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WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) Gain (Loss) on Investments

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WHITE MOUNTAINS INSURANCE GROUP, LTD Gain (Loss) on Investments

WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) reported Gain (Loss) on Investments of $209.00 million for the 3-month period ending 2026-06-30, per its 10-Q filed 2026-08-06.

Financial Statements › Income Statement › Other Income

us-gaap:GainLossOnInvestments · last filed 2026-08-06

  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for the quarter ending 2026-06-30 was $209.00M, a 78.18% increase year-over-year.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for the quarter ending 2026-03-31 was -$54.40M, a 208.80% decline year-over-year.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for the quarter ending 2025-12-31 was $110.30M.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for the quarter ending 2025-09-30 was $83.90M, a 62.51% decline year-over-year.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for fiscal 2025 was $361.50M, a 95.51% increase from fiscal 2024.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for fiscal 2024 was $184.90M, a 57.42% decline from fiscal 2023.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for fiscal 2023 was $434.20M.
  • WHITE MOUNTAINS INSURANCE GROUP, LTD gain (loss) on investments for fiscal 2022 was -$191.50M.
Period endGain (Loss) on Investments 3 monthGain (Loss) on Investments 3 month as first filedGain (Loss) on Investments 6 monthGain (Loss) on Investments 6 month as first filedGain (Loss) on Investments 9 monthGain (Loss) on Investments 9 month as first filedGain (Loss) on Investments 12 monthGain (Loss) on Investments 12 month as first filed
2026-06-30$209.00M
10-Q · filed 2026-08-06
$154.60M
10-Q · filed 2026-08-06
$264.90M
derived: sum of 3 quarters · filed 2026-08-06
$348.80M
derived: sum of 4 quarters · filed 2026-08-06
2026-03-31-$54.40M
10-Q · filed 2026-05-06
$55.90M
derived: sum of 2 quarters · filed 2026-05-06
$139.80M
derived: sum of 3 quarters · filed 2026-05-06
$257.10M
derived: sum of 4 quarters · filed 2026-08-06
2025-12-31$110.30M
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27
$194.20M
derived: sum of 2 quarters · filed 2026-02-27
$311.50M
derived: sum of 3 quarters · filed 2026-08-06
$361.50M
10-K · filed 2026-02-27
2025-09-30$83.90M
10-Q · filed 2025-11-06
$201.20M
derived: sum of 2 quarters · filed 2026-08-06
$251.20M
10-Q · filed 2025-11-06
$45.70M
derived: sum of 4 quarters · filed 2026-08-06
2025-06-30$117.30M
10-Q · filed 2026-08-06
$167.30M
10-Q · filed 2026-08-06
-$38.20M
derived: sum of 3 quarters · filed 2026-08-06
$185.60M
derived: sum of 4 quarters · filed 2026-08-06
2025-03-31$50.00M
10-Q · filed 2026-05-06
-$155.50M
derived: sum of 2 quarters · filed 2026-05-06
$68.30M
derived: sum of 3 quarters · filed 2026-05-06
$8.10M
derived: sum of 4 quarters · filed 2026-05-06
2024-12-31-$205.50M
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27
$18.30M
derived: sum of 2 quarters · filed 2026-02-27
-$41.90M
derived: sum of 3 quarters · filed 2026-02-27
$184.90M
10-K · filed 2026-02-27
2024-09-30$223.80M
10-Q · filed 2025-11-06
$163.60M
derived: sum of 2 quarters · filed 2025-11-06
