of 3 quarters · filed 2013-03-01 | $767.90M 10-K · filed 2014-02-28 | ||||
| 2011-09-30 | -$15.80M 10-K · filed 2013-03-01 | -$4.10M derived: sum of 2 quarters · filed 2013-03-01 | -$32.30M 10-Q · filed 2012-10-30 | $40.60M derived: sum of 4 quarters · filed 2013-03-01 | ||||
| 2011-06-30 | $11.70M 10-K · filed 2013-03-01 | -$16.50M 10-Q · filed 2012-07-27 | $56.40M derived: sum of 3 quarters · filed 2012-02-28 | $107.10M derived: sum of 4 quarters · filed 2012-02-28 | ||||
| 2011-03-31 | -$28.20M 10-K · filed 2013-03-01 | $44.70M derived: sum of 2 quarters · filed 2012-02-28 | $95.40M derived: sum of 3 quarters · filed 2012-02-28 | $97.90M derived: sum of 4 quarters · filed 2012-02-28 | ||||
| 2010-12-31 | $72.90M 10-K · filed 2012-02-28 | $123.60M derived: sum of 2 quarters · filed 2012-02-28 | $126.10M derived: sum of 3 quarters · filed 2012-02-28 | $86.50M 10-K · filed 2013-03-01 | ||||
| 2010-09-30 | $50.70M 10-K · filed 2012-02-28 | $53.20M derived: sum of 2 quarters · filed 2012-02-28 | $13.60M 10-Q · filed 2011-10-28 | |||||
| 2010-06-30 | $2.50M 10-K · filed 2012-02-28 | -$37.10M derived: sum of 2 quarters · filed 2012-02-28 | ||||||
| 2010-03-31 | -$39.60M 10-K · filed 2012-02-28 | |||||||
| 2009-12-31 | $470.00M 10-K · filed 2012-02-28 |
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