238 institutions reported holding $1.04B of ANNEXON INC (ANNX) in SEC 13F filings for 2026-06-30. Largest institutional holders: FMR LLC ($111.5M), BlackRock, Inc. ($77.3M), Redmile Group, LLC ($67.8M), VANGUARD GROUP INC ($59.6M), STATE STREET CORP ($56.1M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $111.5M | 19.5M | Added |
| 2 | BlackRock, Inc. | $77.3M | 13.5M | Added |
| 3 | Redmile Group, LLC | $67.8M | 11.9M | Trimmed |
| 4 | VANGUARD GROUP INC | $59.6M | 10.4M | Added |
| 5 | STATE STREET CORP | $56.1M | 9.8M | Added |
| 6 | BVF INC/IL | $49.7M | 8.7M | Hold |
| 7 | Woodline Partners LP | $39.5M | 6.9M | Added |
| 8 | MAK CAPITAL ONE LLC | $33.5M | 5.9M | Added |
| 9 | GOLDMAN SACHS GROUP INC | $33.3M | 5.8M | Added |
| 10 | Siren, L.L.C. | $25.5M | 4.5M | Added |
| 11 | Bain Capital Life Sciences Investors, LLC | $25.3M | 4.4M | Trimmed |
| 12 | Bellevue Group AG | $23.4M | 4.1M | Trimmed |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | $23.1M | 4.0M | Added |
| 14 | MPM BIOIMPACT LLC | $20.2M | 3.5M | New |
| 15 | AMERIPRISE FINANCIAL INC | $20.0M | 3.5M | Added |
| 16 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $20.0M | 3.5M | Trimmed |
| 17 | GREAT POINT PARTNERS LLC | $20.0M | 3.5M | Added |
| 18 | MORGAN STANLEY | $18.0M | 3.1M | Added |
| 19 | Palo Alto Investors LP | $16.8M | 2.9M | Hold |
| 20 | Balyasny Asset Management L.P. | $16.2M | 2.8M | Trimmed |
| 21 | Nuveen, LLC | $15.8M | 2.8M | Trimmed |
| 22 | Qube Research & Technologies Ltd | $15.7M | 2.7M | Trimmed |
| 23 | Opaleye Management Inc. | $9.8M | 1.7M | Trimmed |
| 24 | Logos Global Management LP | $8.6M | 1.5M | New |
| 25 | DIMENSIONAL FUND ADVISORS LP | $8.6M | 1.5M | Added |
Source: SEC Form 13F filings · as of 2026-06-30