Every 13F-reported equity position this quarter with its quarter-over-quarter change; each row traces to the filer's 13F-HR on EDGAR.
13F holdings, latest quarter
SourceSEC EDGAR13F-HR
Every 13F-reported equity position this quarter with its quarter-over-quarter change; each row traces to the filer's 13F-HR on EDGAR.
WHITE MOUNTAINS INSURANCE GROUP LTD (CIK 776867) reported $393.6M across 2 reported positions in its SEC 13F filing for 2026-06-30. Largest positions: MAX ($224.5M, 57.03%), SPY ($169.1M, 42.97%). Source: SEC Form 13F.
| Rank | Ticker | Company | Value | % Portfolio | Shares | Action |
|---|---|---|---|---|---|---|
| 1 | MAX | MEDIAALPHA INC | $224.5M | 57.03% | 17.9M | Hold |
| 2 | SPY | SPDR S&P 500 ETF TR | $169.1M | 42.97% | 226,500 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30