Agios Pharmaceuticals
AGIO · NASDAQ
Who owns AGIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 55.7% of AGIO’s shares.
- Farallon Capital Management, L.L.C.10.0%
- BlackRock Institutional Trust Company, N.A.8.2%
- State Street Investment Management (US)5.9%
- Lynx1 Capital Advisors LLC5.7%
- Next 6 largest institutions25.8%
- All other shareholders44.3%
| Holder | Shares | % of shares |
|---|---|---|
| Farallon Capital Management, L.L.C. | 5.92M | 9.95% |
| BlackRock Institutional Trust Company, N.A. | 4.89M | 8.22% |
| State Street Investment Management (US) | 3.53M | 5.94% |
| Lynx1 Capital Advisors LLC | 3.41M | 5.73% |
| D. E. Shaw & Co., L.P. | 3.11M | 5.22% |
| Vanguard Portfolio Management, LLC | 2.90M | 4.87% |
| Vanguard Capital Management, LLC | 2.68M | 4.51% |
| Armistice Capital LLC | 2.40M | 4.04% |
| Erste Asset Management GmbH | 2.15M | 3.62% |
| Nomura Investment Management Business Trust | 2.11M | 3.55% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| BB Biotech Fd | 3.59M | 6.04% |
| State Street SPDR S&P Biotech ETF | 2.11M | 3.55% |
| Vanguard Total Stock Market Index Fund | 1.90M | 3.19% |
| Nomura Small Cap Core Fund | 1.70M | 2.85% |
| iShares Russell 2000 ETF | 1.53M | 2.58% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $1.06M (2 trades) of AGIO on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Gheuens Sarah | Sale | 30.00K | $914.40K |
| Backstrom Jay T. | Option exercise | 1.45K | — |
| Backstrom Jay T. | Award | 1.45K | — |
| Gheuens Sarah | Option exercise | 8.38K | — |
| Gheuens Sarah | Sale | 4.01K | $150.50K |
| Gheuens Sarah | Option exercise | 8.38K | — |
| Ballal Rahul D. | Award | 14.95K | — |
| Ballal Rahul D. | Award | 2.93K | — |
| Ballal Rahul D. | Option exercise | 2.82K | — |
| Ballal Rahul D. | Option exercise | 2.82K | — |
Congressional trades
Disclosed by members of Congress over the last 12 months
| Member | Type | Amount | Traded |
|---|---|---|---|
| Gil CisnerosHouse | Purchase | $1K–$15K | Mar 3, 2026 |
| Gil CisnerosHouse | Purchase | $1K–$15K | Dec 11, 2025 |
Short interest
Settled Sep 30, 2026
- Shares short
- 7.02M
- Days to cover
- 6.44
- % of shares outstanding
- 11.80%
- Average daily volume
- 1.09M
- Change since last report
- −7.2%
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