White Mountains Insurance Group Ltd

NISA INVESTMENT ADVISORS, LLC WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

1/15/2026

Shares

734

Value ($000)

1,525

Weight

0.0%

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	1/15/2026	1,525	0.0%	734	12/31/2025
2025 Q3	10/23/2025	1,227	0.0%	734	9/30/2025
2025 Q2	7/31/2025	1,313	0.0%	731	6/30/2025
2025 Q1	4/30/2025	1,406	0.0%	730	3/31/2025
2024 Q4	1/17/2025	2,140	0.0%	1,100	12/31/2024
2024 Q3	10/24/2024	1,866	0.0%	1,100	9/30/2024
2024 Q2	7/19/2024	1,999	0.0%	1,100	6/30/2024
2024 Q1	5/2/2024	1,974	0.0%	1,100	3/31/2024
2023 Q4	1/25/2024	1,656	0.0%	1,100	12/31/2023
2023 Q3	11/2/2023	1,645	0.0%	1,100	9/30/2023
2023 Q2	8/11/2023	1,528	0.0%	1,100	6/30/2023
2023 Q1	5/2/2023	1,515	0.0%	1,100	3/31/2023
2022 Q4	2/2/2023	1,556	0.0%	1,100	12/31/2022
2022 Q3	11/7/2022	1,433	0.0%	1,100	9/30/2022
2022 Q2	8/3/2022	1,371	0.0%	1,100	6/30/2022
2022 Q1	4/29/2022	1,250	0.0%	1,100	3/31/2022
2021 Q4	2/3/2022	1,145	0.0%	1,100	12/31/2021
2021 Q3	10/18/2021	1,177	0.0%	1,100	9/30/2021
2021 Q2	8/6/2021	1,263	0.0%	1,100	6/30/2021
2021 Q1	4/26/2021	1,226	0.0%	1,100	3/31/2021
2020 Q4	1/25/2021	1,101	0.0%	1,100	12/31/2020
2020 Q3	10/20/2020	857	0.0%	1,100	9/30/2020
2020 Q2	7/27/2020	977	0.0%	1,100	6/30/2020
2020 Q1	4/17/2020	1,001	0.0%	1,100	3/31/2020
2019 Q4	1/17/2020	2,119	0.0%	1,900	12/31/2019
2014 Q2	7/29/2014	1,339	0.0%	2,200	6/30/2014
2014 Q1	5/1/2014	1,320	0.0%	2,200	3/31/2014
2013 Q4	1/23/2014	1,327	0.0%	2,200	12/31/2013