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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
51
$10M
52
$9.53M
53
$8.87M
54
$8.61M
55
$8.2M
56
$7.95M
57
$7.9M
58
$7.74M
59
$7.42M
60
$6.98M
61
$6.82M
62
$6.8M
63
$6.77M
64
$6.34M
65
$6.06M
66
$5.89M
67
$5.76M
68
$5.24M
69
$5.18M
70
$4.96M
71
$4.57M
72
$4.54M
73
$4.18M
74
$3.82M
75
$3.65M