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, Q4 2025
Institutional positions in Ironwood Pharmaceuticals Inc as of Dec 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
- 199
- +38 vs. Q3 2025
- Shares held
- 154.6M
- +6.08M (+4.1%) vs. Q3 2025
- Total value
- $520.2M
- +$325.4M (+167.1%) vs. Q3 2025
- New holders
- 56
- 64 more added
- Sold out
- 18
- 47 more reduced
5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Ironwood Pharmaceuticals Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Buckingham Strategic Partners | 59,617 | $200.9K | 0.00% | +7,322+14.0% | Added |
| Optimist Retirement Group LLC | 59,912 | $201.9K | 0.09% | +59,912 | New |
| Wedbush Securities Inc | 63,733 | $215.0K | 0.01% | +63,733 | New |
| Captrust Financial Advisors | 63,822 | $215.1K | 0.00% | +668+1.1% | Added |
| Rafferty Asset Management, LLC | 64,841 | $218.5K | 0.00% | +64,841 | New |
| Balyasny Asset Management LLC | 65,156 | $219.6K | 0.00% | +65,156 | New |
| EntryPoint Capital, LLC | 66,625 | $224.5K | 0.09% | +66,625 | New |
| Scotia Capital Inc. | 67,183 | $226.4K | 0.00% | +67,183 | New |
| Public Employees Retirement System of Ohio | 67,888 | $228.8K | 0.00% | +7,120+11.7% | Added |
| CIBC World Markets Inc. | 71,331 | $240.4K | 0.00% | +71,331 | New |
| Intech Investment Management LLC | 71,573 | $241.2K | 0.00% | −621−0.9% | Reduced |
| Virtus Investment Advisers, Inc. | 74,311 | $250.4K | 0.07% | +74,311 | New |
| JustInvest LLC | 74,839 | $252.2K | 0.00% | +2,133+2.9% | Added |
| SmartHarvest Portfolios, LLC | 75,585 | $254.7K | 0.09% | +75,585 | New |
| Exchange Traded Concepts, LLC | 76,554 | $258.0K | 0.00% | −119,178−60.9% | Reduced |
| STRS Ohio | 76,600 | $258.1K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 76,951 | $259.3K | 0.00% | +5,598+7.8% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 78,103 | $263.1K | 0.00% | +5,132+7.0% | Added |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 79,013 | $266.3K | 0.00% | −45,862−36.7% | Reduced |
| MetLife Investment Management | 87,521 | $294.9K | 0.00% | +29,512+50.9% | Added |
| Pallas Capital Advisors LLC | 87,975 | $296.5K | 0.01% | +406+0.5% | Added |
| Squarepoint Ops LLC | 88,880 | $299.5K | 0.00% | +68,613+338.5% | Added |
| Price T Rowe Associates Inc | 99,363 | $335.0K | 0.00% | +19,185+23.9% | Added |
| Cercano Management LLC | 101,378 | $341.6K | 0.01% | 00.0% | Unchanged |
| Integrated Quantitative Investments LLC | 102,654 | $345.9K | 0.07% | +102,654 | New |
| Mariner, LLC | 114,119 | $384.2K | 0.00% | +12,806+12.6% | Added |
| D. E. Shaw & Co., Inc. | 117,446 | $395.8K | 0.00% | −254,824−68.5% | Reduced |
| Quantinno Capital Management LP | 118,893 | $400.7K | 0.00% | +118,893 | New |
| Ameriprise Financial Inc | 119,969 | $404.3K | 0.00% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 136,507 | $460.0K | 0.03% | +136,507 | New |
| Nuveen, LLC | 139,487 | $470.1K | 0.00% | +139,487 | New |
| Prudential Financial Inc | 141,129 | $475.6K | 0.00% | +91,194+182.6% | Added |
| State of Wyoming | 157,325 | $530.2K | 0.06% | −205,082−56.6% | Reduced |
| Creative Planning | 162,075 | $546.2K | 0.00% | +71,919+79.8% | Added |
| Winton Group Ltd | 164,335 | $553.8K | 0.02% | +164,335 | New |
| KLP Kapitalforvaltning AS | 174,200 | $587.1K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 176,582 | $595.1K | 0.00% | +75,330+74.4% | Added |
| State of Wisconsin Investment Board | 180,040 | $606.7K | 0.00% | +180,040 | New |
| Persistent Asset Partners Ltd | 182,046 | $613.5K | 0.29% | +182,046 | New |
| Canada Pension Plan Investment Board | 188,000 | $633.6K | 0.00% | +188,000 | New |
| Hennion & Walsh Asset Management, Inc. | 196,032 | $660.6K | 0.02% | +26,539+15.7% | Added |
| Wealth Enhancement Advisory Services, LLC | 155,523 | $664.9K | 0.00% | +1,135+0.7% | Added |
| Alliancebernstein L.P. | 199,520 | $672.4K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 199,908 | $673.7K | 0.00% | −23,321−10.4% | Reduced |
| JPMorgan Chase & Co | 214,607 | $723.2K | 0.00% | +102,450+91.3% | Added |
| Omers Administration Corp | 215,110 | $724.9K | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 223,969 | $754.8K | 0.00% | −420,077−65.2% | Reduced |
