Ironwood PharmaceuticalsIRWD
13F holders, Q3 2024 (September 30)221holders −6
35new positions
44sold out
7famous investors
$4.12avg. 13F price*
At the end of Q3 2024, 221 institutions reported holding Ironwood Pharmaceuticals Inc. (IRWD) in their 13F filings, down 6 from Q2 2024. 35 opened new positions and 44 sold out. The largest holders were BlackRock, Inc. ($94.4M), Vanguard Group Inc. ($90.8M) and Sarissa Capital Management LP ($67.5M). 7 famous investors held it, including Jim Simons / Peter Brown (0.1% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Ironwood Pharmaceuticals Inc.
- CUSIP
- 46333X108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 35 | $12.5M |
| Exits | 44 | $51.9M |
All 13F filers, Q2 2024 → Q3 2024: 13,465,929 shares bought and 21,548,426 shares sold, net −8,082,497 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 221 holders
| BlackRock, Inc. | 0.00% | — | 22,919,857 | $94.4M |
| Vanguard Group Inc. | 0.00% | Add +2.2% | 22,038,097 | $90.8M |
| Sarissa Capital Management LP | 16.78% | No change | 16,390,000 | $67.5M |
| Pacer Advisors, Inc. | 0.10% | Add +26.6% | 11,279,822 | $46.5M |
| State Street Corp. | 0.00% | Add +7.3% | 9,919,865 | $40.9M |
| Renaissance Technologies | 0.05% | Add +0.3% | 8,597,198 | $35.4M |
| Armistice Capital, LLC | 0.88% | Add +5.1% | 8,200,000 | $33.8M |
| LSV Asset Management | 0.04% | Reduce -16.8% | 5,051,601 | $20.8M |
| Braidwell LP | 0.79% | No change | 4,438,232 | $18.3M |
| Morgan Stanley | 0.00% | Reduce -11.1% | 4,321,589 | $17.8M |
| Jacobs Levy Equity Management, Inc. | 0.07% | Reduce -2.1% | 4,265,100 | $17.6M |
| Kynam Capital Management, LP | 1.18% | Add +124.5% | 3,685,563 | $15.2M |
| Geode Capital Management, LLC | 0.00% | Reduce -2.3% | 3,293,542 | $13.6M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +23.7% | 1,904,271 | $7.8M |
| Northern Trust Corp. | 0.00% | Add +2.0% | 1,506,148 | $6.2M |
| Jupiter Asset Management Ltd. | 0.05% | No change | 1,448,435 | $6.0M |
| Two Sigma Advisers, LP | 0.01% | Add +5.1% | 1,260,500 | $5.2M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -21.8% | 1,223,137 | $5.0M |
| Saturn V Capital Management LP | 1.65% | Add +0.6% | 1,120,409 | $4.6M |
| Deutsche Bank AG | 0.00% | Add +1.5% | 1,063,199 | $4.4M |
| Stonepine Capital Management, LLC | 2.60% | Add +1982.8% | 1,000,000 | $4.1M |
| UBS Group AG | 0.00% | Reduce -48.5% | 946,884 | $3.9M |
| Millennium Management | 0.00% | Reduce -30.3% | 925,872 | $3.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -12.5% | 912,778 | $3.8M |
| Man Group plc | 0.01% | Reduce -70.0% | 894,726 | $3.7M |
| Two Sigma Investments, LP | 0.01% | Reduce -2.9% | 890,963 | $3.7M |
| Acadian Asset Management LLC | 0.01% | New | 786,292 | $3.2M |
| Principal Financial Group Inc. | 0.00% | Reduce -7.5% | 735,727 | $3.0M |
| Citadel Advisors | 0.00% | Add +70.3% | 697,426 | $2.9M |
| Royce & Associates LP | 0.02% | Add +10.8% | 662,934 | $2.7M |
| Ameriprise Financial Inc. | 0.00% | Reduce -6.3% | 598,202 | $2.5M |
| Capital Fund Management S.A. | 0.03% | Add +90.2% | 581,359 | $2.4M |
