AGIO Institutional Ownership
Who owns Agios Pharmaceuticals, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 238 funds reported holding AGIO at Jun 30, 2026, together owning 110.7% of the company.
- ▲132 buying vs 96 selling
- ▲Held by funds +5.1 pts
- ▲Funds holding +4
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 238 | 234 | +1.7% |
| In funds' top 10 | 6 | 5 | +20.0% |
| 13F shares | 66.1M | 63.1M | +4.8% |
| Held by funds | 110.7% | 105.7% | +5.1 pts |
| New positions | 36 | 29 | +24.1% |
| Increased | 96 | 82 | +17.1% |
| Reduced | 64 | 82 | −22.0% |
| Sold out | 32 | 37 | −13.5% |
| Calls (shares) | 3M | 3.3M | −9.5% |
| Puts (shares) | 0 | 15K | −100.0% |
| Put/call ratio | 0.00 | 0.00 | −100.0% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in AGIO
All superinvestors →
Who owns AGIO
share of fund held shares- Index and passive funds31.4%
- Active managers and hedge funds52.5%
- Banks and brokers15.7%
- Pensions, insurers and other0.5%
The top 10 holders own 52.4% of all AGIO shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
43 funds changed their position- Assenagon Asset Management S.A.Added+1.7M sh
- Y-Intercept (Hong Kong) LtdNew+86K sh
- Mackenzie Financial CorpNew+44K sh
- CenterBook Partners LPSold out−22K sh
- Alps Advisors IncAdded+19K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 10.81% | 6.5M | $240M | +701K |
| 2 | Farallon Capital Management, L.l.c. | 9.91% | 5.9M | $220M | +233K |
| 3 | State Street Corp | 5.92% | 3.5M | $131M | +169K |
| 4 | Lynx1 Capital Management LP | 5.71% | 3.4M | $127M | +797K |
| 5 | D. E. Shaw & Co., Inc. | 5.20% | 3.1M | $115M | +426K |
| 6 | Vanguard Portfolio Management LLC | 4.85% | 2.9M | $108M | +287K |
| 7 | Vanguard Capital Management LLC | 4.49% | 2.7M | $99.5M | +50K |
| 8 | Armistice Capital, LLC | 4.02% | 2.4M | $89.1M | −316K |
| 9 | Erste Asset Management GmbH | 3.61% | 2.2M | $82M | −550K |
| 10 | Nomura Asset Management International Inc. | 3.54% | 2.1M | $78.3M | +616K |
- ADAR1 Capital Management, LLC+1.1M sh+$42.6M
- UBS Group AG+853K sh+$31.7M
- Lynx1 Capital Management LP+797K sh+$29.6M
- BlackRock, Inc.+701K sh+$26M
- AQR Capital Management LLC+648K sh+$24M
- Nomura Asset Management International Inc.+616K sh+$22.9M
- Arrowstreet Capital, Limited Partnership+560K sh+$20.8M
- Defilade Capital Management, L.P.+547K sh+$20.3M
- T. Rowe Price Investment Management, Inc.−1.5M sh−$50.4M
- Mpm Bioimpact LLC−1.3M sh−$44.2M
- Frazier Life Sciences Management, L.P.−1.3M sh−$42.5M
- Wellington Management Group LLP−621K sh−$23M
- Erste Asset Management GmbH−550K sh−$20.9M
- Artisan Partners Limited Partnership−482K sh−$16.3M
- Vestal Point Capital, LP−450K sh−$15.2M
- Armistice Capital, LLC−316K sh−$11.7M
AGIO institutional ownership FAQ
Who owns the most AGIO stock?
In Q2 2026 13F filings the largest holder of AGIO was BlackRock, Inc., followed by Farallon Capital Management, L.l.c. and State Street Corp. Index fund managers are usually the biggest holders of large companies.
What percentage of AGIO is owned by institutions?
Funds that file 13F reports held 110.7% of AGIO's shares at Jun 30, 2026, compared with 105.7% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying AGIO?
In Q2 2026, 132 funds bought AGIO (36 of them new positions) and 96 sold (32 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for AGIO is strongly bullish.
What is AGIO's institutional put/call ratio?
Funds reported $0 of AGIO puts against $112M of calls, a put/call ratio of 0.00 (0.00 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this AGIO ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.