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, Q3 2025
Institutional positions in Ironwood Pharmaceuticals Inc as of Sep 30, 2025. 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
- 166
- +12 vs. Q2 2025
- Shares held
- 148.7M
- +2.47M (+1.7%) vs. Q2 2025
- Total value
- $194.9M
- +$90.0M (+85.8%) vs. Q2 2025
- New holders
- 30
- 52 more added
- Sold out
- 18
- 48 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Armistice Capital, LLC | 16,150,000 | $21.2M | 0.66% | 00.0% | Unchanged |
| Vanguard Group Inc | 16,072,006 | $21.1M | 0.00% | −130,123−0.8% | Reduced |
| Sarissa Capital Management LP | 15,919,435 | $20.9M | 11.56% | 00.0% | Unchanged |
| BlackRock, Inc. | 12,062,558 | $15.8M | 0.00% | +39,560+0.3% | Added |
| Bank of America Corp | 11,695,544 | $15.3M | 0.00% | +8,337,672+248.3% | Added |
| Renaissance Technologies LLC | 8,352,173 | $10.9M | 0.01% | −53,996−0.6% | Reduced |
| Acadian Asset Management LLC | 6,502,493 | $8.51M | 0.01% | −47,194−0.7% | Reduced |
| Kynam Capital Management, LP | 5,466,825 | $7.16M | 0.53% | 00.0% | Unchanged |
| AQR Capital Management LLC | 5,378,535 | $7.05M | 0.00% | −787,102−12.8% | Reduced |
| Charles Schwab Investment Management Inc | 4,917,336 | $6.44M | 0.00% | +1,253,060+34.2% | Added |
| Geode Capital Management, LLC | 3,614,987 | $4.74M | 0.00% | +115,655+3.3% | Added |
| Two Sigma Advisers, LP | 3,316,500 | $4.34M | 0.01% | −67,600−2.0% | Reduced |
| State Street Corp | 3,156,307 | $4.13M | 0.00% | +48,588+1.6% | Added |
| Marshall Wace, LLP | 3,144,139 | $4.12M | 0.00% | −849,418−21.3% | Reduced |
| Qube Research & Technologies Ltd | 2,806,910 | $3.68M | 0.01% | −544,092−16.2% | Reduced |
| Two Sigma Investments, LP | 2,534,511 | $3.32M | 0.01% | −216,062−7.9% | Reduced |
| Jane Street Group, LLC | 2,321,095 | $3.04M | 0.00% | +575,973+33.0% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 2,161,818 | $2.83M | 0.01% | −45,130−2.0% | Reduced |
| Federated Hermes, Inc. | 2,157,104 | $2.83M | 0.00% | −19,934−0.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 1,920,530 | $2.52M | 0.01% | +445,484+30.2% | Added |
| Deutsche Bank AG | 1,527,229 | $2.00M | 0.00% | +3,892+0.3% | Added |
| Northern Trust Corp | 1,340,906 | $1.76M | 0.00% | +35,641+2.7% | Added |
| Los Angeles Capital Management LLC | 1,130,052 | $1.48M | 0.01% | −81,103−6.7% | Reduced |
| Goldman Sachs Group Inc | 1,084,367 | $1.42M | 0.00% | −360,363−24.9% | Reduced |
| UBS Group AG | 811,664 | $1.06M | 0.00% | +511,554+170.5% | Added |
| SEI Investments Co | 683,604 | $895.5K | 0.00% | 00.0% | Unchanged |
| Ieq Capital, LLC | 661,698 | $866.8K | 0.00% | +169,816+34.5% | Added |
| Citadel Advisors LLC | 644,046 | $843.7K | 0.00% | +334,774+108.2% | Added |
| FMR LLC | 559,946 | $733.5K | 0.00% | +62,744+12.6% | Added |
| Highbridge Capital Management LLC | 537,252 | $703.8K | 0.04% | +537,252 | New |
| Bank of New York Mellon Corp | 503,078 | $659.0K | 0.00% | +15,896+3.3% | Added |
| Morgan Stanley | 477,100 | $625.0K | 0.00% | −16,934−3.4% | Reduced |
| D. E. Shaw & Co., Inc. | 372,270 | $487.7K | 0.00% | −1,297,369−77.7% | Reduced |
| Invesco Ltd. | 366,532 | $480.2K | 0.00% | +44,385+13.8% | Added |
| State of Wyoming | 362,407 | $474.8K | 0.05% | +156,763+76.2% | Added |
| Robeco Institutional Asset Management B.V. | 342,998 | $449.3K | 0.00% | −27,336−7.4% | Reduced |
| Cerity Partners LLC | 339,048 | $444.2K | 0.00% | −641−0.2% | Reduced |
| Russell Investments Group, Ltd. | 326,567 | $429.3K | 0.00% | +117,706+56.4% | Added |
| Gsa Capital Partners LLP | 309,529 | $405.0K | 0.03% | −411,331−57.1% | Reduced |
| Royce & Associates LP | 300,619 | $393.8K | 0.00% | −205,441−40.6% | Reduced |
| Barclays PLC | 297,318 | $389.5K | 0.00% | −68,132−18.6% | Reduced |
| Toroso Investments, LLC | 294,236 | $385.4K | 0.00% | −15,843−5.1% | Reduced |
| Millennium Management LLC | 250,119 | $327.7K | 0.00% | +153,787+159.6% | Added |
| CWM, LLC | 232,790 | $305.0K | 0.00% | +50,016+27.4% | Added |
| Rhumbline Advisers | 223,229 | $292.4K | 0.00% | +7,611+3.5% | Added |
| Omers Administration Corp | 215,110 | $281.8K | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 199,520 | $261.4K | 0.00% | 00.0% | Unchanged |
