White Mountains Insurance Group Ltd
- SEC CIK
- 0000776867
- Latest filing
- Aug 12, 2026
Holdings in Q4 2025
Holdings as of Dec 31, 2025, filed Feb 12, 2026. Long positions only; changes compare share counts with Q3 2025.
- Positions
- 2
- +1 vs. Q3 2025
- Portfolio value
- $261.9M
- +$58.7M (+28.9%) vs. Q3 2025
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| MAXMediaAlpha, Inc. | CL A | 17,856,614 | $231.2M | 88.3% | 00.0% | Unchanged | History |
| SPYSPDR S&P 500 ETF Trust | ETF | 45,000 | $30.7M | 11.7% | +45,000 | New | History |