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WHITE MOUNTAINS INSURANCE GROUP LTD
insuranceUpdated 29 days agoManaged by White Mountains Insurance Group Ltd • Latest filing Q2 2026
Portfolio value
$393.6M
Q2 2026
Filings
14
Quarterly 13F history
Top-10 concentration
100.0%
Weight of largest holdings
Annualized return
-26.5%
Implied from 13F holdings
Portfolio value history
13F-disclosed portfolio value over 14 quarters
Show data table
| Period | Portfolio value |
|---|---|
| Q1 2023 | $611.1M |
| Q2 2023 | $508.2M |
| Q3 2023 | $440.9M |
| Q4 2023 | $392.6M |
| Q1 2024 | $617.2M |
| Q2 2024 | $443.7M |
| Q3 2024 | $543.2M |
| Q4 2024 | $426.2M |
| Q1 2025 | $285.9M |
| Q2 2025 | $195.5M |
| Q3 2025 | $203.2M |
| Q4 2025 | $261.9M |
| Q1 2026 | $313.4M |
| Q2 2026 | $393.6M |
Top holdings
2 positions as of Q2 2026