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, Q1 2025
Institutional positions in Ironwood Pharmaceuticals Inc as of Mar 31, 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
- 200
- −21 vs. Q4 2024
- Shares held
- 155.5M
- −8.33M (−5.1%) vs. Q4 2024
- Total value
- $228.5M
- −$497.1M (−68.5%) vs. Q4 2024
- New holders
- 30
- 73 more added
- Sold out
- 51
- 63 more reduced
2 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sarissa Capital Management LP | 16,390,000 | $24.1M | 15.57% | 00.0% | Unchanged |
| Vanguard Group Inc | 15,696,161 | $23.1M | 0.00% | −3,842,394−19.7% | Reduced |
| Armistice Capital, LLC | 13,700,000 | $20.1M | 0.54% | +4,232,000+44.7% | Added |
| BlackRock, Inc. | 11,878,924 | $17.5M | 0.00% | −11,158,411−48.4% | Reduced |
| Renaissance Technologies LLC | 9,940,492 | $14.6M | 0.02% | +874,251+9.6% | Added |
| Braidwell LP | 6,622,584 | $9.74M | 0.34% | +1,182,307+21.7% | Added |
| Millennium Management LLC | 6,359,682 | $9.35M | 0.01% | +4,179,239+191.7% | Added |
| Kynam Capital Management, LP | 5,822,938 | $8.56M | 0.73% | +1,137,375+24.3% | Added |
| LSV Asset Management | 3,997,801 | $5.88M | 0.01% | −83,700−2.1% | Reduced |
| Jane Street Group, LLC | 3,510,117 | $5.16M | 0.01% | +3,092,475+740.5% | Added |
| State Street Corp | 3,498,289 | $5.14M | 0.00% | −4,830,528−58.0% | Reduced |
| Geode Capital Management, LLC | 3,418,089 | $5.03M | 0.00% | +111,519+3.4% | Added |
| Qube Research & Technologies Ltd | 3,307,059 | $4.86M | 0.01% | +3,049,329+1,183.1% | Added |
| Charles Schwab Investment Management Inc | 2,647,015 | $3.89M | 0.00% | +663,775+33.5% | Added |
| Acadian Asset Management LLC | 2,645,189 | $3.88M | 0.01% | +1,630,726+160.7% | Added |
| AQR Capital Management LLC | 2,523,875 | $3.71M | 0.00% | +2,126,889+535.8% | Added |
| Two Sigma Advisers, LP | 1,884,600 | $2.77M | 0.01% | +650,600+52.7% | Added |
| Morgan Stanley | 1,863,221 | $2.74M | 0.00% | −2,161,472−53.7% | Reduced |
| Pacer Advisors, Inc. | 1,789,098 | $2.63M | 0.01% | −9,941,673−84.7% | Reduced |
| JPMorgan Chase & Co | 1,702,633 | $2.50M | 0.00% | +628,127+58.5% | Added |
| Jacobs Levy Equity Management, Inc | 1,580,320 | $2.32M | 0.01% | −2,042,706−56.4% | Reduced |
| Goldman Sachs Group Inc | 1,575,416 | $2.32M | 0.00% | +660,144+72.1% | Added |
| Deutsche Bank AG | 1,554,154 | $2.28M | 0.00% | −13,381−0.9% | Reduced |
| Point72 Asset Management, L.P. | 1,532,565 | $2.25M | 0.01% | +381,557+33.1% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 1,488,044 | $2.19M | 0.01% | +1,146,589+335.8% | Added |
| Bank of America Corp | 1,428,516 | $2.10M | 0.00% | +750,371+110.7% | Added |
| Northern Trust Corp | 1,406,534 | $2.07M | 0.00% | −218,576−13.4% | Reduced |
| Federated Hermes, Inc. | 1,305,362 | $1.92M | 0.00% | +934,886+252.3% | Added |
| Two Sigma Investments, LP | 1,227,196 | $1.80M | 0.00% | +363,768+42.1% | Added |
| Jupiter Asset Management Ltd | 1,223,275 | $1.80M | 0.02% | 00.0% | Unchanged |
| Sio Capital Management, LLC | 1,017,616 | $1.50M | 0.45% | +109,833+12.1% | Added |
| Citadel Advisors LLC | 940,548 | $1.38M | 0.00% | +380,084+67.8% | Added |
| Voleon Capital Management LP | 870,629 | $1.28M | 0.10% | +787,901+952.4% | Added |
| Mariner, LLC | 750,000 | $1.10M | 0.00% | +644,036+607.8% | Added |
| Royce & Associates LP | 735,436 | $1.08M | 0.01% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 687,787 | $1.01M | 0.00% | +356,087+107.4% | Added |
| Susquehanna International Group, LLP | 648,267 | $953.0K | 0.00% | +455,976+237.1% | Added |
| Marshall Wace, LLP | 557,521 | $819.6K | 0.00% | +557,521 | New |
| XTX Topco Ltd | 552,613 | $812.3K | 0.04% | +506,732+1,104.4% | Added |
| Gsa Capital Partners LLP | 524,676 | $771.0K | 0.07% | +510,809+3,683.6% | Added |
| Bank of New York Mellon Corp | 499,613 | $734.4K | 0.00% | −478,522−48.9% | Reduced |
| ExodusPoint Capital Management, LP | 494,620 | $727.0K | 0.01% | +494,620 | New |
| FMR LLC | 479,741 | $705.2K | 0.00% | +176,468+58.2% | Added |
| Nuveen, LLC | 471,361 | $692.9K | 0.00% | +471,361 | New |
| Walleye Capital LLC | 431,410 | $634.2K | 0.01% | −148,687−25.6% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 417,953 | $614.4K | 0.00% | −8,185−1.9% | Reduced |
