Who owns Annexon, Inc.?
Institutional ownership of ANNX from SEC Form 13F filings across 139 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
139
13F holders
$606.3M
value, 2026 filers
65.3%
of shares outstanding (107.0M sh)
17
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of ANNX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 19.5M | $111.5M | 0.0% | 11.9% | +83.5% |
| 2 | BlackRock, Inc. | 13.5M | $77.3M | 0.0% | 8.3% | +23.8% |
| 3 | Woodline Partners LP | 6.9M | $39.5M | 0.1% | 4.2% | +48.2% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 6.9M | $39.2M | 0.0% | 4.2% | -42.3% |
| 5 | GOLDMAN SACHS GROUP INC | 5.8M | $33.3M | 0.0% | 3.6% | +170.6% |
| 6 | GEODE CAPITAL MANAGEMENT, LLC | 4.0M | $23.1M | 0.0% | 2.5% | +19.5% |
| 7 | AMERIPRISE FINANCIAL INC | 3.5M | $20.0M | 0.0% | 2.1% | +1.8% |
| 8 | GREAT POINT PARTNERS LLC | 3.5M | $20.0M | 3.8% | 2.1% | +40.0% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 3.5M | $20.0M | 0.0% | 2.1% | -18.6% |
| 10 | MORGAN STANLEY | 3.1M | $18.0M | 0.0% | 1.9% | +14.9% |
| 11 | Balyasny Asset Management L.P. | 2.8M | $16.2M | 0.0% | 1.7% | -27.2% |
| 12 | Nuveen, LLC | 2.8M | $15.8M | 0.0% | 1.7% | -34.9% |
| 13 | Qube Research & Technologies Ltd | 2.7M | $15.7M | 0.0% | 1.7% | -11.7% |
| 14 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.2M | $12.8M | 0.0% | 1.4% | +51.5% |
| 15 | Point72 Asset Management, L.P. | 1.4M | $7.9M | 0.0% | 0.8% | -26.1% |
| 16 | NORTHERN TRUST CORP | 1.4M | $7.7M | 0.0% | 0.8% | +24.4% |
| 17 | Sixth Street Partners Management Company, L.P.NEW | 1.3M | $7.2M | 1.2% | 0.8% | new |
| 18 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3M | $7.2M | 0.0% | 0.8% | +14.1% |
| 19 | Candriam S.C.A.NEW | 1.2M | $6.8M | 0.0% | 0.7% | new |
| 20 | MILLENNIUM MANAGEMENT LLC | 1.2M | $6.8M | 0.0% | 0.7% | -4.3% |
| 21 | VANGUARD FIDUCIARY TRUST CO | 1.1M | $6.3M | 0.0% | 0.7% | +24.4% |
| 22 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.0M | $5.9M | 0.0% | 0.6% | +14.8% |
| 23 | JPMORGAN CHASE & CO | 1.0M | $5.6M | 0.0% | 0.6% | +210.1% |
| 24 | WELLS FARGO & COMPANY/MN | 978,055 | $5.6M | 0.0% | 0.6% | +40.0% |
| 25 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIPNEW | 737,935 | $4.2M | 0.0% | 0.5% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.