$390.40M
10-Q · filed 2025-11-06
$673.40M
derived: sum of 4 quarters · filed 2026-02-27
2024-06-30-$60.20M
10-Q · filed 2025-08-07
$166.60M
10-Q · filed 2025-08-07
$449.60M
derived: sum of 3 quarters · filed 2026-02-27
$391.30M
derived: sum of 4 quarters · filed 2026-02-27
2024-03-31$226.80M
10-Q · filed 2025-05-07
$509.80M
derived: sum of 2 quarters · filed 2026-02-27
$451.50M
derived: sum of 3 quarters · filed 2026-02-27
$462.90M
derived: sum of 4 quarters · filed 2026-02-27
2023-12-31$283.00M
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27
$224.70M
derived: sum of 2 quarters · filed 2026-02-27
$236.10M
derived: sum of 3 quarters · filed 2026-02-27
$434.20M
10-K · filed 2026-02-27
2023-09-30-$58.30M
10-Q · filed 2024-11-06
-$46.90M
derived: sum of 2 quarters · filed 2024-11-06
$151.20M
10-Q · filed 2024-11-06
$214.90M
derived: sum of 4 quarters · filed 2025-02-28
2023-06-30$11.40M
10-Q · filed 2024-08-07
-$77.30M
10-Q · filed 2023-08-07
$209.50M
10-Q · filed 2024-08-07
$7.90M
10-Q · filed 2023-08-07
$273.20M
derived: sum of 3 quarters · filed 2025-02-28
$225.20M
derived: sum of 4 quarters · filed 2025-02-28
2023-03-31$198.10M
10-Q · filed 2024-05-09
$85.20M
10-Q · filed 2023-05-09
$261.80M
derived: sum of 2 quarters · filed 2025-02-28
$213.80M
derived: sum of 3 quarters · filed 2025-02-28
$100.30M
derived: sum of 4 quarters · filed 2025-02-28
2022-12-31$63.70M
derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-28
$15.70M
derived: sum of 2 quarters · filed 2025-02-28
-$97.80M
derived: sum of 3 quarters · filed 2025-02-28
-$191.50M
10-K · filed 2025-02-28
-$93.00M
10-K · filed 2023-02-27
2022-09-30-$48.00M
10-Q · filed 2023-11-06
-$18.60M
10-Q · filed 2022-11-07
-$161.50M
derived: sum of 2 quarters · filed 2023-11-06
-$255.20M
10-Q · filed 2023-11-06
-$113.30M
10-Q · filed 2022-11-07
-$63.30M
derived: sum of 4 quarters · filed 2024-02-26
2022-06-30-$113.50M
10-Q · filed 2023-08-07
-$94.70M
10-Q · filed 2023-08-07
-$15.30M
derived: sum of 3 quarters · filed 2024-02-26
-$412.10M
derived: sum of 4 quarters · filed 2024-02-26
2022-03-31$18.80M
10-Q · filed 2023-05-09
$98.20M
derived: sum of 2 quarters · filed 2024-02-26
-$298.60M
derived: sum of 3 quarters · filed 2024-02-26
-$185.60M
derived: sum of 4 quarters · filed 2024-02-26
2021-12-31$79.40M
derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-26
-$317.40M
derived: sum of 2 quarters · filed 2024-02-26
-$204.40M
derived: sum of 3 quarters · filed 2024-02-26
-$246.10M
10-K · filed 2024-02-26
-$380.30M
10-K · filed 2023-02-27
2021-09-30-$396.80M
10-Q · filed 2022-11-07
-$283.80M
derived: sum of 2 quarters · filed 2022-11-07
-$325.50M
10-Q · filed 2022-11-07
$58.80M
derived: sum of 4 quarters · filed 2023-02-27
2021-06-30$113.00M
10-Q · filed 2022-08-08
$172.60M
10-Q · filed 2021-08-06
$71.30M
10-Q · filed 2022-08-08
$132.00M
10-Q · filed 2021-08-06
$455.60M
derived: sum of 3 quarters · filed 2023-02-27
$762.20M
derived: sum of 4 quarters · filed 2023-02-27
2021-03-31-$40.60M
10-Q · filed 2021-05-10
$342.60M
derived: sum of 2 quarters · filed 2023-02-27
$649.20M
derived: sum of 3 quarters · filed 2023-02-27
$802.10M
derived: sum of 4 quarters · filed 2023-02-27
2020-12-31$383.20M
derived: 10-K 12 month − 10-Q 9 month · filed 2023-02-27
$689.80M
derived: sum of 2 quarters · filed 2023-02-27