| CWM, LLC | 232,984 | $785.0K | 0.00% | +194+0.1% | Added |
| Russell Investments Group, Ltd. | 265,357 | $893.7K | 0.00% | −61,210−18.7% | Reduced |
| Los Angeles Capital Management LLC | 634,331 | $951.5K | 0.00% | −495,721−43.9% | Reduced |
| O'Shaughnessy Asset Management, LLC | 290,278 | $978.2K | 0.01% | +290,278 | New |
| Dimensional Fund Advisors LP | 330,836 | $1.11M | 0.00% | +240,463+266.1% | Added |
| Cerity Partners LLC | 338,512 | $1.14M | 0.00% | −536−0.2% | Reduced |
| Robeco Institutional Asset Management B.V. | 342,998 | $1.16M | 0.00% | 00.0% | Unchanged |
| Franklin Resources Inc | 385,583 | $1.30M | 0.00% | +362,332+1,558.4% | Added |
| Barclays PLC | 392,904 | $1.32M | 0.00% | +95,586+32.1% | Added |
| Arrowstreet Capital, Limited Partnership | 412,061 | $1.39M | 0.00% | +412,061 | New |
| Range Financial Group LLC | 426,095 | $1.44M | 0.50% | +426,095 | New |
| Susquehanna International Group, LLP | 448,799 | $1.51M | 0.00% | +351,933+363.3% | Added |
| Invesco Ltd. | 449,219 | $1.51M | 0.00% | +82,687+22.6% | Added |
| Bridgeway Capital Management, LLC | 495,993 | $1.67M | 0.04% | +345,993+230.7% | Added |
| Wellington Management Group LLP | 503,942 | $1.70M | 0.00% | +503,942 | New |
| Bank of New York Mellon Corp | 510,207 | $1.72M | 0.00% | +7,129+1.4% | Added |
| UBS Group AG | 510,543 | $1.72M | 0.00% | −301,121−37.1% | Reduced |
| Walleye Capital LLC | 527,936 | $1.78M | 0.01% | +527,936 | New |
| Millennium Management LLC | 560,713 | $1.89M | 0.00% | +310,594+124.2% | Added |
| Gsa Capital Partners LLP | 571,613 | $1.93M | 0.17% | +262,084+84.7% | Added |
| Ieq Capital, LLC | 633,260 | $2.13M | 0.01% | −28,438−4.3% | Reduced |
| Amundi | 642,830 | $2.17M | 0.00% | +642,830 | New |
| Exome Asset Management LLC | 648,532 | $2.19M | 1.08% | +648,532 | New |
| SEI Investments Co | 673,862 | $2.27M | 0.00% | −9,742−1.4% | Reduced |
| Diadema Partners LP | 683,611 | $2.30M | 1.37% | +683,611 | New |
| FMR LLC | 686,737 | $2.31M | 0.00% | +126,791+22.6% | Added |
| Morgan Stanley | 739,685 | $2.49M | 0.00% | +262,585+55.0% | Added |
| Raymond James Financial Inc | 869,826 | $2.93M | 0.00% | +854,780+5,681.1% | Added |
| Lazard Asset Management LLC | 1,000,445 | $3.37M | 0.01% | +1,000,445 | New |
| Deutsche Bank AG | 1,109,924 | $3.74M | 0.00% | −417,305−27.3% | Reduced |
| Hillsdale Investment Management Inc. | 1,156,378 | $3.90M | 0.11% | +1,156,378 | New |
| Northern Trust Corp | 1,233,685 | $4.16M | 0.00% | −107,221−8.0% | Reduced |
| Goldman Sachs Group Inc | 1,275,315 | $4.30M | 0.00% | +190,948+17.6% | Added |
| Qube Research & Technologies Ltd | 1,681,229 | $5.67M | 0.01% | −1,125,681−40.1% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 1,990,927 | $6.71M | 0.02% | −170,891−7.9% | Reduced |
| Jacobs Levy Equity Management, Inc | 2,759,667 | $9.30M | 0.04% | +839,137+43.7% | Added |
| Jane Street Group, LLC | 2,819,562 | $9.50M | 0.01% | +498,467+21.5% | Added |
| Two Sigma Investments, LP | 2,853,205 | $9.62M | 0.01% | +318,694+12.6% | Added |
| Two Sigma Advisers, LP | 3,140,100 | $10.6M | 0.02% | −176,400−5.3% | Reduced |
| Federated Hermes, Inc. | 3,318,137 | $11.2M | 0.02% | +1,161,033+53.8% | Added |
| Geode Capital Management, LLC | 3,623,534 | $12.2M | 0.00% | +8,547+0.2% | Added |
| State Street Corp | 4,411,222 | $14.9M | 0.00% | +1,254,915+39.8% | Added |
| Marshall Wace, LLP | 4,424,002 | $14.9M | 0.01% | +1,279,863+40.7% | Added |
| AQR Capital Management LLC | 4,723,531 | $15.9M | 0.01% | −655,004−12.2% | Reduced |
| Charles Schwab Investment Management Inc | 4,975,939 | $16.8M | 0.00% | +58,603+1.2% | Added |
| Acadian Asset Management LLC | 6,457,817 | $21.7M | 0.04% | −44,676−0.7% | Reduced |
| Renaissance Technologies LLC | 8,204,973 | $27.7M | 0.04% | −147,200−1.8% | Reduced |
| Bank of America Corp | 11,521,660 | $38.8M | 0.00% | −173,884−1.5% | Reduced |
| BlackRock, Inc. | 12,784,806 | $43.1M | 0.00% | +722,248+6.0% | Added |
| Sarissa Capital Management LP | 15,919,435 | $53.6M | 24.07% | 00.0% | Unchanged |
| Vanguard Group Inc | 15,958,196 | $53.8M | 0.00% | −113,810−0.7% | Reduced |
| Armistice Capital, LLC | 16,025,000 | $54.0M | 1.32% | −125,000−0.8% | Reduced |
| Kynam Capital Management, LP | 0 | $0 | 0.00% | −5,466,825−100.0% | Sold out |