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 | $195.0M |
| Q2 2025 | 155 | $104.9M |
| Q1 2025 | 200 | $228.6M |
| Q4 2024 | 223 | $727.6M |
| Q3 2024 | 221 | $675.0M |
| Q2 2024 | 227 | $1.13B |
| Q1 2024 | 261 | $1.56B |
| Q4 2023 | 251 | $1.93B |
| Q3 2023 | 249 | $1.56B |
| Q2 2023 | 252 | $1.77B |
| Q1 2023 | 255 | $1.75B |
| Q4 2022 | 250 | $2.08B |
| Q3 2022 | 245 | $1.76B |
| Q2 2022 | 240 | $2.02B |
| Q1 2022 | 221 | $2.10B |
| Q4 2021 | 213 | $2.01B |
| 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 17,788,557 | $74.9M | 0.00% | +4,425,627+33.1% | Added |
| Armistice Capital, LLC | 13,932,000 | $58.7M | 1.62% | −1,096,000−7.3% | Reduced |
| Sarissa Capital Management LP | 9,188,635 | $38.7M | 21.75% | 00.0% | Unchanged |
| State Street Corp | 8,809,601 | $37.1M | 0.00% | +1,352,657+18.1% | Added |
| Bank of America Corp | 8,683,803 | $36.6M | 0.00% | +8960.0% | Added |
| Renaissance Technologies LLC | 7,993,226 | $33.7M | 0.05% | −67,847−0.8% | Reduced |
| Vanguard Capital Management LLC | 6,608,508 | $27.8M | 0.00% | +511,054+8.4% | Added |
| AQR Capital Management LLC | 6,465,921 | $27.2M | 0.01% | −1,069,159−14.2% | Reduced |
| Acadian Asset Management LLC | 5,853,331 | $24.6M | 0.03% | −723,941−11.0% | Reduced |
| Vanguard Portfolio Management LLC | 5,513,355 | $23.2M | 0.00% | −1,168,682−17.5% | Reduced |
| Geode Capital Management, LLC | 4,831,657 | $20.3M | 0.00% | +288,135+6.3% | Added |
| Two Sigma Investments, LP | 4,556,089 | $19.2M | 0.01% | −1,292,187−22.1% | Reduced |
| Marshall Wace, LLP | 4,290,093 | $18.1M | 0.02% | −234,971−5.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 4,065,964 | $17.1M | 0.06% | +433,487+11.9% | Added |
| Goldman Sachs Group Inc | 3,313,808 | $14.0M | 0.00% | +623,174+23.2% | Added |
| Charles Schwab Investment Management Inc | 3,302,242 | $13.9M | 0.00% | −1,435,615−30.3% | Reduced |
| Federated Hermes, Inc. | 3,231,238 | $13.6M | 0.02% | −117,568−3.5% | Reduced |
| Arrowstreet Capital, Limited Partnership | 3,017,089 | $12.7M | 0.01% | −380,153−11.2% | Reduced |
| Dimensional Fund Advisors LP | 2,522,891 | $10.6M | 0.00% | +440,836+21.2% | Added |
| Mackenzie Financial Corp | 2,367,493 | $9.97M | 0.01% | +1,807,459+322.7% | Added |
| Morgan Stanley | 1,859,914 | $7.83M | 0.00% | +1,035,095+125.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 1,811,714 | $7.63M | 0.01% | −23,710−1.3% | Reduced |
| Northern Trust Corp | 1,373,974 | $5.78M | 0.00% | +108,132+8.5% | Added |
| Hillsdale Investment Management Inc. | 1,250,428 | $5.26M | 0.12% | +13,800+1.1% | Added |
| Wells Fargo & Company | 1,206,198 | $5.08M | 0.00% | +1,147,348+1,949.6% | Added |
| Deutsche Bank AG | 1,158,138 | $4.88M | 0.00% | +33,149+2.9% | Added |
| Pacer Advisors, Inc. | 1,095,513 | $4.61M | 0.01% | −38,999−3.4% | Reduced |
| Vanguard Fiduciary Trust Co | 1,040,335 | $4.38M | 0.00% | +51,705+5.2% | Added |
