White Mountains Insurance
325 hedge funds and large institutions have $4.17B invested in White Mountains Insurance in 2025 Q2 according to their latest regulatory filings, with 33 funds opening new positions, 103 increasing their positions, 112 reducing their positions, and 26 closing their positions.
27% more first-time investments, than exits
New positions opened: 33 | Existing positions closed: 26
1% more funds holding
Funds holding: 322 → 325 (+3)
0.04% less ownership
Funds ownership: 90.18% → 90.15% (-0.04%)
8% less repeat investments, than reductions
Existing positions increased: 103 | Existing positions reduced: 112
6% less capital invested
Capital invested by funds: $4.44B → $4.17B (-$277M)
29% less funds holding in top 10
Funds holding in top 10: 7 → 5 (-2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Neuberger Berman Group
New York
|
+$47.7M |
| 2 |
CB
Cooke & Bieler
Philadelphia,
Pennsylvania
|
+$39.4M |
| 3 |
BFS
Bradley Foster & Sargent
Hartford,
Connecticut
|
+$9.82M |
| 4 |
Jane Street
New York
|
+$9.77M |
| 5 |
HF
HRT Financial
New York
|
+$9.05M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
First Trust Advisors
Wheaton,
Illinois
|
-$30.7M |
| 2 |
Select Equity Group
New York
|
-$18M |
| 3 |
Fuller & Thaler Asset Management
San Mateo,
California
|
-$16.2M |
| 4 |
APF
Alaska Permanent Fund
Juneau,
Alaska
|
-$10.4M |
| 5 |
Morgan Stanley
New York
|
-$9.9M |
WTM Hedge Fund Activity: Q2 2025 in Review
325 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in White Mountains Insurance (WTM) for Q2 2025, worth a combined $4.17B — down 6.2% from $4.44B a quarter earlier.
Buyers outnumbered sellers: 33 funds opened new WTM positions and 26 closed out — a net gain of 7 holders — while 103 added to existing stakes and 112 trimmed.
The largest buyer was Neuberger Berman Group, adding an estimated $47.7M. The largest seller was First Trust Advisors, cutting an estimated $30.7M.
- 325 institutional investors held White Mountains Insurance (WTM) as of Q2 2025, up from 322 in Q1 2025.
- Funds reported $4.17B of White Mountains Insurance stock for Q2 2025, down 6.2% quarter-over-quarter.
- 33 funds opened new White Mountains Insurance positions in Q2 2025 and 26 closed out, a net change of +7 holders.
- The largest White Mountains Insurance buyer in Q2 2025 was Neuberger Berman Group, an estimated $47.7M added.
- The largest White Mountains Insurance seller in Q2 2025 was First Trust Advisors, an estimated $30.7M sold.
Based on aggregated 13F filings for Q2 2025.