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 362 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 $4.57 Billion.
| Holding | Report Date | shares Held | Holding Value (Reported) | Last Trade | Trade History |
|---|---|---|---|---|---|
|
Charles Schwab Investment Management Inc
San Francisco, CA |
Aug 12, 2025 Q2 2025 |
24,183
shares
|
$42.6 Million
0.01% of portfolio
|
Q2 2025
Reduced 2.12%
|
|
|
Raymond James & Associates
St Petersburg, FL |
Oct 18, 2024 Q3 2024 |
21,743
shares
|
$38.3 Million
0.02% of portfolio
|
Q3 2024
Reduced 4.17%
|
|
|
Mraz, Amerine & Associates, Inc.
|
Jul 22, 2025 Q2 2025 |
21,576
shares
|
$38 Million
6.59% of portfolio
|
Q1 2025
Reduced 0.19%
|
|
|
Southeastern Asset Management Inc
Memphis, TN |
Aug 14, 2025 Q2 2025 |
21,094
shares
|
$37.1 Million
2.04% of portfolio
|
Q2 2025
Added 14.12%
|
|
|
Brown Advisory Inc
|
Aug 13, 2025 Q2 2025 |
20,854
shares
|
$36.7 Million
0.05% of portfolio
|
Q2 2025
Reduced 5.54%
|
|
|
Select Equity Group, L.P.
New York, NY |
Aug 14, 2025 Q2 2025 |
17,872
shares
|
$31.5 Million
0.16% of portfolio
|
Q2 2025
Reduced 36.17%
|
|
|
Robeco Institutional Asset Management B.V.
|
Jul 18, 2025 Q2 2025 |
17,822
shares
|
$31.4 Million
0.05% of portfolio
|
Q2 2025
Reduced 6.95%
|
|
|
Pendal Group LTD
|
Jan 19, 2023 Q4 2022 |
17,788
shares
|
$31.3 Million
0.21% of portfolio
|
Q3 2022
Reduced 16.93%
|
|
|
Victory Capital Management Inc
|
Aug 13, 2025 Q2 2025 |
17,640
shares
|
$31.1 Million
0.02% of portfolio
|
Q2 2025
Added 9.63%
|
|
|
Envestnet Asset Management Inc
|
Jul 31, 2025 Q2 2025 |
17,511
shares
|
$30.8 Million
0.01% of portfolio
|
Q2 2025
Added 1.4%
|
|
|
Northern Trust Corp
Chicago, IL |
Aug 13, 2025 Q2 2025 |
17,405
shares
|
$30.6 Million
0.0% of portfolio
|
Q2 2025
Reduced 4.48%
|
|
|
Elkhorn Partners Limited Partnership
Omaha, NE |
Aug 14, 2025 Q2 2025 |
14,900
shares
|
$26.2 Million
19.52% of portfolio
|
Q2 2025
Reduced 0.03%
|
|
|
Wcm Investment Management, LLC
Laguna Beach, CA |
Jul 28, 2025 Q2 2025 |
13,097
shares
|
$23.1 Million
0.06% of portfolio
|
Q2 2025
Reduced 1.12%
|
|
|
Scout Investments, Inc.
|
Nov 12, 2024 Q3 2024 |
12,839
shares
|
$22.6 Million
0.64% of portfolio
|
Q3 2024
Reduced 14.25%
|
|
|
Ubs Asset Management Americas Inc
Chicago, IL |
Aug 14, 2025 Q2 2025 |
12,276
shares
|
$21.6 Million
0.0% of portfolio
|
Q2 2025
Added 8.76%
|
|
|
Speece Thorson Capital Group Inc
|
Aug 05, 2025 Q2 2025 |
11,383
shares
|
$20 Million
4.16% of portfolio
|
Q2 2025
Added 2.01%
|
|
|
Horizon Kinetics Asset Management LLC
|
Aug 12, 2025 Q2 2025 |
10,971
shares
|
$19.3 Million
0.27% of portfolio
|
Q2 2025
Reduced 3.3%
|
|
|
California Public Employees Retirement System
Sacramento, CA |
Aug 13, 2025 Q2 2025 |
10,394
shares
|
$18.3 Million
0.01% of portfolio
|
Q2 2025
Reduced 9.89%
|
|
|
Wells Fargo & Company
San Francisco, CA |
Aug 14, 2025 Q2 2025 |
9,587
shares
|
$16.9 Million
0.0% of portfolio
|
Q2 2025
Added 2.53%
|
|
|
Thompson Siegel & Walmsley LLC
|
Aug 06, 2025 Q2 2025 |
8,305
shares
|
$14.6 Million
0.25% of portfolio
|
Q2 2025
Reduced 0.14%
|
|
|
Gw&K Investment Management, LLC
Boston, MA |
Aug 11, 2025 Q2 2025 |
8,272
shares
|
$14.6 Million
0.13% of portfolio
|
Q2 2025
Reduced 2.3%
|
|
|
Aqr Capital Management LLC
Greenwich, CT |
Aug 14, 2025 Q2 2025 |
8,084
shares
|
$14.2 Million
0.01% of portfolio
|
Q2 2025
Reduced 4.8%
|
|
|
Edgestream Partners, L.P.
Princeton, NJ |
Aug 13, 2025 Q2 2025 |
7,809
shares
|
$13.7 Million
0.4% of portfolio
|
Q2 2025
Added 120.59%
|
|
|
Nuveen Asset Management, LLC
Chicago, IL |
Feb 14, 2025 Q4 2024 |
7,753
shares
|
$13.6 Million
0.0% of portfolio
|
Q4 2024
Reduced 0.06%
|
|
|
Perpetual LTD
Sydney, New South Wales, C3 |
Jul 11, 2025 Q2 2025 |
7,727
shares
|
$13.6 Million
0.16% of portfolio
|
Q1 2025
Reduced 19.74%
|