WHITE MOUNTAINS INSURANCE GROUP, LTD Net Investment Income
WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) reported Net Investment Income of $70.90 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:NetInvestmentIncome · last filed 2026-08-06
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for the quarter ending 2026-06-30 was $70.90M, a 15.47% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for the quarter ending 2026-03-31 was $71.40M, a 19.80% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for the quarter ending 2025-12-31 was $67.80M, a 22.60% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for the quarter ending 2025-09-30 was $59.20M, a 2.60% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for fiscal 2025 was $248.00M, a 9.06% increase from fiscal 2024.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for fiscal 2024 was $227.40M, a 17.10% increase from fiscal 2023.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for fiscal 2023 was $194.20M, a 56.11% increase from fiscal 2022.
- WHITE MOUNTAINS INSURANCE GROUP, LTD net investment income for fiscal 2022 was $124.40M, a 50.79% increase from fiscal 2021.
| Period end | Net Investment Income 3 month | Net Investment Income 3 month as first filed | Net Investment Income 6 month | Net Investment Income 6 month as first filed | Net Investment Income 9 month | Net Investment Income 9 month as first filed | Net Investment Income 12 month | Net Investment Income 12 month as first filed |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $70.90M 10-Q · filed 2026-08-06 | $142.30M derived: sum of 2 quarters · filed 2026-08-06 | $210.10M derived: sum of 3 quarters · filed 2026-08-06 | $269.30M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2026-03-31 | $71.40M 10-Q · filed 2026-05-06 | $139.20M derived: sum of 2 quarters · filed 2026-05-06 | $198.40M derived: sum of 3 quarters · filed 2026-05-06 | $259.80M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-12-31 | $67.80M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $127.00M derived: sum of 2 quarters · filed 2026-02-27 | $188.40M derived: sum of 3 quarters · filed 2026-08-06 | $248.00M 10-K · filed 2026-02-27 | ||||
| 2025-09-30 | $59.20M 10-Q · filed 2025-11-06 | $120.60M derived: sum of 2 quarters · filed 2026-08-06 | $180.20M 10-Q · filed 2025-11-06 | $235.50M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-06-30 | $61.40M 10-Q · filed 2026-08-06 | $121.00M 10-Q · filed 2026-08-06 | $176.30M derived: sum of 3 quarters · filed 2026-08-06 | $234.00M derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-03-31 | $59.60M 10-Q · filed 2026-05-06 | $114.90M derived: sum of 2 quarters · filed 2026-05-06 | $172.60M derived: sum of 3 quarters · filed 2026-05-06 | $230.00M derived: sum of 4 quarters · filed 2026-05-06 | ||||
| 2024-12-31 | $55.30M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $113.00M derived: sum of 2 quarters · filed 2026-02-27 | $170.40M derived: sum of 3 quarters · filed 2026-02-27 | $227.40M 10-K · filed 2026-02-27 | ||||
