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.
Members of Congress who traded WTM
Since 2020, newest trade first. Options and trades reported under an earlier ticker are included.
- Trades
- 1
- Filings
- 1
- Members
- 1
- Buys / sells
- 1 / 0
- Estimated volume
- $75.0K
- Sum of range midpoints
| Member | Trades | Buys / sells | Est. volume | Last traded | Last filed |
|---|---|---|---|---|---|
| J. French HillRepublican · House · AR | 1 | 1 / 0 | $75.0K | Jun 23, 2025 | Jul 24, 2025 |
Trades
Every reported trade in White Mountains Insurance Group Ltd, newest filings first.
Source: U.S. House Clerk and Senate Office of Public Records (eFD). Amounts are the ranges filers report.