Activist & passive stakes
Investors crossing the 5% ownership line, from SEC Schedule 13D (activist) and 13G (passive) filings. Newest first.
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Amendments only.1–7 of 7
- PassiveAmendment 1Below 5%Nov 6, 2026Jane Street Group, Llc1.3% · 20,186 shSEC
- ActivistAmendment 8Nov 6, 2026White Mountains Insurance Group, Ltd.24.3% · 12,356,223 shSEC
- PassiveAmendment 1Below 5%Nov 5, 2026Fmr Llc3.7% · 1,377,566 shSEC
- PassiveAmendment 1Below 5%Nov 2, 2026Revelation Alpine, LLC0% · 0 shSEC
- ActivistAmendment 7Oct 31, 2026White Mountains Insurance Group, Ltd.35.1% · 17,856,614 shSEC
- PassiveAmendment 1Below 5%Oct 30, 2026Vanguard Portfolio Management4.98% · 1,877,553 shSEC
- PassiveAmendment 1Below 5%Oct 30, 2026Vanguard Capital Management4.29% · 438,457 shSEC
| Filing | Symbol | Holder | % Owned | Shares | Filed | SEC filing |
|---|---|---|---|---|---|---|
PassiveAmendment 1Below 5% | ALP | Jane Street Group, Llc in Alpha Compute Corp | 1.3% | 20,186 | Nov 6, 2026 | SEC |
ActivistAmendment 8 | MAX | White Mountains Insurance Group, Ltd. in MediaAlpha, Inc. | 24.3% | 12,356,223 | Nov 6, 2026 | SEC |
PassiveAmendment 1Below 5% | RL | Fmr Llc in Ralph Lauren Corp | 3.7% | 1,377,566 | Nov 5, 2026 | SEC |
PassiveAmendment 1Below 5% | OMDA | Revelation Alpine, LLC in Omada Health, Inc. | 0% | 0 | Nov 2, 2026 | SEC |
ActivistAmendment 7 | MAX | White Mountains Insurance Group, Ltd. in MediaAlpha, Inc. | 35.1% | 17,856,614 | Oct 31, 2026 | SEC |
PassiveAmendment 1Below 5% | RL | Vanguard Portfolio Management in Ralph Lauren Corp | 4.98% | 1,877,553 | Oct 30, 2026 | SEC |
PassiveAmendment 1Below 5% | APT | Vanguard Capital Management in Alpha Pro Tech Ltd | 4.29% | 438,457 | Oct 30, 2026 | SEC |