| 2024-09-30 | $57.70M 10-Q · filed 2025-11-06 | $115.10M derived: sum of 2 quarters · filed 2025-11-06 | $172.10M 10-Q · filed 2025-11-06 | $236.20M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-06-30 | $57.40M 10-Q · filed 2025-08-07 | $114.40M 10-Q · filed 2025-08-07 | $178.50M derived: sum of 3 quarters · filed 2026-02-27 | $226.60M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-03-31 | $57.00M 10-Q · filed 2025-05-07 | $121.10M derived: sum of 2 quarters · filed 2026-02-27 | $169.20M derived: sum of 3 quarters · filed 2026-02-27 | $212.20M derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2023-12-31 | $64.10M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $112.20M derived: sum of 2 quarters · filed 2026-02-27 | $155.20M derived: sum of 3 quarters · filed 2026-02-27 | $194.20M 10-K · filed 2026-02-27 | ||||
| 2023-09-30 | $48.10M 10-Q · filed 2024-11-06 | $91.10M derived: sum of 2 quarters · filed 2024-11-06 | $130.10M 10-Q · filed 2024-11-06 | $174.90M derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2023-06-30 | $43.00M 10-Q · filed 2024-08-07 | $82.00M 10-Q · filed 2024-08-07 | $126.80M derived: sum of 3 quarters · filed 2025-02-28 | $160.70M derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2023-03-31 | $39.00M 10-Q · filed 2024-05-09 | $83.80M derived: sum of 2 quarters · filed 2025-02-28 | $117.70M derived: sum of 3 quarters · filed 2025-02-28 | $142.80M derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2022-12-31 | $44.80M derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-28 | $78.70M derived: sum of 2 quarters · filed 2025-02-28 | $103.80M derived: sum of 3 quarters · filed 2025-02-28 | $124.40M 10-K · filed 2025-02-28 | ||||
| 2022-09-30 | $33.90M 10-Q · filed 2023-11-06 | $59.00M derived: sum of 2 quarters · filed 2023-11-06 | $79.60M 10-Q · filed 2023-11-06 | $104.90M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2022-06-30 | $25.10M 10-Q · filed 2023-08-07 | $45.70M 10-Q · filed 2023-08-07 | $71.00M derived: sum of 3 quarters · filed 2024-02-26 | $90.50M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2022-03-31 | $20.60M 10-Q · filed 2023-05-09 | $45.90M derived: sum of 2 quarters · filed 2024-02-26 | $65.40M derived: sum of 3 quarters · filed 2024-02-26 | $82.50M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2021-12-31 | $25.30M derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-26 | $44.80M derived: sum of 2 quarters · filed 2024-02-26 | $61.90M derived: sum of 3 quarters · filed 2024-02-26 | $82.50M 10-K · filed 2024-02-26 | ||||
| 2021-09-30 | $19.50M 10-Q · filed 2022-11-07 | $36.60M derived: sum of 2 quarters · filed 2022-11-07 | $57.20M 10-Q · filed 2022-11-07 | $74.50M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2021-06-30 | $17.10M 10-Q · filed 2022-08-08 | $37.70M 10-Q · filed 2022-08-08 | $55.00M derived: sum of 3 quarters · filed 2023-02-27 | $126.20M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2021-03-31 | $20.60M 10-Q · filed 2022-05-06 | $37.90M derived: sum of 2 quarters · filed 2023-02-27 | $109.10M derived: sum of 3 quarters · filed 2023-02-27 | $128.70M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2020-12-31 | $17.30M derived: 10-K 12 month − 10-Q 9 month · filed 2023-02-27 | $88.50M derived: sum of 2 quarters · filed 2023-02-27 | $108.10M derived: sum of 3 quarters · filed 2023-02-27 | $131.00M 10-K · filed 2023-02-27 | ||||
| 2020-09-30 | $71.20M 10-Q · filed 2021-11-08 | $90.80M derived: sum of 2 quarters · filed 2021-11-08 | $113.70M 10-Q · filed 2021-11-08 | $138.00M derived: sum of 4 quarters · filed 2022-02-28 | ||||
| 2020-06-30 | $19.60M 10-Q · filed 2021-08-06 | $42.50M 10-Q · filed 2021-08-06 | $66.80M derived: sum of 3 quarters · filed 2022-02-28 | $85.20M derived: sum of 4 quarters · filed 2022-02-28 | ||||
