White Mountains Insurance Group Ltd
WTM- Exchange
- NYSE
- Industry
- Fire, Marine & Casualty Insurance
- SEC CIK
- 0000776867
No open-market purchases or sales by White Mountains Insurance Group Ltd insiders were filed in the last 90 days; 356 institutions reported holding it in 13F filings for Q2 2026, worth $4.57B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.
Q4 2023 vs. Q3 2023
How the institutions holding White Mountains Insurance Group Ltd changed between Q3 2023 and Q4 2023.
All holders in Q4 2023All holders in Q3 2023
| Measure | Q3 2023 | Of which not filed for Q4 2023 | Q4 2023 | Change |
|---|---|---|---|---|
| Holders | 272 | 4 | 295 | +27 |
| Shares | 2.27M | 1.00K | 2.27M | +4.34K (+0.2%) |
| Value | $3.40B | $1.50M | $3.42B | +$26.4M (+0.8%) |
4 institutions that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so the changes leave them out.
New holders (42)
Institutions that held White Mountains Insurance Group Ltd at the end of Q4 2023 but not at the end of Q3 2023.
Sold out (15)
Institutions that held White Mountains Insurance Group Ltd at the end of Q3 2023 and filed for Q4 2023 without it.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| Franklin Resources Inc | 1,886 | $2.82M |
| ExodusPoint Capital Management, LP | 1,067 | $1.60M |
| Quantedge Capital Pte Ltd | 400 | $598.3K |
| Virtu Financial LLC | 338 | $505.0K |
| Oak Thistle LLC | 257 | $384.4K |
| Jane Street Group, LLC | 241 | $360.5K |
| Wealthstar Advisors, LLC | 192 | $287.2K |
| Glenview Trust Co | 178 | $266.2K |
| National Asset Management, Inc. | 166 | $248.3K |
| Cubist Systematic Strategies, LLC | 147 | $219.3K |
| Schonfeld Strategic Advisors LLC | 142 | $212.4K |
| Kapitalo Investimentos Ltda | 92 | $137.6K |
| Point72 Asset Management, L.P. | 12 | $18.5K |
| Carmel Capital Partners, LLC | 7 | $10.5K |
| Earnest Partners LLC | 1 | $1.50K |
Not filed for Q4 2023 yet (4)
Institutions that held White Mountains Insurance Group Ltd at the end of Q3 2023 and haven't filed a 13F for Q4 2023. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2023 | Value, Q3 2023 |
|---|---|---|
| First Republic Investment Management, Inc. | 566 | $846.6K |
| Icon Wealth Partners, LLC | 222 | $332.0K |
| Pathstone Family Office, LLC | 213 | $318.6K |
| Steward Financial Group LLC | 4 | $5.00K |