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White Mountains Insurance
WTM

Overview Fund Activity

319 hedge funds and large institutions have $4.16B invested in White Mountains Insurance in 2025 Q2 according to their latest regulatory filings, with 34 funds opening new positions, 103 increasing their positions, 107 reducing their positions, and 27 closing their positions.

Holders
319
Holders Change
–
Holders Change %
0%
% of All Funds
4.28%
Holding in Top 10
5
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-28.57%
% of All Funds
0.07%
New
34
Increased
103
Reduced
107
Closed
27
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Norges Bank
1
Norges Bank
Norway
$54.8M
2
Neuberger Berman Group
2
Neuberger Berman Group
New York
$150M
3
CB
3
Cooke & Bieler
Pennsylvania
$138M
4
BFS
4
Bradley Foster & Sargent
Connecticut
$9.92M
5
Jane Street
5
Jane Street
New York
$10.9M

Top Sellers

1
First Trust Advisors
1
First Trust Advisors
Illinois
$10.2M
2
Select Equity Group
2
Select Equity Group
New York
$32.1M
3
Fuller & Thaler Asset Management
3
Fuller & Thaler Asset Management
California
$181M
4
APF
4
Alaska Permanent Fund
Alaska
$0
5
Morgan Stanley
5
Morgan Stanley
New York
$296M
Name Market Value Shares Shares
Change 		Shares
Change %
Vanguard Group
1
Vanguard Group
Pennsylvania
$447M 249,170 -946 -0.4%
Morgan Stanley
2
Morgan Stanley
New York
$296M 165,064 -5,567 -3%
Dimensional Fund Advisors
3
Dimensional Fund Advisors
Texas
$280M 155,753 -864 -0.6%
BlackRock
4
BlackRock
New York
$203M 113,158 -3,641 -3%
RRAM
5
River Road Asset Management
Kentucky
$196M 109,892 +227 +0.2%
Fuller & Thaler Asset Management
6
Fuller & Thaler Asset Management
California
$181M 100,984 -9,108 -8%
Boston Partners
7
Boston Partners
Massachusetts
$160M 89,394 +4,158 +5%
Neuberger Berman Group
8
Neuberger Berman Group
New York
$150M 83,699 +26,835 +47%
WCM
9
Wallace Capital Management
Texas
$142M 79,036 -895 -1%
CB
10
Cooke & Bieler
Pennsylvania
$138M 76,781 +22,129 +40%
FMI
11
Fiduciary Management Inc
Wisconsin
$128M 71,478 -317 -0.4%
LCOV
12
London Company of Virginia
Virginia
$124M 68,770 -388 -0.6%
T. Rowe Price Investment Management
13
T. Rowe Price Investment Management
Maryland
$113M 62,941 +475 +0.8%
State Street
14
State Street
Massachusetts
$103M 57,241 +2,297 +4%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$76.4M 42,529 +343 +0.8%
RP
16
Reinhart Partners
Wisconsin
$74.9M 41,694 -784 -2%
Bank of America
17
Bank of America
North Carolina
$70.8M 39,409 -1,646 -4%
Lord, Abbett & Co
18
Lord, Abbett & Co
New Jersey
$57.9M 32,227 -624 -2%
Raymond James Financial
19
Raymond James Financial
Florida
$55.1M 30,677 -1,047 -3%
Norges Bank
20
Norges Bank
Norway
$54.8M 30,494 +30,494 New
Allspring Global Investments
21
Allspring Global Investments
North Carolina
$53M 29,585 +4,728 +19%
CS
22
Cannell & Spears
New York
$50.9M 28,347 -321 -1%
Wellington Management Group
23
Wellington Management Group
Massachusetts
$44.3M 24,651 -787 -3%
Charles Schwab
24
Charles Schwab
California
$43.4M 24,183 -523 -2%
MAA
25
Mraz Amerine & Associates
California
$38.7M 21,576 +548 +3%
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