| 2020-03-31 | $22.90M 10-Q · filed 2021-05-10 | $47.20M derived: sum of 2 quarters · filed 2022-02-28 | $65.60M derived: sum of 3 quarters · filed 2022-02-28 | $86.60M derived: sum of 4 quarters · filed 2022-02-28 | ||||
| 2019-12-31 | $24.30M derived: 10-K 12 month − 10-Q 9 month · filed 2022-02-28 | $42.70M derived: sum of 2 quarters · filed 2022-02-28 | $63.70M derived: sum of 3 quarters · filed 2022-02-28 | $79.70M 10-K · filed 2022-02-28 | ||||
| 2019-09-30 | $18.40M 10-Q · filed 2020-11-06 | $39.40M derived: sum of 2 quarters · filed 2020-11-06 | $55.40M 10-Q · filed 2020-11-06 | $69.50M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2019-06-30 | $21.00M 10-Q · filed 2020-08-07 | $37.00M 10-Q · filed 2020-08-07 | $51.10M derived: sum of 3 quarters · filed 2021-02-26 | $64.50M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2019-03-31 | $16.00M 10-Q · filed 2020-05-08 | $30.10M derived: sum of 2 quarters · filed 2021-02-26 | $43.50M derived: sum of 3 quarters · filed 2021-02-26 | $55.30M derived: sum of 4 quarters · filed 2021-02-26 | ||||
| 2018-12-31 | $14.10M derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-26 | $27.50M derived: sum of 2 quarters · filed 2021-02-26 | $39.30M derived: sum of 3 quarters · filed 2021-02-26 | $59.00M 10-K · filed 2021-02-26 | ||||
| 2018-09-30 | $13.40M 10-Q · filed 2019-11-06 | $25.20M derived: sum of 2 quarters · filed 2019-11-06 | $44.90M 10-Q · filed 2019-11-06 | $61.20M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-06-30 | $11.80M 10-Q · filed 2019-08-06 | $31.50M 10-Q · filed 2019-08-06 | $47.80M derived: sum of 3 quarters · filed 2020-03-02 | $60.00M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-03-31 | $19.70M 10-Q · filed 2019-05-06 | $36.00M derived: sum of 2 quarters · filed 2020-03-02 | $48.20M derived: sum of 3 quarters · filed 2020-03-02 | $62.90M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2017-12-31 | $16.30M derived: 10-K 12 month − 10-Q 9 month · filed 2020-03-02 | $28.50M derived: sum of 2 quarters · filed 2020-03-02 | $43.20M derived: sum of 3 quarters · filed 2020-03-02 | $56.00M 10-K · filed 2020-03-02 | ||||
| 2017-09-30 | $12.20M 10-Q · filed 2018-11-05 | $26.90M derived: sum of 2 quarters · filed 2018-11-05 | $39.70M 10-Q · filed 2018-11-05 | $53.60M derived: sum of 4 quarters · filed 2019-02-27 | ||||
| 2017-06-30 | $14.70M 10-Q · filed 2018-08-07 | $27.50M 10-Q · filed 2018-08-07 | $41.40M derived: sum of 3 quarters · filed 2019-02-27 | $51.00M derived: sum of 4 quarters · filed 2019-02-27 | ||||
| 2017-03-31 | $12.80M 10-Q · filed 2018-05-02 | $26.10M 10-Q · filed 2017-05-02 | $26.70M derived: sum of 2 quarters · filed 2019-02-27 | $36.30M derived: sum of 3 quarters · filed 2019-02-27 | $42.40M derived: sum of 4 quarters · filed 2019-02-27 | |||
| 2016-12-31 | $13.90M derived: 10-K 12 month − 10-Q 9 month · filed 2019-02-27 | $23.50M derived: sum of 2 quarters · filed 2019-02-27 | $29.60M derived: sum of 3 quarters · filed 2019-02-27 | $32.10M 10-K · filed 2019-02-27 | $86.80M 10-K · filed 2017-02-27 | |||
| 2016-09-30 | $9.60M 10-Q · filed 2017-11-08 | $22.50M 10-Q · filed 2016-11-02 | $15.70M derived: sum of 2 quarters · filed 2017-11-08 | $18.20M 10-Q · filed 2017-11-08 | $59.60M 10-Q · filed 2016-11-02 | $1.90M derived: sum of 4 quarters · filed 2018-02-28 | ||
