StockDriftsStockDriftsTop 2 White Mountains Insurance Group LTD Holdings
| Stock | Company | % Port. | Shares | Value | Activity | Ownership | Avg. Cost | Date |
|---|---|---|---|---|---|---|---|---|
| MAX | MEDIAALPHA INC | 57.03% | 17.86M | $224.5M | +0.00%(+0) | $32.15(-59.13%) | 2026-06-30 | |
| SPY | SPDR S&P 500 ETF TR | 42.97% | 226.5K | $169.1M | +0.00%(+0) | $615.13(+25.75%) | 2026-06-30 |
| Performance Metric | 3-Year Annualized | 3-Year Cumulative | 5-Year Annualized | 5-Year Cumulative |
|---|---|---|---|---|
| Top 20 Holdings Weighted | +11.17% | +37.39% | -18.58% | -64.21% |
| Top 20 Holdings Unweighted | +18.89% | +68.06% | -15.15% | -56.02% |
White Mountains Insurance Group LTD reports $393.60M in US-listed equity holdings across 2 positions in its most recent 13F filing. Its largest disclosed positions are MAX (57.0%) and SPY (43.0%). The top 20 holdings account for 100% of reported assets. Its disclosed equity book has returned +37.39% on a three-year cumulative basis. Figures reflect the Q2 2026 filing.
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Holdings on this page are parsed from White Mountains Insurance Group LTD’s Form 13F filings with the U.S. Securities and Exchange Commission (CIK 776867). View White Mountains Insurance Group LTD’s 13F filings on SEC