White Mountains Insurance Group Ltd

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP WTM

Report date

12/31/2025

Quarter

2025 Q4

Filed

2/13/2026

Shares

811

Value ($000)

1,685

Weight

0.0%

2020 Q3 - 2025 Q4 (3 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	1,685	0.0%	811	12/31/2025
2021 Q1	5/14/2021	780	0.0%	700	3/31/2021
2020 Q3	11/12/2020	234	0.0%	300	9/30/2020