WHITE MOUNTAINS INSURANCE GROUP, LTD Premiums Earned, Net
WHITE MOUNTAINS INSURANCE GROUP, LTD (WTM) reported Premiums Earned, Net of $384.60 million for the 3-month period ending 2026-06-30, per its 10-Q filed 2026-08-06.
Financial Statements › Expense Statement › Operating Expenses
us-gaap:PremiumsEarnedNet · last filed 2026-08-06
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for the quarter ending 2026-06-30 was $384.60M, a 2.51% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for the quarter ending 2026-03-31 was $384.90M, a 2.56% decline year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for the quarter ending 2025-12-31 was $449.10M, a 0.42% increase year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for the quarter ending 2025-09-30 was $557.80M, a 4.08% decline year-over-year.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for fiscal 2025 was $1.78B, a 5.05% increase from fiscal 2024.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for fiscal 2024 was $1.69B, a 17.40% increase from fiscal 2023.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for fiscal 2023 was $1.44B, a 33.83% increase from fiscal 2022.
- WHITE MOUNTAINS INSURANCE GROUP, LTD premiums earned, net for fiscal 2022 was $1.08B, a 62.10% increase from fiscal 2021.
| Period end | Premiums Earned, Net 3 month | Premiums Earned, Net 3 month as first filed | Premiums Earned, Net 6 month | Premiums Earned, Net 6 month as first filed | Premiums Earned, Net 9 month | Premiums Earned, Net 9 month as first filed | Premiums Earned, Net 12 month | Premiums Earned, Net 12 month as first filed |
|---|---|---|---|---|---|---|---|---|
| 2026-06-30 | $384.60M 10-Q · filed 2026-08-06 | $769.50M derived: sum of 2 quarters · filed 2026-08-06 | $1.22B derived: sum of 3 quarters · filed 2026-08-06 | $1.78B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2026-03-31 | $384.90M 10-Q · filed 2026-05-06 | $834.00M derived: sum of 2 quarters · filed 2026-05-06 | $1.39B derived: sum of 3 quarters · filed 2026-05-06 | $1.77B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-12-31 | $449.10M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $1.01B derived: sum of 2 quarters · filed 2026-02-27 | $1.38B derived: sum of 3 quarters · filed 2026-08-06 | $1.78B 10-K · filed 2026-02-27 | ||||
| 2025-09-30 | $557.80M 10-Q · filed 2025-11-06 | $933.00M derived: sum of 2 quarters · filed 2026-08-06 | $1.33B 10-Q · filed 2025-11-06 | $1.78B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-06-30 | $375.20M 10-Q · filed 2026-08-06 | $770.20M 10-Q · filed 2026-08-06 | $1.22B derived: sum of 3 quarters · filed 2026-08-06 | $1.80B derived: sum of 4 quarters · filed 2026-08-06 | ||||
| 2025-03-31 | $395.00M 10-Q · filed 2026-05-06 | $842.20M derived: sum of 2 quarters · filed 2026-05-06 | $1.42B derived: sum of 3 quarters · filed 2026-05-06 | $1.77B derived: sum of 4 quarters · filed 2026-05-06 | ||||
| 2024-12-31 | $447.20M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $1.03B derived: sum of 2 quarters · filed 2026-02-27 | $1.37B derived: sum of 3 quarters · filed 2026-02-27 | $1.69B 10-K · filed 2026-02-27 | ||||
