Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest of WHITE MOUNTAINS INSURANCE GROUP LTD from 30 Jun 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: USD
Description
Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.
Summary
WHITE MOUNTAINS INSURANCE GROUP LTD quarterly Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest in USD history and change rate from 30 Jun 2010 to 31 Dec 2025.
  • WHITE MOUNTAINS INSURANCE GROUP LTD Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest for the quarter ending 31 Dec 2025 was $6,123,600,000, a 19% increase year-over-year.
Source SEC data
View on sec.gov
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Quarterly (USD)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, YoY Quarterly Change (%)

WHITE MOUNTAINS INSURANCE GROUP LTD Quarterly Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest (USD)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 $6,123,600,000 +$992,600,000 +19% 31 Dec 2025 10-K 27 Feb 2026 2025 FY
Q3 2025 $5,584,700,000 +$324,900,000 +6.2% 30 Sep 2025 10-Q 06 Nov 2025 2025 Q3
Q2 2025 $5,340,200,000 +$468,000,000 +9.6% 30 Jun 2025 10-Q 07 Aug 2025 2025 Q2
Q1 2025 $5,139,700,000 +$249,100,000 +5.1% 31 Mar 2025 10-Q 07 May 2025 2025 Q1
Q4 2024 $5,131,000,000 +$569,400,000 +12% 31 Dec 2024 10-K 27 Feb 2026 2025 FY
Q3 2024 $5,259,800,000 +$1,095,600,000 +26% 30 Sep 2024 10-Q 06 Nov 2024 2024 Q3
Q2 2024 $4,872,200,000 +$746,300,000 +18% 30 Jun 2024 10-Q 07 Aug 2024 2024 Q2
Q1 2024 $4,890,600,000 +$797,800,000 +19% 31 Mar 2024 10-Q 09 May 2024 2024 Q1
Q4 2023 $4,561,600,000 +$626,600,000 +16% 31 Dec 2023 10-K 28 Feb 2025 2024 FY
Q3 2023 $4,164,200,000 +$297,900,000 +7.7% 30 Sep 2023 10-Q 06 Nov 2023 2023 Q3
Q2 2023 $4,125,900,000 +$633,900,000 +18% 30 Jun 2023 10-Q 07 Aug 2023 2023 Q2
Q1 2023 $4,092,800,000 +$423,500,000 +12% 31 Mar 2023 10-Q 09 May 2023 2023 Q1
Q4 2022 $3,935,000,000 +$230,300,000 +6.2% 31 Dec 2022 10-K 26 Feb 2024 2023 FY
Q3 2022 $3,866,300,000 +$212,000,000 +5.8% 30 Sep 2022 10-Q 07 Nov 2022 2022 Q3
Q2 2022 $3,492,000,000 -$616,000,000 -15% 30 Jun 2022 10-Q 08 Aug 2022 2022 Q2
Q1 2022 $3,669,300,000 -$266,600,000 -6.8% 31 Mar 2022 10-Q 06 May 2022 2022 Q1
Q4 2021 $3,704,700,000 -$113,200,000 -3% 31 Dec 2021 10-K 27 Feb 2023 2022 FY
Q3 2021 $3,654,300,000 +$345,100,000 +10% 30 Sep 2021 10-Q 08 Nov 2021 2021 Q3
Q2 2021 $4,108,000,000 +$1,044,700,000 +34% 30 Jun 2021 10-Q 06 Aug 2021 2021 Q2
Q1 2021 $3,935,900,000 +$976,800,000 +33% 31 Mar 2021 10-Q 10 May 2021 2021 Q1
Q4 2020 $3,817,900,000 +$673,200,000 +21% 31 Dec 2020 10-K 28 Feb 2022 2021 FY
Q3 2020 $3,309,200,000 +$238,300,000 +7.8% 30 Sep 2020 10-Q 06 Nov 2020 2020 Q3
Q2 2020 $3,063,300,000 +$55,400,000 +1.8% 30 Jun 2020 10-Q 06 Nov 2020 2020 Q3
Q1 2020 $2,959,100,000 -$19,200,000 -0.64% 31 Mar 2020 10-Q 08 May 2020 2019 Q3
Q4 2019 $3,144,700,000 +$426,500,000 +16% 31 Dec 2019 10-K 26 Feb 2021 2020 FY
Q3 2019 $3,070,900,000 +$231,300,000 +8.1% 30 Sep 2019 10-Q 06 Nov 2020 2020 Q3