$842.70M
derived: sum of 3 quarters · filed 2023-02-27
$686.00M
10-K · filed 2023-02-27
$716.80M
10-K · filed 2021-02-26
2020-09-30$306.60M
10-Q · filed 2020-11-06
$459.50M
derived: sum of 2 quarters · filed 2021-08-06
$302.80M
10-Q · filed 2020-11-06
$388.20M
derived: sum of 4 quarters · filed 2021-08-06
2020-06-30$152.90M
10-Q · filed 2021-08-06
-$3.80M
10-Q · filed 2021-08-06
$81.60M
derived: sum of 3 quarters · filed 2021-08-06
$148.60M
derived: sum of 4 quarters · filed 2021-08-06
2020-03-31-$156.70M
10-Q · filed 2021-05-10
-$71.30M
derived: sum of 2 quarters · filed 2021-05-10
-$4.30M
derived: sum of 3 quarters · filed 2021-05-10
$30.90M
derived: sum of 4 quarters · filed 2021-05-10
2019-12-31$85.40M
derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-26
$152.40M
derived: sum of 2 quarters · filed 2021-02-26
$187.60M
derived: sum of 3 quarters · filed 2021-02-26
$433.20M
10-K · filed 2021-02-26
2019-09-30$67.00M
10-Q · filed 2020-11-06
$102.20M
derived: sum of 2 quarters · filed 2020-11-06
$347.80M
10-Q · filed 2020-11-06
$216.60M
derived: sum of 4 quarters · filed 2021-02-26
2019-06-30$35.20M
derived: 10-Q 6 month − 10-Q 3 month · filed 2020-08-07
$280.80M
10-Q · filed 2020-08-07
$149.60M
derived: sum of 3 quarters · filed 2021-02-26
$215.70M
derived: sum of 4 quarters · filed 2021-02-26
2019-03-31$245.60M
10-Q · filed 2020-05-08
$114.40M
derived: sum of 2 quarters · filed 2021-02-26
$180.50M
derived: sum of 3 quarters · filed 2021-02-26
$191.00M
derived: sum of 4 quarters · filed 2021-02-26
2018-12-31-$131.20M
derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-26
-$65.10M
derived: sum of 2 quarters · filed 2021-02-26
-$54.60M
derived: sum of 3 quarters · filed 2021-02-26
-$108.30M
10-K · filed 2021-02-26
2018-09-30$66.10M
10-Q · filed 2018-11-05
$76.60M
derived: sum of 2 quarters · filed 2018-11-05
$22.90M
10-Q · filed 2019-11-06
$53.70M
derived: sum of 4 quarters · filed 2020-03-02
2018-06-30$10.50M
10-Q · filed 2018-08-07
-$43.20M
10-Q · filed 2019-08-06
-$12.40M
derived: sum of 3 quarters · filed 2020-03-02
$20.10M
derived: sum of 4 quarters · filed 2020-03-02
2018-03-31-$53.70M
10-Q · filed 2019-05-06
-$22.90M
derived: sum of 2 quarters · filed 2020-03-02
$9.60M
derived: sum of 3 quarters · filed 2020-03-02
$43.30M
derived: sum of 4 quarters · filed 2020-03-02
2017-12-31$30.80M
derived: 10-K 12 month − 10-Q 9 month · filed 2020-03-02
$63.30M
derived: sum of 2 quarters · filed 2020-03-02
$97.00M
derived: sum of 3 quarters · filed 2020-03-02
$133.30M
10-K · filed 2020-03-02
2017-09-30$32.50M
10-Q · filed 2018-11-05
$66.20M
derived: sum of 2 quarters · filed 2018-11-05
$102.50M
10-Q · filed 2018-11-05
$47.90M
derived: sum of 4 quarters · filed 2019-02-27
2017-06-30$33.70M
10-Q · filed 2018-08-07
$70.00M
10-Q · filed 2018-08-07
$15.40M
derived: sum of 3 quarters · filed 2019-02-27
$26.30M
derived: sum of 4 quarters · filed 2019-02-27
2017-03-31$36.30M
10-Q · filed 2018-05-02
$51.30M
10-Q · filed 2017-05-02
-$18.30M
derived: sum of 2 quarters · filed 2019-02-27
-$7.40M
derived: sum of 3 quarters · filed 2019-02-27
-$4.00M
derived: sum of 4 quarters · filed 2019-02-27
2016-12-31-$54.60M
derived: 10-K 12 month − 10-Q 9 month · filed 2019-02-27
-$43.70M
derived: sum of 2 quarters · filed 2019-02-27
-$40.30M
derived: sum of 3 quarters · filed 2019-02-27
