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 2026
Institutional positions in Ironwood Pharmaceuticals Inc as of Mar 31, 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
- 227
- +32 vs. Q4 2025
- Shares held
- 161.5M
- +22.8M (+16.5%) vs. Q4 2025
- Total value
- $566.8M
- +$100.5M (+21.5%) vs. Q4 2025
- New holders
- 57
- 86 more added
- Sold out
- 25
- 56 more reduced
4 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New York State Common Retirement Fund | 41,869 | $147.0K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 43,005 | $150.9K | 0.00% | −4,583−9.6% | Reduced |
| National Bank of Canada | 44,094 | $154.8K | 0.00% | +44,094 | New |
| Police & Firemen's Retirement System of New Jersey | 44,115 | $154.8K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 45,643 | $160.2K | 0.00% | +13,189+40.6% | Added |
| D. E. Shaw & Co., Inc. | 47,938 | $168.3K | 0.00% | −69,508−59.2% | Reduced |
| Merit Financial Group, LLC | 54,707 | $192.0K | 0.00% | +5,329+10.8% | Added |
| Scotia Capital Inc. | 55,272 | $194.0K | 0.00% | −11,911−17.7% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 56,132 | $197.0K | 0.00% | −22,881−29.0% | Reduced |
| Colony Group, LLC | 57,185 | $200.7K | 0.00% | +13,220+30.1% | Added |
| Virtus ETF Advisers LLC | 58,000 | $203.6K | 0.09% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 58,377 | $204.9K | 0.00% | +58,377 | New |
| Wells Fargo & Company | 58,850 | $206.6K | 0.00% | −117,732−66.7% | Reduced |
| Wedbush Securities Inc | 60,703 | $213.0K | 0.01% | −3,030−4.8% | Reduced |
| Buckingham Strategic Partners | 62,072 | $217.9K | 0.00% | +2,455+4.1% | Added |
| Bank of Montreal | 62,750 | $220.3K | 0.00% | +62,750 | New |
| MetLife Investment Management | 63,767 | $223.8K | 0.00% | −23,754−27.1% | Reduced |
| Public Employees Retirement System of Ohio | 67,030 | $235.3K | 0.00% | −858−1.3% | Reduced |
| JustInvest LLC | 71,118 | $249.6K | 0.00% | −3,721−5.0% | Reduced |
| CIBC World Markets Inc. | 71,330 | $250.4K | 0.00% | −10.0% | Reduced |
| Captrust Financial Advisors | 74,930 | $262.7K | 0.00% | +11,108+17.4% | Added |
| SmartHarvest Portfolios, LLC | 75,462 | $264.9K | 0.11% | −123−0.2% | Reduced |
| Virtus Investment Advisers, Inc. | 76,169 | $267.4K | 0.07% | +1,858+2.5% | Added |
| Engineers Gate Manager LP | 79,852 | $280.3K | 0.00% | +41,151+106.3% | Added |
| Pallas Capital Advisors LLC | 80,567 | $282.8K | 0.01% | −7,408−8.4% | Reduced |
| EntryPoint Capital, LLC | 86,874 | $304.9K | 0.09% | +20,249+30.4% | Added |
| Ritholtz Wealth Management | 87,535 | $307.2K | 0.01% | +87,535 | New |
| Allspring Global Investments Holdings, LLC | 79,193 | $308.9K | 0.00% | +79,193 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 90,109 | $312.1K | 0.00% | +12,006+15.4% | Added |
| Barclays PLC | 89,970 | $315.8K | 0.00% | −302,934−77.1% | Reduced |
| Fuller & Thaler Asset Management, Inc. | 91,081 | $319.7K | 0.00% | +91,081 | New |
| Optimist Retirement Group LLC | 94,831 | $332.9K | 0.15% | +34,919+58.3% | Added |
| Profund Advisors LLC | 97,281 | $341.5K | 0.01% | +70,798+267.3% | Added |
| STRS Ohio | 97,400 | $341.9K | 0.00% | +20,800+27.2% | Added |
| Ameriprise Financial Inc | 99,341 | $348.7K | 0.00% | −20,628−17.2% | Reduced |
| Cercano Management LLC | 101,378 | $355.8K | 0.02% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 118,191 | $381.8K | 0.00% | −96,416−44.9% | Reduced |
| SG Americas Securities, LLC | 113,630 | $399.0K | 0.00% | +55,883+96.8% | Added |
| Mercer Global Advisors Inc | 115,080 | $403.9K | 0.00% | +38,129+49.5% | Added |
| Citadel Advisors LLC | 118,276 | $415.1K | 0.00% | −105,693−47.2% | Reduced |
| Price T Rowe Associates Inc | 124,314 | $437.0K | 0.00% | +24,951+25.1% | Added |
| State of Wyoming | 128,175 | $449.9K | 0.05% | −29,150−18.5% | Reduced |
| O'Shaughnessy Asset Management, LLC | 128,243 | $450.1K | 0.00% | −162,035−55.8% | Reduced |
| Quantinno Capital Management LP | 129,703 | $455.3K | 0.00% | +10,810+9.1% | Added |
| Canada Pension Plan Investment Board | 135,000 | $473.9K | 0.00% | −53,000−28.2% | Reduced |
| Voya Investment Management LLC | 145,819 | $511.8K | 0.00% | +117,060+407.0% | Added |
| Legato Capital Management LLC | 156,059 | $547.8K | 0.05% | +156,059 | New |
