White Mountains Insurance
338 hedge funds and large institutions have $3.89B invested in White Mountains Insurance in 2025 Q3 according to their latest regulatory filings, with 44 funds opening new positions, 105 increasing their positions, 103 reducing their positions, and 28 closing their positions.
New
Increased
Maintained
Reduced
Closed
more first-time investments, than exits
New positions opened: | Existing positions closed:
more funds holding in top 10
Funds holding in top 10: →
more funds holding
Funds holding: →
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
0.27% more ownership
Funds ownership: 90.15% → 90.41% (+0.27%)
7% less capital invested
Capital invested by funds: $4.17B → $3.89B (-$272M)
Holders
338
Holding in Top 10
6
Calls
–
Puts
–
Top Buyers
| 1 | +$55.9M | |
| 2 | +$55.4M | |
| 3 | +$40.9M | |
| 4 |
SAM
Southeastern Asset Management
Memphis,
Tennessee
|
+$18.8M |
| 5 |
Fuller & Thaler Asset Management
San Mateo,
California
|
+$12.7M |
Top Sellers
| 1 | -$46.8M | |
| 2 | -$27.1M | |
| 3 | -$21.9M | |
| 4 |
Victory Capital Management
San Antonio,
Texas
|
-$16.3M |
| 5 |
EP
Edgestream Partners
Princeton,
New Jersey
|
-$11.5M |