| 2024-09-30 | $581.50M 10-Q · filed 2025-11-06 | $925.40M derived: sum of 2 quarters · filed 2025-11-06 | $1.24B 10-Q · filed 2025-11-06 | $1.61B derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-06-30 | $343.90M 10-Q · filed 2025-08-07 | $662.90M 10-Q · filed 2025-08-07 | $1.03B derived: sum of 3 quarters · filed 2026-02-27 | $1.54B derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2024-03-31 | $319.00M 10-Q · filed 2025-05-07 | $689.30M derived: sum of 2 quarters · filed 2026-02-27 | $1.20B derived: sum of 3 quarters · filed 2026-02-27 | $1.50B derived: sum of 4 quarters · filed 2026-02-27 | ||||
| 2023-12-31 | $370.30M derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-27 | $877.10M derived: sum of 2 quarters · filed 2026-02-27 | $1.18B derived: sum of 3 quarters · filed 2026-02-27 | $1.44B 10-K · filed 2026-02-27 | ||||
| 2023-09-30 | $506.80M 10-Q · filed 2024-11-06 | $807.80M derived: sum of 2 quarters · filed 2024-11-06 | $1.07B 10-Q · filed 2024-11-06 | $1.36B derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2023-06-30 | $301.00M 10-Q · filed 2024-08-07 | $563.80M 10-Q · filed 2024-08-07 | $856.70M derived: sum of 3 quarters · filed 2025-02-28 | $1.21B derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2023-03-31 | $262.80M 10-Q · filed 2024-05-09 | $555.70M derived: sum of 2 quarters · filed 2025-02-28 | $908.90M derived: sum of 3 quarters · filed 2025-02-28 | $1.14B derived: sum of 4 quarters · filed 2025-02-28 | ||||
| 2022-12-31 | $292.90M derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-28 | $646.10M derived: sum of 2 quarters · filed 2025-02-28 | $873.90M derived: sum of 3 quarters · filed 2025-02-28 | $1.08B 10-K · filed 2025-02-28 | ||||
| 2022-09-30 | $353.20M 10-Q · filed 2023-11-06 | $581.00M derived: sum of 2 quarters · filed 2023-11-06 | $783.80M 10-Q · filed 2023-11-06 | $992.60M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2022-06-30 | $227.80M 10-Q · filed 2023-08-07 | $430.60M 10-Q · filed 2023-08-07 | $639.40M derived: sum of 3 quarters · filed 2024-02-26 | $859.50M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2022-03-31 | $202.80M 10-Q · filed 2023-05-09 | $411.60M derived: sum of 2 quarters · filed 2024-02-26 | $631.70M derived: sum of 3 quarters · filed 2024-02-26 | $756.00M derived: sum of 4 quarters · filed 2024-02-26 | ||||
| 2021-12-31 | $208.80M derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-26 | $428.90M derived: sum of 2 quarters · filed 2024-02-26 | $553.20M derived: sum of 3 quarters · filed 2024-02-26 | $664.20M 10-K · filed 2024-02-26 | ||||
| 2021-09-30 | $220.10M 10-Q · filed 2022-11-07 | $344.40M derived: sum of 2 quarters · filed 2022-11-07 | $455.40M 10-Q · filed 2022-11-07 | $461.00M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2021-06-30 | $124.30M 10-Q · filed 2022-08-08 | $235.30M 10-Q · filed 2022-08-08 | $240.90M derived: sum of 3 quarters · filed 2023-02-27 | $247.10M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2021-03-31 | $111.00M 10-Q · filed 2022-05-06 | $116.60M derived: sum of 2 quarters · filed 2023-02-27 | $122.80M derived: sum of 3 quarters · filed 2023-02-27 | $128.40M derived: sum of 4 quarters · filed 2023-02-27 | ||||
| 2020-12-31 | $5.60M derived: 10-K 12 month − 10-Q 9 month · filed 2023-02-27 | $11.80M derived: sum of 2 quarters · filed 2023-02-27 | $17.40M derived: sum of 3 quarters · filed 2023-02-27 | $22.80M 10-K · filed 2023-02-27 | ||||
