White Mountains Insurance Group Ltd

WELLINGTON MANAGEMENT GROUP LLP WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/17/2026

Shares

15,928

Value ($000)

33,099

Weight

0.0%

2013 Q4 - 2025 Q4 (27 filings)

Shares History

History scope: non-option holdings only (PUT/CALL rows excluded).

All 13F Holders	Filing date	Value ($000s)	% of Holdings	Shares	Reporting period
2025 Q4	2/17/2026	33,099	0.0%	15,928	12/31/2025
2025 Q3	11/14/2025	32,112	0.0%	19,211	9/30/2025
2025 Q2	8/14/2025	44,266	0.0%	24,651	6/30/2025
2025 Q1	5/13/2025	48,989	0.0%	25,438	3/31/2025
2024 Q4	2/12/2025	97,109	0.0%	49,926	12/31/2024
2024 Q3	11/14/2024	102,917	0.0%	60,675	9/30/2024
2024 Q2	8/14/2024	126,838	0.0%	69,789	6/30/2024
2024 Q1	5/15/2024	109,463	0.0%	61,006	3/31/2024
2023 Q4	2/12/2024	101,409	0.0%	67,381	12/31/2023
2023 Q3	11/14/2023	105,926	0.0%	70,821	9/30/2023
2023 Q2	8/14/2023	110,606	0.0%	79,635	6/30/2023
2023 Q1	5/12/2023	97,422	0.0%	70,724	3/31/2023
2022 Q4	2/13/2023	117,918	0.0%	83,374	12/31/2022
2022 Q3	11/14/2022	117,285	0.0%	90,010	9/30/2022
2022 Q2	8/15/2022	231,902	0.0%	186,098	6/30/2022
2022 Q1	5/16/2022	242,044	0.0%	213,022	3/31/2022
2021 Q4	2/11/2022	224,639	0.0%	221,559	12/31/2021
2021 Q3	11/15/2021	239,443	0.0%	223,860	9/30/2021
2021 Q2	8/16/2021	271,701	0.0%	236,668	6/30/2021
2021 Q1	5/17/2021	263,078	0.0%	235,965	3/31/2021
2020 Q4	2/12/2021	250,886	0.0%	250,720	12/31/2020
2020 Q3	11/16/2020	187,625	0.0%	240,853	9/30/2020
2020 Q2	8/14/2020	224,664	0.1%	253,010	6/30/2020
2020 Q1	5/14/2020	221,954	0.1%	243,906	3/31/2020
2019 Q4	2/11/2020	276,515	0.1%	247,882	12/31/2019
2014 Q1	5/15/2014	56,887	0.0%	94,827	3/31/2014
2013 Q4	2/14/2014	11,038	0.0%	18,302	12/31/2013