| Exchange Traded Concepts, LLC | 195,732 | $256.4K | 0.00% | −145,802−42.7% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 154,388 | $234.7K | 0.00% | +28,928+23.1% | Added |
| KLP Kapitalforvaltning AS | 174,200 | $228.2K | 0.00% | 00.0% | Unchanged |
| Hennion & Walsh Asset Management, Inc. | 169,493 | $222.0K | 0.01% | −3,086−1.8% | Reduced |
| Panagora Asset Management Inc | 158,962 | $208.2K | 0.00% | +112,393+241.3% | Added |
| Bridgeway Capital Management, LLC | 150,000 | $196.5K | 0.00% | +75,000+100.0% | Added |
| SRS Capital Advisors, Inc. | 143,392 | $187.8K | 0.00% | +143,392 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 124,875 | $163.6K | 0.00% | −401,900−76.3% | Reduced |
| Algert Global LLC | 122,580 | $160.6K | 0.00% | 00.0% | Unchanged |
| Ameriprise Financial Inc | 119,969 | $157.2K | 0.00% | +71,842+149.3% | Added |
| JPMorgan Chase & Co | 112,157 | $146.9K | 0.00% | −1,127−1.0% | Reduced |
| Siren, L.L.C. | 110,532 | $144.8K | 0.01% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 102,014 | $133.6K | 0.00% | +28,660+39.1% | Added |
| Cercano Management LLC | 101,378 | $132.8K | 0.01% | 00.0% | Unchanged |
| Mariner, LLC | 101,313 | $132.7K | 0.00% | −60,261−37.3% | Reduced |
| Wells Fargo & Company | 101,252 | $132.6K | 0.00% | +13,756+15.7% | Added |
| Susquehanna International Group, LLP | 96,866 | $126.9K | 0.00% | −169,093−63.6% | Reduced |
| Dimensional Fund Advisors LP | 90,373 | $118.4K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 90,156 | $118.1K | 0.00% | −3,524−3.8% | Reduced |
| Pallas Capital Advisors LLC | 87,569 | $114.7K | 0.00% | +8,057+10.1% | Added |
| Buckingham Strategic Partners | 52,295 | $113.4K | 0.00% | +12,552+31.6% | Added |
| Price T Rowe Associates Inc | 80,178 | $106.0K | 0.00% | −92,343−53.5% | Reduced |
| Tudor Investment Corp Et Al | 79,455 | $104.1K | 0.00% | 00.0% | Unchanged |
| STRS Ohio | 76,600 | $100.3K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 72,971 | $95.6K | 0.00% | −14,464−16.5% | Reduced |
| JustInvest LLC | 72,706 | $95.2K | 0.00% | +22,029+43.5% | Added |
| Intech Investment Management LLC | 72,194 | $94.6K | 0.00% | −15,593−17.8% | Reduced |
| Mercer Global Advisors Inc | 71,353 | $93.5K | 0.00% | +37,938+113.5% | Added |
| Captrust Financial Advisors | 63,154 | $82.7K | 0.00% | +18,707+42.1% | Added |
| Public Employees Retirement System of Ohio | 60,768 | $79.6K | 0.00% | +47,299+351.2% | Added |
| MetLife Investment Management | 58,009 | $76.0K | 0.00% | +58,009 | New |
| Cubist Systematic Strategies, LLC | 53,995 | $70.7K | 0.00% | +53,995 | New |
| Manufacturers Life Insurance Company, The | 53,942 | $70.7K | 0.00% | +53,942 | New |
| Prudential Financial Inc | 49,935 | $65.4K | 0.00% | +29,300+142.0% | Added |
| Merit Financial Group, LLC | 48,879 | $64.0K | 0.00% | +7,232+17.4% | Added |
| Krilogy Financial LLC | 30,208 | $62.2K | 0.00% | +30,208 | New |
| Colony Group, LLC | 44,652 | $58.5K | 0.00% | +10,105+29.3% | Added |
| Police & Firemen's Retirement System of New Jersey | 44,115 | $57.8K | 0.00% | +14,802+50.5% | Added |
| New York State Common Retirement Fund | 41,869 | $54.8K | 0.00% | 00.0% | Unchanged |
| Grimes & Company, Inc. | 40,994 | $53.7K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 39,844 | $52.0K | 0.00% | +39,844 | New |
| SG Americas Securities, LLC | 36,952 | $48.0K | 0.00% | +36,952 | New |
| Capstone Investment Advisors, LLC | 36,268 | $47.5K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 34,331 | $45.0K | 0.00% | +15,594+83.2% | Added |
| ProShare Advisors LLC | 33,145 | $43.4K | 0.00% | −5,707−14.7% | Reduced |
| Brighton Jones LLC | 33,071 | $43.3K | 0.00% | +2,646+8.7% | Added |
| Requisite Capital Management, LLC | 31,748 | $41.6K | 0.01% | +31,748 | New |
| Ariadne Wealth Management, LP | 12,241 | $41.3K | 0.02% | −648−5.0% | Reduced |
| Vise Technologies, Inc. | 29,632 | $38.8K | 0.00% | +29,632 | New |
| Voya Investment Management LLC | 29,367 | $38.5K | 0.00% | −16,708−36.3% | Reduced |
| China Universal Asset Management Co., Ltd. | 28,472 | $37.3K | 0.00% | −4,029−12.4% | Reduced |
| Franklin Resources Inc | 23,251 | $30.5K | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 21,928 | $28.7K | 0.01% | +7,469+51.7% | Added |