| Franklin Resources Inc | 1,006,979 | $4.24M | 0.00% | +262,341+35.2% | Added |
| FMR LLC | 909,488 | $3.83M | 0.00% | +119,102+15.1% | Added |
| State of Wisconsin Investment Board | 778,515 | $3.28M | 0.01% | +180,356+30.2% | Added |
| Raymond James Financial Inc | 725,085 | $3.05M | 0.00% | −38,870−5.1% | Reduced |
| Victory Capital Management Inc | 658,457 | $2.77M | 0.00% | −54,730−7.7% | Reduced |
| CWM Advisors, LLC | 630,072 | $2.65M | 0.11% | +120,131+23.6% | Added |
| HRT Financial LP | 577,337 | $2.43M | 0.00% | +577,337 | New |
| Ieq Capital, LLC | 561,588 | $2.36M | 0.01% | −181,135−24.4% | Reduced |
| Vanguard Global Advisers, LLC | 561,038 | $2.36M | 0.00% | −30,451−5.1% | Reduced |
| Prudential Financial Inc | 537,199 | $2.26M | 0.00% | +87,360+19.4% | Added |
| Bank of New York Mellon Corp | 508,880 | $2.14M | 0.00% | +24,844+5.1% | Added |
| Citadel Advisors LLC | 502,403 | $2.12M | 0.00% | +384,127+324.8% | Added |
| Voya Investment Management LLC | 484,450 | $2.04M | 0.00% | +338,631+232.2% | Added |
| Wellington Management Group LLP | 468,821 | $1.97M | 0.00% | +15,306+3.4% | Added |
| SEI Investments Co | 459,417 | $1.93M | 0.00% | −283,131−38.1% | Reduced |
| O'Shaughnessy Asset Management, LLC | 438,911 | $1.85M | 0.01% | +310,668+242.2% | Added |
| Wedge Capital Management L L P | 435,650 | $1.83M | 0.03% | −104,842−19.4% | Reduced |
| Segall Bryant & Hamill, LLC | 408,064 | $1.72M | 0.02% | +129,863+46.7% | Added |
| Invesco Ltd. | 403,209 | $1.70M | 0.00% | −144,151−26.3% | Reduced |
| Man Group plc | 392,117 | $1.65M | 0.00% | −148,747−27.5% | Reduced |
| Bridgeway Capital Management, LLC | 389,793 | $1.64M | 0.03% | −50,700−11.5% | Reduced |
| UBS Group AG | 389,529 | $1.64M | 0.00% | −543,696−58.3% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 375,288 | $1.58M | 0.00% | 00.0% | Unchanged |
| Ritholtz Wealth Management | 360,094 | $1.52M | 0.02% | +272,559+311.4% | Added |
| Nuveen, LLC | 355,372 | $1.50M | 0.00% | +121,960+52.3% | Added |
| CM Management, LLC | 350,000 | $1.47M | 0.94% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 347,985 | $1.47M | 0.00% | −1,242,096−78.1% | Reduced |
| Robeco Institutional Asset Management B.V. | 342,998 | $1.44M | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 342,293 | $1.44M | 0.01% | −166,954−32.8% | Reduced |
| Virtus Investment Advisers, Inc. | 318,598 | $1.34M | 0.31% | +242,429+318.3% | Added |
| LSV Asset Management | 308,271 | $1.30M | 0.00% | 00.0% | Unchanged |
| CWA Asset Management Group, LLC | 290,366 | $1.22M | 0.04% | +290,366 | New |
| Globeflex Capital L P | 259,809 | $1.09M | 0.14% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 259,512 | $1.09M | 0.07% | −394,933−60.3% | Reduced |
| Citigroup Inc | 226,824 | $954.9K | 0.00% | +187,419+475.6% | Added |
| Russell Investments Group, Ltd. | 224,821 | $946.5K | 0.00% | −36,968−14.1% | Reduced |
