ANNX Annexon, Inc.
Annexon, Inc. (ANNX) Institutional Ownership
What the institutions did with ANNX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| FMR LLC | 19.5M | 10.9% |
| BlackRock, Inc. | 13.5M | 7.6% |
| Redmile Group, LLC | 11.9M | 6.6% |
| STATE STREET CORP | 9.8M | 5.5% |
| BVF INC/IL | 8.7M | 4.9% |
| Woodline Partners LP | 6.9M | 3.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 6.9M | 3.8% |
| MAK CAPITAL ONE LLC | 5.9M | 3.3% |
| GOLDMAN SACHS GROUP INC | 5.8M | 3.3% |
| Siren, L.L.C. | 4.5M | 2.5% |
| Bain Capital Life Sciences Investors, LLC | 4.4M | 2.5% |
| Bellevue Group AG | 4.1M | 2.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 4.0M | 2.3% |
| MPM BIOIMPACT LLC | 3.5M | 2.0% |
| AMERIPRISE FINANCIAL INC | 3.5M | 2.0% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 3.5M | 2.0% |
| GREAT POINT PARTNERS LLC | 3.5M | 2.0% |
| MORGAN STANLEY | 3.1M | 1.8% |
| Palo Alto Investors LP | 2.9M | 1.6% |
| Balyasny Asset Management L.P. | 2.8M | 1.6% |
| Nuveen, LLC | 2.8M | 1.5% |
| Qube Research & Technologies Ltd | 2.7M | 1.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.2M | 1.3% |
| Opaleye Management Inc. | 1.7M | 1.0% |
| Logos Global Management LP | 1.5M | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Increased | 10.6M | 19.5M | +8.9M |
| Woodline Partners LP | Increased | 2.3M | 6.9M | +4.6M |
| GOLDMAN SACHS GROUP INC | Increased | 2.2M | 5.8M | +3.7M |
| BANK OF AMERICA CORP /DE/ | Reduced | 4.3M | 614.2K | -3.6M |
| MPM BIOIMPACT LLC | New | 0 | 3.5M | +3.5M |
| STATE STREET CORP | Increased | 6.9M | 9.8M | +2.9M |
| Redmile Group, LLC | Reduced | 14.5M | 11.9M | -2.7M |
| BlackRock, Inc. | Increased | 10.9M | 13.5M | +2.6M |
| Logos Global Management LP | New | 0 | 1.5M | +1.5M |
| Nuveen, LLC | Reduced | 4.2M | 2.8M | -1.5M |
| Candriam S.C.A. | New | 0 | 1.2M | +1.2M |
| MAK CAPITAL ONE LLC | Increased | 4.7M | 5.9M | +1.1M |
| Bellevue Group AG | Reduced | 5.2M | 4.1M | -1.1M |
| Balyasny Asset Management L.P. | Reduced | 3.9M | 2.8M | -1.1M |
| GREAT POINT PARTNERS LLC | Increased | 2.5M | 3.5M | +1.0M |
| PANAGORA ASSET MANAGEMENT INC | New | 0 | 967.9K | +967.9K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.0M | 6.9M | +914.4K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 4.3M | 3.5M | -800.0K |
| Bain Capital Life Sciences Investors, LLC | Reduced | 5.2M | 4.4M | -774.9K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.5M | 2.2M | +763.7K |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Increased | 7.2K | 766.6K | +759.4K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 737.9K | +737.9K |
| JPMORGAN CHASE & CO | Increased | 323.9K | 1.0M | +680.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 3.4M | 4.0M | +659.4K |
| MARSHALL WACE, LLP | Reduced | 861.5K | 210.6K | -650.9K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.