Institutional Ownership White Mountains Insurance Group LTD (WTM)
This table provides information about the institutional ownership of White Mountains Insurance Group LTD (WTM). We have compiled data on the 379 institutions that hold shares in the stock, with a total of 2.55 Million shares, which have been reported (via 13F filing form) to have a value of $4.92 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Royce & Associates LP
|
Nov 12, 2025 Q3 2025 |
6,302
shares
|
$12.1 Million
0.11% of portfolio
|
Q3 2025
Reduced 4.56%
|
|
|
Quantinno Capital Management LP
New York, NY |
Nov 14, 2025 Q3 2025 |
6,054
shares
|
$11.7 Million
0.03% of portfolio
|
Q3 2025
Added 41.12%
|
|
|
Aqr Capital Management LLC
Greenwich, CT |
Nov 14, 2025 Q3 2025 |
5,913
shares
|
$11.4 Million
0.01% of portfolio
|
Q3 2025
Reduced 26.86%
|
|
|
Goldman Sachs Group Inc
New York, NY |
Nov 14, 2025 Q3 2025 |
5,911
shares
|
$11.4 Million
0.0% of portfolio
|
Q3 2025
Reduced 14.15%
|
|
|
Bradley Foster & Sargent Inc
Hartford, CT |
Nov 10, 2025 Q3 2025 |
5,546
shares
|
$10.7 Million
0.14% of portfolio
|
Q3 2025
Added 0.43%
|
|
|
Phocas Financial Corp.
Alameda, CA |
Nov 12, 2025 Q3 2025 |
5,505
shares
|
$10.6 Million
1.19% of portfolio
|
Q3 2025
Added 2.1%
|
|
|
Sei Investments CO
Oaks, PA |
Nov 13, 2025 Q3 2025 |
5,386
shares
|
$10.4 Million
0.01% of portfolio
|
Q3 2025
Added 9.81%
|
|
|
Williams Jones Wealth Management, Llc.
New York, NY |
Nov 14, 2025 Q3 2025 |
5,193
shares
|
$9.99 Million
0.1% of portfolio
|
Q1 2024
Reduced 2.81%
|
|
|
Swiss National Bank
Zurich, V8 |
Nov 13, 2025 Q3 2025 |
4,946
shares
|
$9.52 Million
0.0% of portfolio
|
Q1 2025
Reduced 1.98%
|
|
|
Jane Street Group, LLC
New York, NY |
Nov 13, 2025 Q3 2025 |
4,820
shares
|
$9.28 Million
0.0% of portfolio
|
Q3 2025
Reduced 20.61%
|
|
|
Credit Suisse Ag
Zurich, V8 |
May 10, 2024 Q1 2024 |
4,593
shares
|
$8.84 Million
0.01% of portfolio
|
Q1 2024
Added 2.07%
|
|
|
Jpmorgan Chase & CO
New York, NY |
Nov 26, 2025 Q3 2025 |
4,322
shares
|
$8.32 Million
0.0% of portfolio
|
Q3 2025
Added 117.62%
|
|
|
Rhumbline Advisers
Boston, MA |
Nov 06, 2025 Q3 2025 |
4,232
shares
|
$8.15 Million
0.01% of portfolio
|
Q3 2025
Reduced 1.12%
|
|
|
Legal & General Group PLC
London, X0 |
Nov 13, 2025 Q3 2025 |
4,049
shares
|
$7.79 Million
0.0% of portfolio
|
Q3 2025
Reduced 6.03%
|
|
|
Prospector Partners LLC
Guilford, CT |
Nov 07, 2025 Q3 2025 |
3,783
shares
|
$7.28 Million
0.82% of portfolio
|
Q3 2025
Reduced 7.19%
|
|
|
Hrt Financial LP
New York, NY |
Nov 14, 2025 Q3 2025 |
3,587
shares
|
$6.9 Million
0.03% of portfolio
|
Q3 2025
Reduced 29.49%
|
|
|
Nuveen, LLC
Charlotte, NC |
Nov 12, 2025 Q3 2025 |
3,458
shares
|
$6.66 Million
0.0% of portfolio
|
Q2 2025
Reduced 55.5%
|
|
|
Brandywine Global Investment Management, LLC
Philadelphia, PA |
Nov 13, 2025 Q3 2025 |
3,326
shares
|
$6.4 Million
0.04% of portfolio
|
Q3 2025
Reduced 5.67%
|
|
|
Invesco Ltd.
Atlanta, GA |
Nov 13, 2025 Q3 2025 |
3,317
shares
|
$6.38 Million
0.0% of portfolio
|
Q3 2025
Reduced 9.02%
|
|
|
Lee Danner & Bass Inc
|
Oct 29, 2025 Q3 2025 |
3,148
shares
|
$6.06 Million
0.39% of portfolio
|
Q1 2025
Reduced 4.02%
|
|
|
State Board Of Administration Of Florida Retirement System
|
Nov 14, 2025 Q3 2025 |
3,142
shares
|
$6.05 Million
0.01% of portfolio
|
Q3 2025
Added 20.24%
|
|
|
Creative Planning
Overland Park, KS |
Nov 14, 2025 Q3 2025 |
3,102
shares
|
$5.97 Million
0.0% of portfolio
|
Q3 2025
Added 9.15%
|
|
|
Ameriprise Financial Inc
Minneapolis, MN |
Nov 14, 2025 Q3 2025 |
3,028
shares
|
$5.83 Million
0.0% of portfolio
|
Q3 2025
Reduced 13.04%
|
|
|
Lighthouse Investment Partners, LLC
Palm Beach Gardens, FL |
Nov 14, 2025 Q3 2025 |
2,939
shares
|
$5.66 Million
0.16% of portfolio
|
Q3 2025
New holding
|
|
|
Mml Investors Services, LLC
Springfield, MA |
Nov 14, 2025 Q3 2025 |
2,852
shares
|
$5.49 Million
0.01% of portfolio
|
Q3 2025
Added 4.32%
|
|