Annexon Inc (ANNX)
Healthcare
Biotechnology
5.10 $
-3.3%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns Annexon Inc (ANNX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 79.0% of the shares are freely tradable; institutional investors hold 102.7%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
102.7%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
0.5%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
79.0%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
17.2%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
164Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Redmile Group, LLC | 8.88 | 14,549,768 | +44.8 | 03/31/2026 |
| BlackRock Inc | 6.68 | 10,938,509 | +22.1 | 03/31/2026 |
| FMR Inc | 6.49 | 10,635,648 | +4.0 | 03/31/2026 |
| Bvf Inc | 5.31 | 8,698,173 | -4.7 | 03/31/2026 |
| Vanguard Group Inc | 4.73 | 7,753,387 | +32.9 | 12/31/2025 |
| State Street Corp | 4.22 | 6,919,255 | +48.7 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.64 | 5,956,589 | +0.0 | 03/31/2026 |
| Bain Capital Life Sciences Investors, LLC | 3.18 | 5,212,674 | -0.7 | 03/31/2026 |
| Bellevue Group AG | 3.15 | 5,157,290 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BB Biotech AG Ord | 3.15 | 5,157,290 | +0.0 | 09/30/2025 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.