| Alliancebernstein L.P. | 165,790 | $558.7K | 0.00% | −33,730−16.9% | Reduced |
| Fifth Third Bancorp | 165,094 | $579.5K | 0.00% | +165,094 | New |
| KLP Kapitalforvaltning AS | 174,200 | $611.4K | 0.00% | 00.0% | Unchanged |
| Creative Planning | 177,520 | $623.1K | 0.00% | +15,445+9.5% | Added |
| Vident Advisory, LLC | 184,337 | $647.0K | 0.01% | +184,337 | New |
| Hennion & Walsh Asset Management, Inc. | 184,485 | $647.5K | 0.02% | −11,547−5.9% | Reduced |
| Rhumbline Advisers | 192,934 | $677.2K | 0.00% | −6,974−3.5% | Reduced |
| Martingale Asset Management L P | 204,991 | $719.5K | 0.02% | +204,991 | New |
| Mariner, LLC | 207,779 | $729.1K | 0.00% | +93,660+82.1% | Added |
| Wealth Enhancement Advisory Services, LLC | 226,688 | $740.9K | 0.00% | +71,165+45.8% | Added |
| Rafferty Asset Management, LLC | 216,623 | $760.3K | 0.00% | +151,782+234.1% | Added |
| Walleye Capital LLC | 225,136 | $790.2K | 0.00% | −302,800−57.4% | Reduced |
| Omers Administration Corp | 226,310 | $794.3K | 0.01% | +11,200+5.2% | Added |
| Nuveen, LLC | 233,412 | $819.3K | 0.00% | +93,925+67.3% | Added |
| Winton Group Ltd | 241,746 | $848.5K | 0.03% | +77,411+47.1% | Added |
| Harvest Investment Services, LLC | 241,881 | $849.0K | 0.16% | +221,711+1,099.2% | Added |
| Globeflex Capital L P | 259,809 | $911.9K | 0.14% | +259,809 | New |
| Russell Investments Group, Ltd. | 261,789 | $915.1K | 0.00% | −3,568−1.3% | Reduced |
| Segall Bryant & Hamill, LLC | 278,201 | $976.5K | 0.01% | +278,201 | New |
| CWM, LLC | 278,217 | $976.5K | 0.00% | +45,233+19.4% | Added |
| Lazard Asset Management LLC | 290,189 | $1.02M | 0.00% | −710,256−71.0% | Reduced |
| Toroso Investments, LLC | 304,475 | $1.07M | 0.00% | +304,475 | New |
| LSV Asset Management | 308,271 | $1.08M | 0.00% | +299,223+3,307.1% | Added |
| Robeco Institutional Asset Management B.V. | 342,998 | $1.20M | 0.00% | 00.0% | Unchanged |
| CM Management, LLC | 350,000 | $1.23M | 1.03% | +350,000 | New |
| Cerity Partners LLC | 368,370 | $1.29M | 0.00% | +29,858+8.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 375,288 | $1.32M | 0.00% | +375,288 | New |
| Amundi | 404,237 | $1.42M | 0.00% | −238,593−37.1% | Reduced |
| Range Financial Group LLC | 433,256 | $1.52M | 0.51% | +7,161+1.7% | Added |
| Bridgeway Capital Management, LLC | 440,493 | $1.55M | 0.03% | −55,500−11.2% | Reduced |
| Prudential Financial Inc | 449,839 | $1.58M | 0.00% | +308,710+218.7% | Added |
| Wellington Management Group LLP | 453,515 | $1.59M | 0.00% | −50,427−10.0% | Reduced |
| Millennium Management LLC | 457,114 | $1.60M | 0.00% | −103,599−18.5% | Reduced |
| Bank of New York Mellon Corp | 484,036 | $1.70M | 0.00% | −26,171−5.1% | Reduced |
| Los Angeles Capital Management LLC | 509,247 | $1.79M | 0.01% | −125,084−19.7% | Reduced |
| CWM Advisors, LLC | 509,941 | $1.79M | 0.10% | +509,941 | New |
| Wedge Capital Management L L P | 540,492 | $1.90M | 0.04% | +540,492 | New |
| Man Group plc | 540,864 | $1.90M | 0.00% | +493,205+1,034.9% | Added |
| Invesco Ltd. | 547,360 | $1.92M | 0.00% | +98,141+21.8% | Added |
| Integrated Quantitative Investments LLC | 552,104 | $1.94M | 0.35% | +449,450+437.8% | Added |
| Mackenzie Financial Corp | 560,034 | $1.97M | 0.00% | +548,490+4,751.3% | Added |
| Vanguard Global Advisers, LLC | 591,489 | $2.08M | 0.00% | +591,489 | New |
| State of Wisconsin Investment Board | 598,159 | $2.10M | 0.00% | +418,119+232.2% | Added |
| Jane Street Group, LLC | 622,247 | $2.18M | 0.00% | −2,197,315−77.9% | Reduced |
| Gsa Capital Partners LLP | 654,445 | $2.30M | 0.14% | +82,832+14.5% | Added |
| Victory Capital Management Inc | 713,187 | $2.50M | 0.00% | +695,145+3,852.9% | Added |
| SEI Investments Co | 742,548 | $2.61M | 0.00% | +68,686+10.2% | Added |
| Ieq Capital, LLC | 742,723 | $2.61M | 0.01% | +109,463+17.3% | Added |
| Franklin Resources Inc | 744,638 | $2.61M | 0.00% | +359,055+93.1% | Added |
| Raymond James Financial Inc | 763,955 | $2.68M | 0.00% | −105,871−12.2% | Reduced |
| FMR LLC | 790,386 | $2.77M | 0.00% | +103,649+15.1% | Added |
| Morgan Stanley | 824,819 | $2.90M | 0.00% | +85,134+11.5% | Added |
| UBS Group AG | 933,225 | $3.28M | 0.00% | +422,682+82.8% | Added |