-$27.40M
10-K · filed 2019-02-27
$10.30M
10-K · filed 2017-02-27
2016-09-30$10.90M
10-Q · filed 2017-11-08
$26.40M
10-Q · filed 2016-11-02
$14.30M
derived: sum of 2 quarters · filed 2017-11-08
$27.20M
10-Q · filed 2017-11-08
$84.00M
10-Q · filed 2016-11-02
$338.20M
derived: sum of 4 quarters · filed 2018-02-28
2016-06-30$3.40M
10-Q · filed 2017-08-04
$28.10M
10-Q · filed 2016-08-03
$16.30M
10-Q · filed 2017-08-04
$57.60M
10-Q · filed 2016-08-03
$327.30M
derived: sum of 3 quarters · filed 2018-02-28
$283.40M
derived: sum of 4 quarters · filed 2018-02-28
2016-03-31$29.50M
10-Q · filed 2017-05-02
$323.90M
derived: sum of 2 quarters · filed 2018-02-28
$280.00M
derived: sum of 3 quarters · filed 2018-02-28
$265.00M
derived: sum of 4 quarters · filed 2018-02-28
2015-12-31$294.40M
derived: 10-K 12 month − 10-Q 9 month · filed 2018-02-28
$250.50M
derived: sum of 2 quarters · filed 2018-02-28
$235.50M
derived: sum of 3 quarters · filed 2018-02-28
$260.50M
10-K · filed 2018-02-28
$225.40M
10-K · filed 2016-02-29
2015-09-30-$43.90M
10-Q · filed 2016-11-02
-$58.90M
derived: sum of 2 quarters · filed 2016-11-02
-$33.90M
10-Q · filed 2016-11-02
-$19.80M
derived: sum of 4 quarters · filed 2017-02-27
2015-06-30-$15.00M
10-Q · filed 2016-08-03
-$61.10M
10-Q · filed 2015-08-03
$10.00M
10-Q · filed 2016-08-03
$42.30M
10-Q · filed 2015-08-03
$24.10M
derived: sum of 3 quarters · filed 2017-02-27
-$3.40M
derived: sum of 4 quarters · filed 2017-02-27
2015-03-31$25.00M
10-Q · filed 2016-05-02
$103.40M
10-Q · filed 2015-05-04
$39.10M
derived: sum of 2 quarters · filed 2017-02-27
$11.60M
derived: sum of 3 quarters · filed 2017-02-27
$125.50M
derived: sum of 4 quarters · filed 2017-02-27
2014-12-31$14.10M
derived: 10-K 12 month − 10-Q 9 month · filed 2017-02-27
-$13.40M
derived: sum of 2 quarters · filed 2017-02-27
$100.50M
derived: sum of 3 quarters · filed 2017-02-27
$78.50M
10-K · filed 2017-02-27
$283.90M
10-K · filed 2015-02-27
2014-09-30-$27.50M
10-Q · filed 2015-11-02
$20.80M
10-Q · filed 2014-10-29
$86.40M
derived: sum of 2 quarters · filed 2015-11-02
$64.40M
10-Q · filed 2015-11-02
$198.50M
10-Q · filed 2014-10-29
$218.00M
derived: sum of 4 quarters · filed 2016-02-29
2014-06-30$113.90M
10-Q · filed 2015-08-03
$177.70M
10-Q · filed 2015-08-03
$245.50M
derived: sum of 3 quarters · filed 2016-02-29
$273.70M
derived: sum of 4 quarters · filed 2016-02-29
2014-03-31$63.80M
10-Q · filed 2015-05-04
$131.60M
derived: sum of 2 quarters · filed 2016-02-29
$159.80M
derived: sum of 3 quarters · filed 2016-02-29
$122.50M
derived: sum of 4 quarters · filed 2016-02-29
2013-12-31$67.80M
derived: 10-K 12 month − 10-Q 9 month · filed 2016-02-29
$96.00M
derived: sum of 2 quarters · filed 2016-02-29
$58.70M
derived: sum of 3 quarters · filed 2016-02-29
$133.90M
10-K · filed 2016-02-29
$161.70M
10-K · filed 2014-02-28
2013-09-30$28.20M
10-Q · filed 2014-10-29
-$9.10M
derived: sum of 2 quarters · filed 2014-10-29
$66.10M
10-Q · filed 2014-10-29
$61.10M
derived: sum of 4 quarters · filed 2015-02-27
2013-06-30-$37.30M
10-Q · filed 2014-07-29
$37.90M
10-Q · filed 2014-07-29
$32.90M
derived: sum of 3 quarters · filed 2015-02-27
$105.60M
derived: sum of 4 quarters · filed 2015-02-27
2013-03-31$75.20M
10-Q · filed 2014-04-28
$70.20M
derived: sum of 2 quarters · filed 2015-02-27