| 2020-09-30 | $6.20M 10-Q · filed 2021-11-08 | $11.80M derived: sum of 2 quarters · filed 2021-11-08 | $17.20M 10-Q · filed 2021-11-08 | $19.80M derived: sum of 4 quarters · filed 2022-02-28 | ||||
| 2020-06-30 | $5.60M 10-Q · filed 2021-08-06 | $11.00M 10-Q · filed 2021-08-06 | $13.60M derived: sum of 3 quarters · filed 2022-02-28 | $18.80M derived: sum of 4 quarters · filed 2022-02-28 | ||||
| 2020-03-31 | $5.40M 10-Q · filed 2021-05-10 | $8.00M derived: sum of 2 quarters · filed 2022-02-28 | $13.20M derived: sum of 3 quarters · filed 2022-02-28 | |||||
| 2019-12-31 | $2.60M derived: 10-K 12 month − 10-Q 9 month · filed 2022-02-28 | $7.80M derived: sum of 2 quarters · filed 2022-02-28 | $16.30M 10-K · filed 2022-02-28 | |||||
| 2019-09-30 | $5.20M 10-Q · filed 2020-11-06 | $13.70M 10-Q · filed 2020-11-06 | ||||||
| 2018-12-31 | $4.20M derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-26 | $7.50M derived: sum of 2 quarters · filed 2021-02-26 | $10.90M derived: sum of 3 quarters · filed 2021-02-26 | $13.90M 10-K · filed 2021-02-26 | ||||
| 2018-09-30 | $3.30M 10-Q · filed 2018-11-05 | $6.70M derived: sum of 2 quarters · filed 2018-11-05 | $9.70M 10-Q · filed 2018-11-05 | $13.50M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-06-30 | $3.40M 10-Q · filed 2018-08-07 | $6.40M 10-Q · filed 2018-08-07 | $10.20M derived: sum of 3 quarters · filed 2020-03-02 | $12.60M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2018-03-31 | $3.00M 10-Q · filed 2018-05-02 | $6.80M derived: sum of 2 quarters · filed 2020-03-02 | $9.20M derived: sum of 3 quarters · filed 2020-03-02 | $11.40M derived: sum of 4 quarters · filed 2020-03-02 | ||||
| 2017-12-31 | $3.80M derived: 10-K 12 month − 10-Q 9 month · filed 2020-03-02 | $6.20M derived: sum of 2 quarters · filed 2020-03-02 | $8.40M derived: sum of 3 quarters · filed 2020-03-02 | $10.40M 10-K · filed 2020-03-02 | ||||
| 2017-09-30 | $2.40M 10-Q · filed 2018-11-05 | $4.60M derived: sum of 2 quarters · filed 2018-11-05 | $6.60M 10-Q · filed 2018-11-05 | $7.60M 10-Q · filed 2017-11-08 | $10.80M derived: sum of 4 quarters · filed 2019-02-27 | |||
| 2017-06-30 | $2.20M 10-Q · filed 2018-08-07 | $5.20M 10-Q · filed 2018-08-07 | $8.40M derived: sum of 3 quarters · filed 2019-02-27 | $11.80M derived: sum of 4 quarters · filed 2019-02-27 | ||||
| 2017-03-31 | $3.00M 10-Q · filed 2018-05-02 | $264.80M 10-Q · filed 2017-05-02 | $6.20M derived: sum of 2 quarters · filed 2019-02-27 | $9.60M derived: sum of 3 quarters · filed 2019-02-27 | $12.90M derived: sum of 4 quarters · filed 2019-02-27 | |||
| 2016-12-31 | $3.20M derived: 10-K 12 month − 10-Q 9 month · filed 2019-02-27 | $6.60M derived: sum of 2 quarters · filed 2019-02-27 | $9.90M derived: sum of 3 quarters · filed 2019-02-27 | $13.40M 10-K · filed 2019-02-27 | $1.11B 10-K · filed 2017-02-27 | |||
| 2016-09-30 | $3.40M 10-Q · filed 2017-11-08 | $281.30M 10-Q · filed 2016-11-02 | $6.70M derived: sum of 2 quarters · filed 2017-11-08 | $10.20M 10-Q · filed 2017-11-08 | $838.10M 10-Q · filed 2016-11-02 | -$595.20M derived: sum of 4 quarters · filed 2018-02-28 | ||
| 2016-06-30 | $3.30M 10-Q · filed 2017-08-04 | $274.70M 10-Q · filed 2016-08-03 | $6.80M 10-Q · filed 2017-08-04 | $556.80M 10-Q · filed 2016-08-03 | -$598.60M derived: sum of 3 quarters · filed 2018-02-28 | -$313.70M derived: sum of 4 quarters · filed 2018-02-28 | ||