| Robeco Institutional Asset Management B.V. | 380,960 | $560.0K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 374,399 | $550.4K | 0.00% | +251,759+205.3% | Added |
| Catalyst Funds Management Pty Ltd | 348,840 | $512.8K | 0.13% | +338,340+3,222.3% | Added |
| Man Group plc | 333,718 | $490.6K | 0.00% | −21,106−5.9% | Reduced |
| AXA S.A. | 332,810 | $489.2K | 0.00% | +44,339+15.4% | Added |
| Barclays PLC | 329,389 | $484.2K | 0.00% | −39,887−10.8% | Reduced |
| Balyasny Asset Management LLC | 310,260 | $456.1K | 0.00% | +310,260 | New |
| Schonfeld Strategic Advisors LLC | 307,337 | $451.8K | 0.00% | +52,297+20.5% | Added |
| Franklin Resources Inc | 306,011 | $449.8K | 0.00% | −3,225−1.0% | Reduced |
| Allianz Asset Management GmbH | 293,100 | $430.9K | 0.00% | +235,800+411.5% | Added |
| State Board of Administration of Florida Retirement System | 292,445 | $429.9K | 0.00% | +248,051+558.7% | Added |
| UBS Asset Management Americas Inc | 286,990 | $421.9K | 0.00% | 00.0% | Unchanged |
| Swiss National Bank | 282,700 | $415.6K | 0.00% | 00.0% | Unchanged |
| Invesco Ltd. | 275,253 | $404.6K | 0.00% | −246,735−47.3% | Reduced |
| Legal & General Group Plc | 250,272 | $367.9K | 0.00% | −170,414−40.5% | Reduced |
| CWM Advisors, LLC | 231,825 | $340.8K | 0.04% | +142,574+159.7% | Added |
| Russell Investments Group, Ltd. | 218,028 | $319.7K | 0.00% | −202,423−48.1% | Reduced |
| EntryPoint Capital, LLC | 215,843 | $317.3K | 0.15% | +152,930+243.1% | Added |
| Omers Administration Corp | 215,110 | $316.2K | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 210,731 | $309.8K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 208,043 | $305.8K | 0.00% | −139,963−40.2% | Reduced |
| Parkman Healthcare Partners LLC | 205,086 | $301.5K | 0.04% | −203,449−49.8% | Reduced |
| Graham Capital Management, L.P. | 203,538 | $299.2K | 0.01% | +140,506+222.9% | Added |
| KLP Kapitalforvaltning AS | 198,400 | $291.6K | 0.00% | +174,200+719.8% | Added |
| SEI Investments Co | 186,747 | $274.5K | 0.00% | +44,832+31.6% | Added |
| Ieq Capital, LLC | 185,728 | $273.0K | 0.00% | +185,728 | New |
| Hennion & Walsh Asset Management, Inc. | 180,552 | $265.4K | 0.01% | −7,221−3.8% | Reduced |
| Exchange Traded Concepts, LLC | 178,523 | $262.4K | 0.00% | +113,245+173.5% | Added |
| Price T Rowe Associates Inc | 171,278 | $252.0K | 0.00% | +75,380+78.6% | Added |
| Macquarie Group Ltd | 169,450 | $249.3K | 0.00% | +2,250+1.3% | Added |
| Alliancebernstein L.P. | 152,560 | $224.3K | 0.00% | −10,510−6.4% | Reduced |
| California State Teachers Retirement System | 134,137 | $197.2K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 124,271 | $182.7K | 0.00% | −2,054,990−94.3% | Reduced |
| Alps Advisors Inc | 116,860 | $171.8K | 0.00% | −12,537−9.7% | Reduced |
| Siren, L.L.C. | 110,532 | $162.5K | 0.01% | 00.0% | Unchanged |
| Citigroup Inc | 110,166 | $161.9K | 0.00% | −185,795−62.8% | Reduced |
| D. E. Shaw & Co., Inc. | 109,724 | $161.3K | 0.00% | +41,971+61.9% | Added |
| Old West Investment Management, LLC | 108,211 | $159.1K | 0.06% | +46,092+74.2% | Added |
| Cercano Management LLC | 101,378 | $149.0K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 100,851 | $148.3K | 0.04% | +100,851 | New |
| Cerity Partners LLC | 96,478 | $141.8K | 0.00% | +96,478 | New |
| Principal Financial Group Inc | 92,382 | $135.8K | 0.00% | −672,974−87.9% | Reduced |
| Dimensional Fund Advisors LP | 90,401 | $132.9K | 0.00% | −128,021−58.6% | Reduced |
| Intech Investment Management LLC | 87,787 | $129.0K | 0.00% | +30,543+53.4% | Added |
| Creative Planning | 84,632 | $124.4K | 0.00% | −18,918−18.3% | Reduced |
| Wells Fargo & Company | 84,251 | $123.8K | 0.00% | +1,686+2.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 84,096 | $123.6K | 0.00% | −5,780−6.4% | Reduced |
| Jain Global LLC | 83,005 | $122.0K | 0.00% | +57,010+219.3% | Added |
| Tudor Investment Corp Et Al | 81,795 | $120.2K | 0.00% | +55,729+213.8% | Added |
| STRS Ohio | 76,600 | $112.6K | 0.00% | 00.0% | Unchanged |
| Corebridge Financial, Inc. | 69,310 | $101.9K | 0.00% | −5,994−8.0% | Reduced |
| MetLife Investment Management | 67,229 | $98.8K | 0.00% | −22,026−24.7% | Reduced |
| Amundi | 69,980 | $95.2K | 0.00% | +8,001+12.9% | Added |
| Janus Henderson Group PLC | 66,187 | $93.7K | 0.00% | 00.0% | Unchanged |