| 2016-06-30 | $6.10M 10-Q · filed 2017-08-04 | $19.20M 10-Q · filed 2016-08-03 | $8.60M 10-Q · filed 2017-08-04 | $37.10M 10-Q · filed 2016-08-03 | -$7.70M derived: sum of 3 quarters · filed 2018-02-28 | $9.10M derived: sum of 4 quarters · filed 2018-02-28 | ||
| 2016-03-31 | $17.90M 10-Q · filed 2017-05-02 | -$13.80M derived: sum of 2 quarters · filed 2018-02-28 | $3.00M derived: sum of 3 quarters · filed 2018-02-28 | $16.20M derived: sum of 4 quarters · filed 2018-02-28 | ||||
| 2015-12-31 | -$31.70M derived: 10-K 12 month − 10-Q 9 month · filed 2018-02-28 | -$14.90M derived: sum of 2 quarters · filed 2018-02-28 | -$1.70M derived: sum of 3 quarters · filed 2018-02-28 | $10.90M 10-K · filed 2018-02-28 | $60.80M 10-K · filed 2016-02-29 | |||
| 2015-09-30 | $16.80M 10-Q · filed 2016-11-02 | $30.00M derived: sum of 2 quarters · filed 2016-11-02 | $42.60M 10-Q · filed 2016-11-02 | $57.40M derived: sum of 4 quarters · filed 2017-02-27 | ||||
| 2015-06-30 | $13.20M 10-Q · filed 2016-08-03 | $23.80M 10-Q · filed 2015-08-03 | $25.80M 10-Q · filed 2016-08-03 | $47.10M 10-Q · filed 2015-08-03 | $40.60M derived: sum of 3 quarters · filed 2017-02-27 | $54.40M derived: sum of 4 quarters · filed 2017-02-27 | ||
| 2015-03-31 | $12.60M 10-Q · filed 2016-05-02 | $23.30M 10-Q · filed 2015-05-04 | $27.40M derived: sum of 2 quarters · filed 2017-02-27 | $41.20M derived: sum of 3 quarters · filed 2017-02-27 | $70.80M derived: sum of 4 quarters · filed 2017-02-27 | |||
| 2014-12-31 | $14.80M derived: 10-K 12 month − 10-Q 9 month · filed 2017-02-27 | $28.60M derived: sum of 2 quarters · filed 2017-02-27 | $58.20M derived: sum of 3 quarters · filed 2017-02-27 | $59.50M 10-K · filed 2017-02-27 | $105.00M 10-K · filed 2015-02-27 | |||
| 2014-09-30 | $13.80M 10-Q · filed 2015-11-02 | $24.70M 10-Q · filed 2014-10-29 | $43.40M derived: sum of 2 quarters · filed 2015-11-02 | $44.70M 10-Q · filed 2015-11-02 | $78.10M 10-Q · filed 2014-10-29 | $43.40M derived: sum of 4 quarters · filed 2016-02-29 | ||
| 2014-06-30 | $29.60M 10-Q · filed 2015-08-03 | $29.10M 10-Q · filed 2014-07-29 | $54.30M 10-Q · filed 2015-08-03 | $53.40M 10-Q · filed 2014-07-29 | $29.60M derived: sum of 3 quarters · filed 2016-02-29 | $56.90M derived: sum of 4 quarters · filed 2016-02-29 | ||
| 2014-03-31 | $24.70M 10-Q · filed 2015-05-04 | $24.30M 10-Q · filed 2014-04-28 | $0.00 derived: sum of 2 quarters · filed 2016-02-29 | $27.30M derived: sum of 3 quarters · filed 2016-02-29 | $56.00M derived: sum of 4 quarters · filed 2016-02-29 | |||
| 2013-12-31 | -$24.70M derived: 10-K 12 month − 10-Q 9 month · filed 2016-02-29 | $2.60M derived: sum of 2 quarters · filed 2016-02-29 | $31.30M derived: sum of 3 quarters · filed 2016-02-29 | $59.80M 10-K · filed 2016-02-29 | $110.90M 10-K · filed 2014-02-28 | |||
| 2013-09-30 | $27.30M 10-Q · filed 2014-10-29 | $56.00M derived: sum of 2 quarters · filed 2014-10-29 | $84.50M 10-Q · filed 2014-10-29 | $118.30M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-06-30 | $28.70M 10-Q · filed 2014-07-29 | $57.20M 10-Q · filed 2014-07-29 | $91.00M derived: sum of 3 quarters · filed 2015-02-27 | $128.60M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-03-31 | $28.50M 10-Q · filed 2014-04-28 | $62.30M derived: sum of 2 quarters · filed 2015-02-27 | $99.90M derived: sum of 3 quarters · filed 2015-02-27 | $140.30M derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2012-12-31 | $33.80M derived: 10-K 12 month − 10-Q 9 month · filed 2015-02-27 | $71.40M derived: sum of 2 quarters · filed 2015-02-27 | $111.80M derived: sum of 3 quarters · filed 2015-02-27 | $153.60M 10-K · filed 2015-02-27 | ||||
