Annexon, Inc.
ANNX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001528115
In the last 90 days, Annexon, Inc. insiders filed 1 open-market purchase and 0 sales; 216 institutions reported holding it in 13F filings for Q2 2026, worth $1.02B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Annexon, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 216
- +3 vs. Q1 2026
- Shares held
- 178.4M
- +22.5M (+14.4%) vs. Q1 2026
- Total value
- $1.02B
- +$155.2M (+18.0%) vs. Q1 2026
- New holders
- 31
- 79 more added
- Sold out
- 28
- 80 more reduced
4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ANNX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 216 | $1.02B |
| Q1 2026 | 217 | $863.7M |
| Q4 2025 | 168 | $687.2M |
| Q3 2025 | 144 | $309.2M |
| Q2 2025 | 129 | $238.7M |
| Q1 2025 | 148 | $192.1M |
| Q4 2024 | 153 | $574.6M |
| Q3 2024 | 142 | $651.8M |
| Q2 2024 | 140 | $526.9M |
| Q1 2024 | 127 | $679.4M |
| Q4 2023 | 99 | $365.7M |
| Q3 2023 | 93 | $126.0M |
| Q2 2023 | 95 | $190.0M |
| Q1 2023 | 100 | $207.6M |
| Q4 2022 | 84 | $243.3M |
| Q3 2022 | 72 | $292.3M |
| Q2 2022 | 78 | $144.9M |
| Q1 2022 | 100 | $105.9M |
| Q4 2021 | 97 | $445.7M |
| Q3 2021 | 82 | $708.6M |
| Q2 2021 | 74 | $873.7M |
| Q1 2021 | 72 | $1.04B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Annexon, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Great Point Partners LLC | 3,500,000 | $20.0M | 4.71% | +1,000,000+40.0% | Added |
| Ameriprise Financial Inc | 3,509,623 | $20.0M | 0.00% | +60,502+1.8% | Added |
| MPM Oncology Impact Management LP | 3,544,354 | $20.2M | 1.23% | +3,544,354 | New |
| Geode Capital Management, LLC | 4,037,193 | $23.1M | 0.00% | +659,370+19.5% | Added |
| Bellevue Group AG | 4,100,016 | $23.4M | 0.49% | −1,057,274−20.5% | Reduced |
| Bain Capital Life Sciences Investors, LLC | 4,437,731 | $25.3M | 1.51% | −774,943−14.9% | Reduced |
| Siren, L.L.C. | 4,458,646 | $25.5M | 0.52% | +500,000+12.6% | Added |
| Goldman Sachs Group Inc | 5,825,579 | $33.3M | 0.00% | +3,672,699+170.6% | Added |
| Mak Capital One LLC | 5,862,180 | $33.5M | 4.69% | +1,138,137+24.1% | Added |
| Vanguard Capital Management LLC | 6,871,015 | $39.2M | 0.00% | +914,426+15.4% | Added |
| Woodline Partners LP | 6,925,067 | $39.5M | 0.12% | +4,587,930+196.3% | Added |
| BVF Inc | 8,698,173 | $49.7M | 1.27% | 00.0% | Unchanged |
| State Street Corp | 9,824,321 | $56.1M | 0.00% | +2,905,066+42.0% | Added |
| Redmile Group, LLC | 11,869,877 | $67.8M | 4.55% | −2,679,891−18.4% | Reduced |
| BlackRock, Inc. | 13,539,744 | $77.3M | 0.00% | +2,601,235+23.8% | Added |
| FMR LLC | 19,518,496 | $111.5M | 0.00% | +8,882,848+83.5% | Added |
| Longaeva Partners L.P. | 0 | $0 | 0.00% | −620,401−100.0% | Sold out |
| Silverarc Capital Management, LLC | 0 | $0 | 0.00% | −496,461−100.0% | Sold out |
| Rosalind Advisors, Inc. | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Algert Global LLC | 0 | $0 | 0.00% | −154,840−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −109,222−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −92,707−100.0% | Sold out |
| Polen Capital Management LLC | 0 | $0 | 0.00% | −70,152−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −58,185−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −55,000−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −47,120−100.0% | Sold out |
| Mirabella Financial Services LLP | 0 | $0 | 0.00% | −28,739−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −28,450−100.0% | Sold out |
| TD Asset Management Inc | 0 | $0 | 0.00% | −22,760−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −17,316−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −14,938−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −14,511−100.0% | Sold out |
| Magnetar Financial LLC | 0 | $0 | 0.00% | −14,205−100.0% | Sold out |
| American Century Companies Inc | 0 | $0 | 0.00% | −12,463−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −11,897−100.0% | Sold out |
| Abel Hall, LLC | 0 | $0 | 0.00% | −10,921−100.0% | Sold out |
| Integrated Wealth Concepts LLC | 0 | $0 | 0.00% | −10,232−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −795−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −753−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −94−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −77−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −23−100.0% | Sold out |
| JPL Wealth Management, LLC | 0 | $0 | 0.00% | −13−100.0% | Sold out |
| Janus Henderson Group PLC | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| Trask Adam Roland | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |