Ironwood Pharmaceuticals Inc
IRWD- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001446847
In the last 90 days, Ironwood Pharmaceuticals Inc insiders filed 0 open-market purchases and 1 sale; 212 institutions reported holding it in 13F filings for Q2 2026, worth $675.8M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Ironwood Pharmaceuticals Inc as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 212
- −12 vs. Q1 2026
- Shares held
- 160.6M
- −651.8K (−0.4%) vs. Q1 2026
- Total value
- $675.8M
- +$110.1M (+19.5%) vs. Q1 2026
- New holders
- 24
- 73 more added
- Sold out
- 36
- 84 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IRWD on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 212 | $675.8M |
| Q1 2026 | 227 | $566.8M |
| Q4 2025 | 199 | $520.2M |
| Q3 2025 | 166 | $194.9M |
| Q2 2025 | 155 | $104.9M |
| Q1 2025 | 200 | $228.5M |
| Q4 2024 | 223 | $727.5M |
| Q3 2024 | 221 | $673.7M |
| Q2 2024 | 227 | $1.12B |
| Q1 2024 | 261 | $1.50B |
| Q4 2023 | 251 | $1.89B |
| Q3 2023 | 249 | $1.56B |
| Q2 2023 | 252 | $1.77B |
| Q1 2023 | 255 | $1.74B |
| Q4 2022 | 250 | $2.08B |
| Q3 2022 | 245 | $1.76B |
| Q2 2022 | 240 | $2.02B |
| Q1 2022 | 221 | $2.09B |
| Q4 2021 | 212 | $2.00B |
| Q3 2021 | 229 | $2.32B |
| Q2 2021 | 209 | $2.25B |
| Q1 2021 | 210 | $1.91B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Two Sigma Investments, LP | 4,556,089 | $19.2M | 0.01% | −1,292,187−22.1% | Reduced |
| Geode Capital Management, LLC | 4,831,657 | $20.3M | 0.00% | +288,135+6.3% | Added |
| Vanguard Portfolio Management LLC | 5,513,355 | $23.2M | 0.00% | −1,168,682−17.5% | Reduced |
| Acadian Asset Management LLC | 5,853,331 | $24.6M | 0.03% | −723,941−11.0% | Reduced |
| AQR Capital Management LLC | 6,465,921 | $27.2M | 0.01% | −1,069,159−14.2% | Reduced |
| Vanguard Capital Management LLC | 6,608,508 | $27.8M | 0.00% | +511,054+8.4% | Added |
| Renaissance Technologies LLC | 7,993,226 | $33.7M | 0.05% | −67,847−0.8% | Reduced |
| Bank of America Corp | 8,683,803 | $36.6M | 0.00% | +8960.0% | Added |
| State Street Corp | 8,809,601 | $37.1M | 0.00% | +1,352,657+18.1% | Added |
| Sarissa Capital Management LP | 9,188,635 | $38.7M | 21.75% | 00.0% | Unchanged |
| Armistice Capital, LLC | 13,932,000 | $58.7M | 1.62% | −1,096,000−7.3% | Reduced |
| BlackRock, Inc. | 17,788,557 | $74.9M | 0.00% | +4,425,627+33.1% | Added |
| Millennium Management LLC | 0 | $0 | 0.00% | −457,114−100.0% | Sold out |
| Toroso Investments, LLC | 0 | $0 | 0.00% | −304,475−100.0% | Sold out |
| Harvest Investment Services, LLC | 0 | $0 | 0.00% | −241,881−100.0% | Sold out |
| Hennion & Walsh Asset Management, Inc. | 0 | $0 | 0.00% | −184,485−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −156,059−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −97,400−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −86,874−100.0% | Sold out |
| CIBC World Markets Inc. | 0 | $0 | 0.00% | −71,330−100.0% | Sold out |
| Bank of Montreal | 0 | $0 | 0.00% | −62,750−100.0% | Sold out |
| Wedbush Securities Inc | 0 | $0 | 0.00% | −60,703−100.0% | Sold out |
| Virtus ETF Advisers LLC | 0 | $0 | 0.00% | −58,000−100.0% | Sold out |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0 | $0 | 0.00% | −56,132−100.0% | Sold out |
| Scotia Capital Inc. | 0 | $0 | 0.00% | −55,272−100.0% | Sold out |
| nVerses Capital, LLC | 0 | $0 | 0.00% | −32,554−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −30,821−100.0% | Sold out |
| Oversea-Chinese Banking CORP Ltd | 0 | $0 | 0.00% | −21,465−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −17,724−100.0% | Sold out |
| Abacus Wealth Partners, LLC | 0 | $0 | 0.00% | −17,531−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −16,960−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −15,917−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −14,218−100.0% | Sold out |
| Nine Masts Capital Ltd | 0 | $0 | 0.00% | −13,527−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −13,470−100.0% | Sold out |
| Farallon Capital Management, L.L.C. | 0 | $0 | 0.00% | −13,000−100.0% | Sold out |
| Evoke Wealth, LLC | 0 | $0 | 0.00% | −12,062−100.0% | Sold out |
| waypoint wealth counsel | 0 | $0 | 0.00% | −11,999−100.0% | Sold out |
| Waddell & Associates, LLC | 0 | $0 | 0.00% | −11,682−100.0% | Sold out |
| MQS Management LLC | 0 | $0 | 0.00% | −11,451−100.0% | Sold out |
| Simplify Asset Management Inc. | 0 | $0 | 0.00% | −11,447−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −10,657−100.0% | Sold out |
| Financial Management Professionals, Inc. | 0 | $0 | 0.00% | −6,508−100.0% | Sold out |
| Carolina Wealth Advisors, LLC | 0 | $0 | 0.00% | −1,492−100.0% | Sold out |
| Intentional Wealth Strategies, LLC | 0 | $0 | 0.00% | −349−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −235−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −133−100.0% | Sold out |
| Frazier Financial Advisors, LLC | 0 | $0 | 0.00% | −97−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |
| DGS Capital Management, LLC | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |