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Equibles

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Position in WTM — White Mountains Insurance Group Ltd

CIK 1164508 BOSTON, MA
Back to WTM Full portfolio

Position in WTM

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$15,102,572
+$10,899,788 QoQ
Shares Held
7,284
+280.8% QoQ
Ownership
0.305%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#51
of 354 holders
Holding Since
Sep 2020
5 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

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $4,745,712,107 across 35 Insurance - Property & Casualty names. WTM ranks #22 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 PGR
Progressive Corp/Oh/
 6,092,628 $1,330,934,586
2 CB
Chubb Ltd
 2,461,009 $838,564,206
3 TRV
Travelers Companies, Inc.
 2,258,732 $745,652,607
4 ALL
Allstate Corp
 1,831,091 $435,689,792
5 CINF
Cincinnati Financial Corp
 1,214,615 $224,873,821
6 WRB
Berkley W R Corp
 2,588,583 $182,572,758
7 AIZ
Assurant, Inc.
 477,030 $128,096,865
8 AFG
American Financial Group Inc
 744,635 $104,204,221

All Filings in WTM

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $15,102,572 7,284
2026-03-31 $4,202,784 1,913
2025-12-31 $1,685,282 811
2021-03-31 $780,430 700
2020-09-30 $233,700 300