| 2012-09-30 | $37.60M 10-Q · filed 2013-10-28 | $78.00M derived: sum of 2 quarters · filed 2013-10-28 | $119.80M 10-Q · filed 2012-10-30 | $166.20M derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2012-06-30 | $40.40M 10-Q · filed 2013-07-30 | $82.20M 10-Q · filed 2013-07-30 | $128.60M derived: sum of 3 quarters · filed 2014-02-28 | $171.40M derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2012-03-31 | $41.80M 10-Q · filed 2013-04-29 | $88.20M derived: sum of 2 quarters · filed 2014-02-28 | $131.00M derived: sum of 3 quarters · filed 2014-02-28 | $176.80M derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2011-12-31 | $46.40M derived: 10-K 12 month − 10-Q 9 month · filed 2014-02-28 | $89.20M derived: sum of 2 quarters · filed 2014-02-28 | $135.00M derived: sum of 3 quarters · filed 2014-02-28 | $184.50M 10-K · filed 2014-02-28 | ||||
| 2011-09-30 | $42.80M 10-Q · filed 2012-10-30 | $88.60M derived: sum of 2 quarters · filed 2012-10-30 | $138.10M 10-Q · filed 2012-10-30 | $189.60M derived: sum of 4 quarters · filed 2013-03-01 | ||||
| 2011-06-30 | $45.80M 10-Q · filed 2012-07-27 | $95.30M 10-Q · filed 2012-07-27 | $146.80M derived: sum of 3 quarters · filed 2013-03-01 | $195.70M derived: sum of 4 quarters · filed 2013-03-01 | ||||
| 2011-03-31 | $49.50M 10-Q · filed 2012-04-27 | $53.50M 10-Q · filed 2011-04-29 | $101.00M derived: sum of 2 quarters · filed 2013-03-01 | $149.90M derived: sum of 3 quarters · filed 2013-03-01 | $202.60M derived: sum of 4 quarters · filed 2013-03-01 | |||
| 2010-12-31 | $51.50M derived: 10-K 12 month − 10-Q 9 month · filed 2013-03-01 | $100.40M derived: sum of 2 quarters · filed 2013-03-01 | $153.10M derived: sum of 3 quarters · filed 2013-03-01 | $208.90M 10-K · filed 2013-03-01 | $228.50M 10-K · filed 2011-02-28 | |||
| 2010-09-30 | $48.90M 10-Q · filed 2011-10-28 | $54.70M 10-Q · filed 2010-10-29 | $101.60M derived: sum of 2 quarters · filed 2011-10-28 | $157.40M 10-Q · filed 2011-10-28 | $172.80M 10-Q · filed 2010-10-29 | $230.10M derived: sum of 4 quarters · filed 2011-10-28 | ||
| 2010-06-30 | $52.70M 10-Q · filed 2011-07-29 | $57.50M 10-Q · filed 2010-07-30 | $108.50M 10-Q · filed 2011-07-29 | $118.10M 10-Q · filed 2010-07-30 | $181.20M derived: sum of 3 quarters · filed 2011-07-29 | $247.40M derived: sum of 4 quarters · filed 2011-07-29 | ||
| 2010-03-31 | $60.60M 10-Q · filed 2011-04-29 | $128.50M derived: sum of 2 quarters · filed 2011-04-29 | $194.70M derived: sum of 3 quarters · filed 2011-04-29 | $271.90M derived: sum of 4 quarters · filed 2011-04-29 | ||||
| 2009-12-31 | $67.90M derived: 10-K 12 month − 10-Q 9 month · filed 2011-02-28 | $134.10M derived: sum of 2 quarters · filed 2011-02-28 | $211.30M derived: sum of 3 quarters · filed 2011-02-28 | $272.40M 10-K · filed 2011-02-28 | ||||
| 2009-09-30 | $66.20M 10-Q · filed 2010-10-29 | $143.40M derived: sum of 2 quarters · filed 2010-10-29 | $204.50M 10-Q · filed 2010-10-29 | |||||
| 2009-06-30 | $77.20M 10-Q · filed 2010-07-30 | $138.30M 10-Q · filed 2010-07-30 | ||||||
| 2008-12-31 | $410.30M 10-K · filed 2011-02-28 |
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