$142.90M
derived: sum of 3 quarters · filed 2015-02-27
$134.80M
derived: sum of 4 quarters · filed 2015-02-27
2012-12-31-$5.00M
derived: 10-K 12 month − 10-Q 9 month · filed 2015-02-27
$67.70M
derived: sum of 2 quarters · filed 2015-02-27
$59.60M
derived: sum of 3 quarters · filed 2015-02-27
$118.20M
10-K · filed 2015-02-27
2012-09-30$72.70M
10-Q · filed 2013-10-28
$64.60M
derived: sum of 2 quarters · filed 2013-10-28
$123.20M
10-Q · filed 2012-10-30
$160.90M
derived: sum of 4 quarters · filed 2014-02-28
2012-06-30-$8.10M
10-Q · filed 2013-07-30
$50.50M
10-Q · filed 2013-07-30
$88.20M
derived: sum of 3 quarters · filed 2014-02-28
$91.10M
derived: sum of 4 quarters · filed 2014-02-28
2012-03-31$58.60M
10-Q · filed 2013-04-29
$96.30M
derived: sum of 2 quarters · filed 2014-02-28
$99.20M
derived: sum of 3 quarters · filed 2014-02-28
$142.00M
derived: sum of 4 quarters · filed 2014-02-28
2011-12-31$37.70M
derived: 10-K 12 month − 10-Q 9 month · filed 2014-02-28
$40.60M
derived: sum of 2 quarters · filed 2014-02-28
$83.40M
derived: sum of 3 quarters · filed 2014-02-28
$74.10M
10-K · filed 2014-02-28
2011-09-30$2.90M
10-Q · filed 2012-10-30
$1.70M
10-Q · filed 2011-10-28
$45.70M
derived: sum of 2 quarters · filed 2012-10-30
$36.40M
10-Q · filed 2012-10-30
$78.30M
10-Q · filed 2011-10-28
$9.40M
derived: sum of 4 quarters · filed 2013-03-01
2011-06-30$42.80M
10-Q · filed 2012-07-27
$57.30M
10-Q · filed 2011-07-29
$33.60M
10-Q · filed 2012-07-27
$76.60M
10-Q · filed 2011-07-29
$6.50M
derived: sum of 3 quarters · filed 2013-03-01
$18.10M
derived: sum of 4 quarters · filed 2013-03-01
2011-03-31-$9.20M
10-Q · filed 2012-04-27
$22.70M
10-Q · filed 2011-04-29
-$36.30M
derived: sum of 2 quarters · filed 2013-03-01
-$24.70M
derived: sum of 3 quarters · filed 2013-03-01
-$13.60M
derived: sum of 4 quarters · filed 2013-03-01
2010-12-31-$27.10M
derived: 10-K 12 month − 10-Q 9 month · filed 2013-03-01
-$15.50M
derived: sum of 2 quarters · filed 2013-03-01
-$4.40M
derived: sum of 3 quarters · filed 2013-03-01
$77.60M
10-K · filed 2013-03-01
$95.90M
10-K · filed 2011-02-28
2010-09-30$11.60M
10-Q · filed 2011-10-28
-$2.50M
10-Q · filed 2010-10-29
$22.70M
derived: sum of 2 quarters · filed 2011-10-28
$104.70M
10-Q · filed 2011-10-28
$86.30M
10-Q · filed 2010-10-29
$132.00M
derived: sum of 4 quarters · filed 2011-10-28
2010-06-30$11.10M
10-Q · filed 2011-07-29
$1.80M
10-Q · filed 2010-07-30
$93.10M
10-Q · filed 2011-07-29
$88.80M
10-Q · filed 2010-07-30
$120.40M
derived: sum of 3 quarters · filed 2011-07-29
$291.10M
derived: sum of 4 quarters · filed 2011-07-29
2010-03-31$87.00M
10-Q · filed 2011-04-29
$109.30M
derived: sum of 2 quarters · filed 2011-04-29
$280.00M
derived: sum of 3 quarters · filed 2011-04-29
$494.90M
derived: sum of 4 quarters · filed 2011-04-29
2009-12-31$22.30M
derived: 10-K 12 month − 10-Q 9 month · filed 2011-02-28
$193.00M
derived: sum of 2 quarters · filed 2011-02-28
$407.90M
derived: sum of 3 quarters · filed 2011-02-28
$384.60M
10-K · filed 2011-02-28
2009-09-30$170.70M
10-Q · filed 2010-10-29
$385.60M
derived: sum of 2 quarters · filed 2010-10-29
$362.30M
10-Q · filed 2010-10-29
2009-06-30$214.90M
10-Q · filed 2010-07-30
$191.60M
10-Q · filed 2010-07-30
2008-12-31-$1.11B
10-K · filed 2011-02-28

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