Feeds › Ownership stakes (13D / 13G)
Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker ANNX
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Nov 5, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Abigail P. Johnson | 26.29M | 13.9% | SCHEDULE 13G/A ↗ |
| Nov 5, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | FMR LLC | 26.29M | 13.9% | SCHEDULE 13G/A ↗ |
| Aug 7, 2026 | SCHEDULE 13G | ANNX Annexon, Inc. | State Street Corporation | 9.82M | 6.0% | SCHEDULE 13G ↗ |
| Jul 27, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BlackRock, Inc. | 13.13M | 8.0% | SCHEDULE 13G/A ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | RedCo II Offshore SPV LLC | 9.80M | 5.5% | SCHEDULE 13G/A ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Jeremy C. Green | 17.92M | 9.9% | SCHEDULE 13G/A ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Redmile Group, LLC | 17.92M | 9.9% | SCHEDULE 13G/A ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Abigail P. Johnson | 19.52M | 11.9% | SCHEDULE 13G/A ↗ |
| Jul 8, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | FMR LLC | 19.52M | 11.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Mark N. Lampert | 8.70M | 5.4% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF Inc/Il | 8.70M | 5.4% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF Partners L P/Il | 8.70M | 5.4% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF GP Holdings LLC | 8.04M | 5.0% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF Partners OS Ltd. | 522,906 | 0.3% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Biotechnology Value Trading Fund OS LP | 522,906 | 0.3% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF II GP LLC | 3.40M | 2.1% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Biotechnology Value Fund II LP | 3.40M | 2.1% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BVF I GP LLC | 4.64M | 2.9% | SCHEDULE 13G/A ↗ |
| May 15, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Biotechnology Value Fund L P | 4.64M | 2.9% | SCHEDULE 13G/A ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 17, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Redmile Biopharma Investments II, L.P. | 7.29M | 4.7% | SCHEDULE 13G/A ↗ |
| Feb 17, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Jeremy C. Green | 15.43M | 9.9% | SCHEDULE 13G/A ↗ |
| Feb 17, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Redmile Group, LLC | 15.43M | 9.9% | SCHEDULE 13G/A ↗ |
| Feb 5, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Abigail P. Johnson | 10.22M | 7.1% | SCHEDULE 13G/A ↗ |
| Feb 5, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | FMR LLC | 10.22M | 7.1% | SCHEDULE 13G/A ↗ |
| Jan 21, 2026 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BlackRock, Inc. | 8.87M | 6.1% | SCHEDULE 13G/A ↗ |
| Nov 21, 2025 | SCHEDULE 13D/A (amended) | ANNX Annexon, Inc. | Muneer A. Satter | 10.44M | 7.2% | SCHEDULE 13D/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Abigail P. Johnson | 11.08M | 10.1% | SCHEDULE 13G/A ↗ |
| Nov 5, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | FMR LLC | 11.08M | 10.1% | SCHEDULE 13G/A ↗ |
| Oct 30, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | The Vanguard Group | 5.84M | 5.3% | SCHEDULE 13G ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | William Arsani | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Logos GP LLC | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Logos Global Master Fund LP | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Logos Global Management GP LLC | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Logos Global Management LP | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Aug 6, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Abigail P. Johnson | 15.70M | 14.3% | SCHEDULE 13G/A ↗ |
| Aug 6, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | FMR LLC | 15.70M | 14.3% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Steven A. Cohen | 95,430 | 0.1% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Point72 Capital Advisors, Inc. | 95,430 | 0.1% | SCHEDULE 13G/A ↗ |
| May 15, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Point72 Asset Management, L.P. | 95,430 | 0.1% | SCHEDULE 13G/A ↗ |
| Apr 30, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | The Vanguard Group | 5.38M | 4.9% | SCHEDULE 13G/A ↗ |
| Apr 28, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | William Arsani | 6.60M | 6.0% | SCHEDULE 13G ↗ |
| Apr 28, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | Logos GP LLC | 6.60M | 6.0% | SCHEDULE 13G ↗ |
| Apr 28, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | Logos Global Master Fund LP | 6.60M | 6.0% | SCHEDULE 13G ↗ |
| Apr 28, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | Logos Global Management GP LLC | 6.60M | 6.0% | SCHEDULE 13G ↗ |
| Apr 28, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | Logos Global Management LP | 6.60M | 6.0% | SCHEDULE 13G ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | Bain Capital Life Sciences Fund, L.P. | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BCIP Life Sciences Associates, LP | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Feb 14, 2025 | SCHEDULE 13G/A (amended) | ANNX Annexon, Inc. | BCLS I Investco, LP | 5.25M | 4.9% | SCHEDULE 13G/A ↗ |
| Jan 31, 2025 | SCHEDULE 13G | ANNX Annexon, Inc. | The Vanguard Group | 5.55M | 5.2% | SCHEDULE 13G ↗ |
50 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:31 PM EST.
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