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BROWN ADVISORY INC

Position in WTM — White Mountains Insurance Group Ltd

CIK 1345929 BALTIMORE, MD

Position in WTM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$36,744,615
-$2,457,938 QoQ
Shares Held
17,722
-0.7% QoQ
Ownership
0.743%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#28
of 354 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in WTM Over Time

Shares Held

Position Value (USD)

Position in Insurance - Property & Casualty

Financial Services · as of Jun 30, 2026

BROWN ADVISORY INC holds $665,499,278 across 15 Insurance - Property & Casualty names. WTM ranks #3 (5.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 WTM
White Mountains Insurance Group Ltd
This page
17,722 $36,744,615

All Filings in WTM

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $36,744,615 17,722
2026-03-31 $39,202,553 17,844
2025-12-31 $39,391,135 18,956
2025-09-30 $33,985,343 20,332
2025-06-30 $37,447,944 20,854
2025-03-31 $42,514,183 22,076
2024-12-31 $43,610,191 22,421
2024-09-30 $39,265,333 23,149
2024-06-30 $41,465,120 22,815
2024-03-31 $41,486,010 23,121
2023-12-31 $24,725,809 16,429
2023-09-30 $24,991,481 16,709
2023-06-30 $13,123,810 9,449
2023-03-31 $13,874,078 10,072
2022-12-31 $4,479,183 3,167
2022-09-30 $4,006,786 3,075
2022-06-30 $3,831,849 3,075
2022-03-31 $3,668,918 3,229
2021-12-31 $3,493,899 3,446
2021-09-30 $3,761,818 3,517
2021-06-30 $4,042,213 3,521
2021-03-31 $3,921,103 3,517
2020-12-31 $3,519,321 3,517
2020-09-30 $2,883,858 3,702
2020-06-30 $3,377,837 3,804
2020-03-31 $3,458,000 3,800