Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2025-02-28 | SCHEDULE | Nonko Eugene | 10.80% | 5,996,864 | view → | |
| 2024-05-03 | SC | WHITE MOUNTAINS INSURANCE GROUP LTD | — | — | view → | |
| 2024-01-03 | SC | WHITE MOUNTAINS INSURANCE GROUP LTD | — | — | view → |
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-15 | Nonko Eugene | director | Sale | 4,952 | $14.03 | $69K |
| 2026-07-15 | Nonko Eugene | director | Sale | 9,524 | $14.14 | $135K |
| 2026-07-15 | Yi Steven | director, officer | Sale | 114,292 | $14.17 | $1.62M |
| 2026-07-15 | Cramer Keith | officer | Sale | 13,000 | $14.19 | $184K |
| 2026-07-14 | Nonko Eugene | director | Sale | 4,952 | $13.85 | $69K |
| 2026-07-14 | Nonko Eugene | director | Sale | 9,524 | $13.90 | $132K |
| 2026-07-14 | Yi Steven | director, officer | Sale | 37,701 | $14.06 | $530K |
| 2026-07-13 | Nonko Eugene | director | Sale | 6,622 | $13.81 | $91K |
| 2026-07-13 | Nonko Eugene | director | Sale | 10,843 | $13.76 | $149K |
| 2026-07-13 | Yi Steven | director, officer | Sale | 9,496 | $14.05 | $133K |
| 2026-07-08 | Nonko Eugene | director | Sale | 3,282 | $13.78 | $45K |
| 2026-07-08 | Nonko Eugene | director | Sale | 8,205 | $13.61 | $112K |
| 2026-07-07 | Yi Steven | director, officer | Sale | 26,467 | $14.07 | $372K |
| 2026-07-07 | Nonko Eugene | director | Sale | 4,952 | $14.08 | $70K |
| 2026-07-07 | Nonko Eugene | director | Sale | 9,524 | $14.06 | $134K |
| 2026-07-06 | Yi Steven | director, officer | Sale | 17,254 | $14.01 | $242K |
| 2026-07-06 | Nonko Eugene | director | Sale | 24,992 | $13.91 | $348K |
| 2026-07-06 | Nonko Eugene | director | Sale | 25,352 | $13.86 | $351K |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-07-15 | 2,714,948 | 2.66 | -8.0% |
| 2026-06-30 | 2,950,610 | 3.57 | -17.2% |
| 2026-06-15 | 3,563,013 | 5.94 | +7.7% |
| 2026-05-29 | 3,307,340 | 6.48 | +1.2% |
| 2026-05-15 | 3,267,829 | 5.39 | +4.9% |
| 2026-04-30 | 3,114,988 | 4.47 | -1.6% |
| 2026-04-15 | 3,165,179 | 7.06 | -2.1% |
| 2026-03-31 | 3,231,941 | 5.51 | -0.9% |
| 2026-03-13 | 3,262,847 | 3.74 | -9.9% |
| 2026-02-27 | 3,623,068 | 2.29 | +13.6% |
| 2026-02-13 | 3,190,548 | 2.75 | +78.9% |
| 2026-01-30 | 1,783,134 | 3.16 | +9.3% |
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