White Mountains Insurance Group Ltd
- SEC CIK
- 0000776867
- Latest filing
- Aug 12, 2026
Holdings in Q1 2026
Holdings as of Mar 31, 2026, filed May 12, 2026. Long positions only; changes compare share counts with Q4 2025.
- Positions
- 2
- 0 vs. Q4 2025
- Portfolio value
- $313.4M
- +$51.4M (+19.6%) vs. Q4 2025
| Security | Class | Shares | Value | % of portfolio | Share change | Action | History |
|---|---|---|---|---|---|---|---|
| MAXMediaAlpha, Inc. | CL A | 17,856,614 | $166.1M | 53.0% | 00.0% | Unchanged | History |
| SPYSPDR S&P 500 ETF Trust | ETF | 226,500 | $147.3M | 47.0% | +181,500+403.3% | Added | History |