White Mountains Insurance Group Ltd

AMG National Trust Bank WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/30/2026

Shares

595

Value ($000)

1,236

Weight

0.0%

2019 Q4 - 2025 Q4 (25 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	1/30/2026	1,236	0.0%	595	12/31/2025
2025 Q3	11/10/2025	964	0.0%	577	9/30/2025
2025 Q2	8/4/2025	1,033	0.0%	575	6/30/2025
2025 Q1	5/5/2025	1,105	0.0%	574	3/31/2025
2024 Q4	2/7/2025	1,104	0.0%	572	12/31/2024
2024 Q3	11/7/2024	958	0.0%	565	9/30/2024
2024 Q2	7/25/2024	1,027	0.0%	565	6/30/2024
2024 Q1	5/6/2024	1,019	0.0%	568	3/31/2024
2023 Q4	2/8/2024	856	0.0%	569	12/31/2023
2023 Q3	11/8/2023	860	0.0%	575	9/30/2023
2023 Q2	8/3/2023	1,157	0.0%	833	6/30/2023
2023 Q1	5/10/2023	1,318	0.0%	957	3/31/2023
2022 Q4	2/8/2023	1,570	0.1%	1,110	12/31/2022
2022 Q3	11/4/2022	1,429	0.1%	1,097	9/30/2022
2022 Q2	8/5/2022	1,347	0.1%	1,081	6/30/2022
2022 Q1	5/10/2022	1,250	0.0%	1,100	3/31/2022
2021 Q4	2/4/2022	985	0.0%	971	12/31/2021
2021 Q3	10/28/2021	1,039	0.0%	971	9/30/2021
2021 Q2	8/3/2021	691	0.0%	602	6/30/2021
2021 Q1	5/11/2021	670	0.0%	601	3/31/2021
2020 Q4	2/10/2021	591	0.0%	591	12/31/2020
2020 Q3	10/22/2020	474	0.0%	608	9/30/2020
2020 Q2	8/13/2020	551	0.0%	621	6/30/2020
2020 Q1	5/15/2020	596	0.0%	655	3/31/2020
2019 Q4	2/4/2020	1,264	0.1%	1,133	12/31/2019