White Mountains Insurance Group Ltd

Boston Partners WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/13/2026

Shares

76,911

Value ($000)

159,728

Weight

0.2%

2013 Q4 - 2025 Q4 (28 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	2/13/2026	159,728	0.2%	76,911	12/31/2025
2025 Q3	11/13/2025	142,517	0.1%	84,445	9/30/2025
2025 Q2	8/12/2025	160,471	0.2%	89,394	6/30/2025
2025 Q1	5/13/2025	163,263	0.2%	85,236	3/31/2025
2024 Q4	2/11/2025	165,820	0.2%	85,445	12/31/2024
2024 Q3	11/12/2024	144,976	0.2%	85,097	9/30/2024
2024 Q2	8/14/2024	158,853	0.2%	87,671	6/30/2024
2024 Q1	5/28/2024	162,424	0.2%	90,594	3/31/2024
2023 Q4	2/7/2024	140,013	0.2%	92,552	12/31/2023
2023 Q3	11/8/2023	170,739	0.2%	114,499	9/30/2023
2023 Q2	8/10/2023	165,273	0.2%	118,005	6/30/2023
2023 Q1	5/9/2023	173,624	0.2%	125,537	3/31/2023
2022 Q4	2/8/2023	176,547	0.2%	124,320	12/31/2022
2022 Q3	11/9/2022	167,697	0.2%	128,012	9/30/2022
2022 Q2	8/10/2022	166,143	0.2%	133,215	6/30/2022
2022 Q1	5/10/2022	153,701	0.2%	135,408	3/31/2022
2021 Q4	2/4/2022	139,784	0.2%	137,836	12/31/2021
2021 Q3	11/5/2021	154,009	0.2%	143,832	9/30/2021
2021 Q2	8/12/2021	161,423	0.2%	140,459	6/30/2021
2021 Q1	5/10/2021	153,633	0.2%	137,195	3/31/2021
2020 Q4	2/10/2021	132,082	0.2%	131,996	12/31/2020
2020 Q3	11/13/2020	102,891	0.2%	132,081	9/30/2020
2020 Q2	8/12/2020	122,120	0.2%	137,468	6/30/2020
2020 Q1	5/13/2020	131,334	0.3%	144,411	3/31/2020
2019 Q4	2/5/2020	164,391	0.3%	147,337	12/31/2019
2014 Q2	8/8/2014	83,283	0.1%	136,880	6/30/2014
2014 Q1	5/7/2014	86,436	0.2%	144,084	3/31/2014
2013 Q4	2/6/2014	90,074	0.2%	149,357	12/31/2013