White Mountains Insurance Group Ltd

HORIZON KINETICS ASSET MANAGEMENT LLC WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/11/2026

Shares

13,121

Value ($000)

27,266

Weight

0.4%

2019 Q4 - 2025 Q4 (19 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	2/11/2026	27,266	0.4%	13,121	12/31/2025
2025 Q3	11/14/2025	21,870	0.3%	13,084	9/30/2025
2025 Q2	8/12/2025	19,701	0.2%	10,971	6/30/2025
2025 Q1	5/15/2025	21,848	0.2%	11,345	3/31/2025
2024 Q4	2/10/2025	19,624	0.2%	10,089	12/31/2024
2024 Q3	11/13/2024	12,107	0.2%	7,138	9/30/2024
2024 Q2	8/14/2024	2,481	0.0%	1,365	6/30/2024
2022 Q3	11/15/2022	371	0.0%	285	9/30/2022
2022 Q2	8/5/2022	293	0.0%	235	6/30/2022
2022 Q1	5/13/2022	722	0.0%	635	3/31/2022
2021 Q4	2/15/2022	846	0.0%	834	12/31/2021
2021 Q3	11/15/2021	1,161	0.0%	1,085	9/30/2021
2021 Q2	8/16/2021	1,186	0.0%	1,033	6/30/2021
2021 Q1	5/11/2021	1,152	0.0%	1,033	3/31/2021
2020 Q4	2/16/2021	1,034	0.0%	1,033	12/31/2020
2020 Q3	11/16/2020	805	0.0%	1,033	9/30/2020
2020 Q2	8/14/2020	567	0.0%	638	6/30/2020
2020 Q1	5/13/2020	581	0.0%	638	3/31/2020
2019 Q4	2/14/2020	712	0.0%	638	12/31/2019