| JPMorgan Chase & Co | 212,575 | $914.1K | 0.00% | +94,384+79.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 219,445 | $913.3K | 0.00% | −7,243−3.2% | Reduced |
| Cerity Partners LLC | 208,019 | $875.8K | 0.00% | −160,351−43.5% | Reduced |
| Rhumbline Advisers | 205,095 | $863.4K | 0.00% | +12,161+6.3% | Added |
| Martingale Asset Management L P | 204,991 | $863.0K | 0.02% | 00.0% | Unchanged |
| Evolve Private Wealth, LLC | 186,864 | $786.7K | 0.05% | +171,397+1,108.1% | Added |
| Vident Advisory, LLC | 180,929 | $761.7K | 0.01% | −3,408−1.8% | Reduced |
| Creative Planning | 177,030 | $745.3K | 0.00% | −490−0.3% | Reduced |
| KLP Kapitalforvaltning AS | 174,200 | $733.4K | 0.00% | 00.0% | Unchanged |
| Mariner, LLC | 168,472 | $709.3K | 0.00% | −39,307−18.9% | Reduced |
| Omers Administration Corp | 159,010 | $669.4K | 0.00% | −67,300−29.7% | Reduced |
| Rafferty Asset Management, LLC | 152,878 | $643.6K | 0.00% | −63,745−29.4% | Reduced |
| Quantinno Capital Management LP | 150,604 | $634.0K | 0.00% | +20,901+16.1% | Added |
| Alliancebernstein L.P. | 165,790 | $581.9K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 132,748 | $558.9K | 0.00% | −32,346−19.6% | Reduced |
| Canada Pension Plan Investment Board | 130,900 | $551.1K | 0.00% | −4,100−3.0% | Reduced |
| Jane Street Group, LLC | 129,700 | $546.0K | 0.00% | −492,547−79.2% | Reduced |
| Susquehanna International Group, LLP | 129,237 | $544.1K | 0.00% | −1,342,920−91.2% | Reduced |
| SG Americas Securities, LLC | 129,280 | $544.0K | 0.00% | +15,650+13.8% | Added |
| Price T Rowe Associates Inc | 128,772 | $543.0K | 0.00% | +4,458+3.6% | Added |
| HSBC Holdings PLC | 126,100 | $541.6K | 0.00% | +96,394+324.5% | Added |
| SRS Capital Advisors, Inc. | 126,966 | $534.5K | 0.00% | +125,263+7,355.4% | Added |
| Mercer Global Advisors Inc | 126,160 | $531.1K | 0.00% | +11,080+9.6% | Added |
| D. E. Shaw & Co., Inc. | 122,907 | $517.4K | 0.00% | +74,969+156.4% | Added |
| Optimist Retirement Group LLC | 102,054 | $429.6K | 0.17% | +7,223+7.6% | Added |
| State of Wyoming | 101,781 | $428.5K | 0.04% | −26,394−20.6% | Reduced |
| Cercano Management LLC | 101,378 | $426.8K | 0.06% | 00.0% | Unchanged |
| Barclays PLC | 100,123 | $421.5K | 0.00% | +10,153+11.3% | Added |
| Ameriprise Financial Inc | 99,526 | $419.0K | 0.00% | +185+0.2% | Added |
| Engineers Gate Manager LP | 98,052 | $412.8K | 0.01% | +18,200+22.8% | Added |
| MetLife Investment Management | 96,208 | $405.0K | 0.00% | +32,441+50.9% | Added |
| Integrated Quantitative Investments LLC | 93,689 | $394.4K | 0.06% | −458,415−83.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 93,191 | $393.9K | 0.00% | +3,082+3.4% | Added |
| Fuller & Thaler Asset Management, Inc. | 90,321 | $380.3K | 0.00% | −760−0.8% | Reduced |
| Winton Group Ltd | 84,156 | $354.3K | 0.01% | −157,590−65.2% | Reduced |
| Allspring Global Investments Holdings, LLC | 82,315 | $339.1K | 0.00% | +3,122+3.9% | Added |