| 2016-03-31 | $282.10M 10-Q · filed 2017-05-02 | -$601.90M derived: sum of 2 quarters · filed 2018-02-28 | -$317.00M derived: sum of 3 quarters · filed 2018-02-28 | $4.80M derived: sum of 4 quarters · filed 2018-02-28 | ||||
| 2015-12-31 | -$884.00M derived: 10-K 12 month − 10-Q 9 month · filed 2018-02-28 | -$599.10M derived: sum of 2 quarters · filed 2018-02-28 | -$277.30M derived: sum of 3 quarters · filed 2018-02-28 | $12.00M 10-K · filed 2018-02-28 | $1.19B 10-K · filed 2016-02-29 | |||
| 2015-09-30 | $284.90M 10-Q · filed 2016-11-02 | $606.70M derived: sum of 2 quarters · filed 2016-11-02 | $896.00M 10-Q · filed 2016-11-02 | $1.20B derived: sum of 4 quarters · filed 2017-02-27 | ||||
| 2015-06-30 | $321.80M 10-Q · filed 2016-08-03 | $537.30M 10-Q · filed 2015-08-03 | $611.10M 10-Q · filed 2016-08-03 | $1.03B 10-Q · filed 2015-08-03 | $917.00M derived: sum of 3 quarters · filed 2017-02-27 | $1.22B derived: sum of 4 quarters · filed 2017-02-27 | ||
| 2015-03-31 | $289.30M 10-Q · filed 2016-05-02 | $494.30M 10-Q · filed 2015-05-04 | $595.20M derived: sum of 2 quarters · filed 2017-02-27 | $902.40M derived: sum of 3 quarters · filed 2017-02-27 | $1.41B derived: sum of 4 quarters · filed 2017-02-27 | |||
| 2014-12-31 | $305.90M derived: 10-K 12 month − 10-Q 9 month · filed 2017-02-27 | $613.10M derived: sum of 2 quarters · filed 2017-02-27 | $1.12B derived: sum of 3 quarters · filed 2017-02-27 | $1.19B 10-K · filed 2017-02-27 | $2.06B 10-K · filed 2015-02-27 | |||
| 2014-09-30 | $307.20M 10-Q · filed 2015-11-02 | $538.60M 10-Q · filed 2014-10-29 | $810.60M derived: sum of 2 quarters · filed 2015-11-02 | $879.10M 10-Q · filed 2015-11-02 | $1.54B 10-Q · filed 2014-10-29 | $931.80M derived: sum of 4 quarters · filed 2016-02-29 | ||
| 2014-06-30 | $503.40M 10-Q · filed 2015-08-03 | $997.00M 10-Q · filed 2015-08-03 | $624.60M derived: sum of 3 quarters · filed 2016-02-29 | $1.13B derived: sum of 4 quarters · filed 2016-02-29 | ||||
| 2014-03-31 | $493.60M 10-Q · filed 2015-05-04 | $121.20M derived: sum of 2 quarters · filed 2016-02-29 | $621.60M derived: sum of 3 quarters · filed 2016-02-29 | $1.12B derived: sum of 4 quarters · filed 2016-02-29 | ||||
| 2013-12-31 | -$372.40M derived: 10-K 12 month − 10-Q 9 month · filed 2016-02-29 | $128.00M derived: sum of 2 quarters · filed 2016-02-29 | $625.50M derived: sum of 3 quarters · filed 2016-02-29 | $1.12B 10-K · filed 2016-02-29 | $1.99B 10-K · filed 2014-02-28 | |||
| 2013-09-30 | $500.40M 10-Q · filed 2014-10-29 | $997.90M derived: sum of 2 quarters · filed 2014-10-29 | $1.49B 10-Q · filed 2014-10-29 | $2.01B derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-06-30 | $497.50M 10-Q · filed 2014-07-29 | $992.90M 10-Q · filed 2014-07-29 | $1.51B derived: sum of 3 quarters · filed 2015-02-27 | $2.05B derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2013-03-31 | $495.40M 10-Q · filed 2014-04-28 | $1.01B derived: sum of 2 quarters · filed 2015-02-27 | $1.55B derived: sum of 3 quarters · filed 2015-02-27 | $2.06B derived: sum of 4 quarters · filed 2015-02-27 | ||||
| 2012-12-31 | $518.30M derived: 10-K 12 month − 10-Q 9 month · filed 2015-02-27 | $1.06B derived: sum of 2 quarters · filed 2015-02-27 | $1.57B derived: sum of 3 quarters · filed 2015-02-27 | $2.06B 10-K · filed 2015-02-27 | ||||