Q2 2019 $3,007,900,000 +$210,400,000 +7.5% 30 Jun 2019 10-Q 06 Nov 2020 2020 Q3
Q1 2019 $2,978,300,000 -$317,500,000 -9.6% 31 Mar 2019 10-Q 06 May 2019 2019 Q1
Q4 2018 $2,718,200,000 -$642,600,000 -19% 31 Dec 2018 10-Q 06 Nov 2020 2020 Q3
Q3 2018 $2,839,600,000 -$497,600,000 -15% 30 Sep 2018 10-Q 05 Nov 2018 2018 Q3
Q2 2018 $2,797,500,000 -$966,600,000 -26% 30 Jun 2018 10-Q 07 Aug 2018 2018 Q2
Q1 2018 $3,295,800,000 -$435,000,000 -12% 31 Mar 2018 10-Q 02 May 2018 2018 Q1
Q4 2017 $3,360,800,000 -$355,200,000 -9.6% 31 Dec 2017 10-K 27 Feb 2019 2018 FY
Q3 2017 $3,337,200,000 -$464,200,000 -12% 30 Sep 2017 10-Q 08 Nov 2017 2017 Q3
Q2 2017 $3,764,100,000 -$335,300,000 -8.2% 30 Jun 2017 10-Q 04 Aug 2017 2017 Q2
Q1 2017 $3,730,800,000 -$506,500,000 -12% 31 Mar 2017 10-Q 02 May 2018 2018 Q1
Q4 2016 $3,716,000,000 -$652,000,000 -15% 31 Dec 2016 10-K 28 Feb 2018 2017 FY
Q3 2016 $3,801,400,000 -$404,900,000 -9.6% 30 Sep 2016 10-Q 02 Nov 2016 2016 Q3
Q2 2016 $4,099,400,000 -$359,100,000 -8.1% 30 Jun 2016 10-Q 03 Aug 2016 2016 Q2
Q1 2016 $4,237,300,000 -$302,500,000 -6.7% 31 Mar 2016 10-Q 02 May 2016 2016 Q1
Q4 2015 $4,368,000,000 -$170,400,000 -3.8% 31 Dec 2015 10-K 27 Feb 2017 2016 FY
Q3 2015 $4,206,300,000 -$292,500,000 -6.5% 30 Sep 2015 10-Q 02 Nov 2015 2015 Q3
Q2 2015 $4,458,500,000 -$150,100,000 -3.3% 30 Jun 2015 10-Q 03 Aug 2015 2015 Q2
Q1 2015 $4,539,800,000 +$11,900,000 +0.26% 31 Mar 2015 10-Q 04 May 2015 2015 Q1
Q4 2014 $4,538,400,000 +$141,000,000 +3.2% 31 Dec 2014 10-K 29 Feb 2016 2015 FY
Q3 2014 $4,498,800,000 +$211,600,000 +4.9% 30 Sep 2014 10-Q 29 Oct 2014 2014 Q3
Q2 2014 $4,608,600,000 +$418,200,000 +10% 30 Jun 2014 10-Q 29 Jul 2014 2014 Q2
Q1 2014 $4,527,900,000 +$245,900,000 +5.7% 31 Mar 2014 10-Q 28 Apr 2014 2014 Q1
Q4 2013 $4,397,400,000 +$139,200,000 +3.3% 31 Dec 2013 10-K 27 Feb 2015 2014 FY
Q3 2013 $4,287,200,000 -$91,200,000 -2.1% 30 Sep 2013 10-Q 28 Oct 2013 2013 Q3
Q2 2013 $4,190,400,000 -$144,100,000 -3.3% 30 Jun 2013 10-Q 30 Jul 2013 2013 Q2
Q1 2013 $4,282,000,000 -$27,500,000 -0.64% 31 Mar 2013 10-Q 29 Apr 2013 2013 Q1
Q4 2012 $4,258,200,000 -$409,700,000 -8.8% 31 Dec 2012 10-K 28 Feb 2014 2013 FY
Q3 2012 $4,378,400,000 +$359,300,000 +8.9% 30 Sep 2012 10-Q 30 Oct 2012 2012 Q3
Q2 2012 $4,334,500,000 +$118,700,000 +2.8% 30 Jun 2012 10-Q 27 Jul 2012 2012 Q2
Q1 2012 $4,309,500,000 +$100,400,000 +2.4% 31 Mar 2012 10-Q 27 Apr 2012 2012 Q1
Q4 2011 $4,667,900,000 +$407,100,000 +9.6% 31 Dec 2011 10-K 01 Mar 2013 2012 FY
Q3 2011 $4,019,100,000 -$252,500,000 -5.9% 30 Sep 2011 10-Q 28 Oct 2011 2011 Q3
Q2 2011 $4,215,800,000 +$55,400,000 +1.3% 30 Jun 2011 10-Q 29 Jul 2011 2011 Q2
Q1 2011 $4,209,100,000 31 Mar 2011 10-Q 29 Apr 2011 2011 Q1
Q4 2010 $4,260,800,000 31 Dec 2010 10-K 28 Feb 2012 2011 FY
Q3 2010 $4,271,600,000 30 Sep 2010 10-Q 29 Oct 2010 2010 Q3
Q2 2010 $4,160,400,000 30 Jun 2010 10-Q 30 Jul 2010 2010 Q2
* An asterisk sign (*) next to the value indicates that the value is likely invalid.