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.
Q2 2023 vs. Q1 2023
How the institutions holding White Mountains Insurance Group Ltd changed between Q1 2023 and Q2 2023.
All holders in Q2 2023All holders in Q1 2023
| Measure | Q1 2023 | Of which not filed for Q2 2023 | Q2 2023 | Change |
|---|---|---|---|---|
| Holders | 262 | 3 | 258 | −1 |
| Shares | 2.24M | 1.35K | 2.25M | +2.85K (+0.1%) |
| Value | $3.09B | $1.86M | $3.13B | +$33.8M (+1.1%) |
3 institutions that held it in Q1 2023 haven't filed for Q2 2023 yet. Not filing isn't selling, so the changes leave them out.
New holders (26)
Institutions that held White Mountains Insurance Group Ltd at the end of Q2 2023 but not at the end of Q1 2023.
Sold out (27)
Institutions that held White Mountains Insurance Group Ltd at the end of Q1 2023 and filed for Q2 2023 without it.
Not filed for Q2 2023 yet (3)
Institutions that held White Mountains Insurance Group Ltd at the end of Q1 2023 and haven't filed a 13F for Q2 2023. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q1 2023 | Value, Q1 2023 |
|---|---|---|
| Avalon Investment & Advisory | 780 | $1.07M |
| Kula Investments, LLC | 387 | $533.1K |
| Investment Management of Virginia LLC | 181 | $249.3K |