| 2012-09-30 | $536.80M 10-Q · filed 2013-10-28 | $1.05B derived: sum of 2 quarters · filed 2013-10-28 | $1.55B 10-Q · filed 2012-10-30 | $2.04B derived: sum of 4 quarters · filed 2014-02-28 | ||||
| 2012-06-30 | $510.50M 10-Q · filed 2013-07-30 | $512.20M 10-Q · filed 2012-07-27 | $1.01B 10-Q · filed 2013-07-30 | $1.01B 10-Q · filed 2012-07-27 | $1.50B derived: sum of 3 quarters · filed 2014-02-28 | $1.99B derived: sum of 4 quarters · filed 2014-02-28 | ||
| 2012-03-31 | $498.00M 10-Q · filed 2013-04-29 | $499.00M 10-Q · filed 2012-04-27 | $989.00M derived: sum of 2 quarters · filed 2014-02-28 | $1.48B derived: sum of 3 quarters · filed 2014-02-28 | $1.96B derived: sum of 4 quarters · filed 2014-02-28 | |||
| 2011-12-31 | $491.00M derived: 10-K 12 month − 10-Q 9 month · filed 2014-02-28 | $982.10M derived: sum of 2 quarters · filed 2014-02-28 | $1.46B derived: sum of 3 quarters · filed 2014-02-28 | $1.92B 10-K · filed 2014-02-28 | ||||
| 2011-09-30 | $491.10M 10-Q · filed 2012-10-30 | $490.60M 10-Q · filed 2011-10-28 | $969.40M derived: sum of 2 quarters · filed 2012-10-30 | $1.43B 10-Q · filed 2012-10-30 | $1.44B 10-Q · filed 2011-10-28 | $1.69B derived: sum of 4 quarters · filed 2013-03-01 | ||
| 2011-06-30 | $478.30M 10-Q · filed 2012-07-27 | $495.80M 10-Q · filed 2011-07-29 | $946.10M 10-Q · filed 2012-07-27 | $982.00M 10-Q · filed 2011-07-29 | $1.20B derived: sum of 3 quarters · filed 2013-03-01 | $1.70B derived: sum of 4 quarters · filed 2013-03-01 | ||
| 2011-03-31 | $467.80M 10-Q · filed 2012-04-27 | $695.50M 10-Q · filed 2011-04-29 | $723.90M derived: sum of 2 quarters · filed 2013-03-01 | $1.22B derived: sum of 3 quarters · filed 2013-03-01 | $1.87B derived: sum of 4 quarters · filed 2013-03-01 | |||
| 2010-12-31 | $256.10M derived: 10-K 12 month − 10-Q 9 month · filed 2013-03-01 | $754.20M derived: sum of 2 quarters · filed 2013-03-01 | $1.40B derived: sum of 3 quarters · filed 2013-03-01 | $2.03B 10-K · filed 2013-03-01 | $3.16B 10-K · filed 2011-02-28 | |||
| 2010-09-30 | $498.10M 10-Q · filed 2011-10-28 | $732.70M 10-Q · filed 2010-10-29 | $1.15B derived: sum of 2 quarters · filed 2011-10-28 | $1.77B 10-Q · filed 2011-10-28 | $2.46B 10-Q · filed 2010-10-29 | $2.90B derived: sum of 4 quarters · filed 2011-10-28 | ||
| 2010-06-30 | $649.40M 10-Q · filed 2011-07-29 | $859.10M 10-Q · filed 2010-07-30 | $1.32B 10-Q · filed 2011-07-29 | $1.72B 10-Q · filed 2010-07-30 | $2.40B derived: sum of 3 quarters · filed 2011-07-29 | $3.30B derived: sum of 4 quarters · filed 2011-07-29 | ||
| 2010-03-31 | $864.70M 10-Q · filed 2011-04-29 | $1.75B derived: sum of 2 quarters · filed 2011-04-29 | $2.66B derived: sum of 3 quarters · filed 2011-04-29 | $3.55B derived: sum of 4 quarters · filed 2011-04-29 | ||||
| 2009-12-31 | $888.70M derived: 10-K 12 month − 10-Q 9 month · filed 2011-02-28 | $1.79B derived: sum of 2 quarters · filed 2011-02-28 | $2.69B derived: sum of 3 quarters · filed 2011-02-28 | $3.60B 10-K · filed 2011-02-28 | ||||
| 2009-09-30 | $902.00M 10-Q · filed 2010-10-29 | $1.80B derived: sum of 2 quarters · filed 2010-10-29 | $2.71B 10-Q · filed 2010-10-29 | |||||
| 2009-06-30 | $898.30M 10-Q · filed 2010-07-30 | $1.81B 10-Q · filed 2010-07-30 | ||||||
| 2008-12-31 | $3.71B 10-K · filed 2011-02-28 |
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