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White Mountains Insurance

320 hedge funds and large institutions have $4.38B invested in White Mountains Insurance in 2025 Q1 according to their latest regulatory filings, with 26 funds opening new positions, 102 increasing their positions, 107 reducing their positions, and 27 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more ownership

Funds ownership:

less funds holding

Funds holding:

less capital invested

Capital invested by funds: $ → $

4% less first-time investments, than exits

New positions opened: 26 | Existing positions closed: 27

5% less repeat investments, than reductions

Existing positions increased: 102 | Existing positions reduced: 107

Holders
320
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
7
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
Puts
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
76
$3.6M
77
$3.22M
78
$3.2M
79
$3.07M
80
$2.9M
81
$2.87M
82
$2.82M
83
$2.71M
84
$2.64M
85
$2.59M
86
$2.57M
87
$2.47M
88
$2.46M
89
$2.46M
90
$2.43M
91
$2.33M
92
$2.29M
93
$2.27M
94
$2.26M
95
$2.25M
96
$2.22M
97
$2.21M
98
$2.17M
99
$2.15M
100
$2.14M