| State of Wisconsin Investment Board | 0.01% | Add +226.6% | 573,426 | $2.4M |
| Qube Research & Technologies Ltd | 0.00% | New | 570,775 | $2.4M |
| AQR Capital Management | 0.00% | Reduce -17.6% | 564,113 | $2.3M |
| Invesco Ltd. | 0.00% | Reduce -68.3% | 527,694 | $2.2M |
| Redwood Investment Management, LLC | 0.19% | Add +12.4% | 534,560 | $2.1M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -16.5% | 463,047 | $1.9M |
| Emerald Advisers, LLC | 0.07% | Reduce -41.9% | 456,770 | $1.9M |
| Parkman Healthcare Partners LLC | 0.24% | Reduce -48.0% | 455,477 | $1.9M |
| Bank of America Corp. | 0.00% | Reduce -41.1% | 419,773 | $1.7M |
| Barclays PLC | 0.00% | Add +111.3% | 416,320 | $1.7M |
| Sei Investments Co. | 0.00% | New | 410,680 | $1.7M |
| Legal & General Group Plc | 0.00% | Reduce -0.1% | 408,922 | $1.7M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -11.8% | 405,354 | $1.7M |
| Rafferty Asset Management, LLC | 0.01% | Add +3.2% | 396,664 | $1.6M |
| Norges Bank | 0.00% | Reduce -71.7% | 394,266 | $1.6M |
| Robeco Institutional Asset Management B.V. | 0.00% | Add +1293.6% | 380,960 | $1.6M |
| Gsa Capital Partners LLP | 0.11% | Add +194.9% | 351,193 | $1.4M |
| Hodges Capital Management Inc. | 0.09% | Reduce -66.6% | 347,500 | $1.4M |
| Rhumbline Advisers | 0.00% | Reduce -7.6% | 337,965 | $1.4M |
| Franklin Resources Inc. | 0.00% | Reduce -2.2% | 313,048 | $1.3M |
| Jane Street Group, LLC | 0.00% | Add +102.7% | 323,638 | $1.3M |
| OMERS ADMINISTRATION Corp | 0.01% | Reduce -3.8% | 320,410 | $1.3M |
| Wedge Capital Management L L P | 0.02% | New | 314,843 | $1.3M |
| Bridgeway Capital Management, LLC | 0.03% | No change | 311,200 | $1.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -83.4% | 306,865 | $1.3M |
| Public Sector Pension Investment Board | 0.01% | Reduce -3.1% | 298,286 | $1.2M |
| Walleye Capital LLC | 0.01% | Add +264.2% | 280,299 | $1.2M |
| Swiss National Bank | 0.00% | No change | 276,700 | $1.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -12.6% | 269,725 | $1.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -36.4% | 244,681 | $1.0M |
| Victory Capital Management Inc. | 0.00% | Reduce -2.0% | 218,009 | $898K |
| Weiss Asset Management LP | 0.03% | New | 216,707 | $893K |
| Alberta Investment Management Corp | 0.01% | No change | 210,731 | $868K |
| Dimensional Fund Advisors LP | 0.00% | Reduce -2.5% | 208,273 | $858K |
| Knott David M Jr | 0.30% | Reduce -44.0% | 207,033 | $853K |
| Emerald Mutual Fund Advisers Trust | 0.04% | Reduce -69.4% | 197,396 | $813K |
| Citigroup Inc. | 0.00% | Add +0.8% | 186,173 | $767K |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -47.7% | 181,593 | $748K |
| Hennion & Walsh Asset Management, Inc. | 0.03% | Add +31.8% | 170,811 | $704K |
| FMR LLC | 0.00% | Add +25.1% | 169,681 | $699K |
| Harbor Capital Advisors, Inc. | 0.03% | Add +50.1% | 168,071 | $692K |
| Macquarie Group Ltd. | 0.00% | No change | 167,200 | $689K |
| Alliancebernstein L.P. | 0.00% | No change | 163,070 | $672K |
| Vestcor Inc | 0.02% | Add +37.8% | 159,466 | $657K |
| BNP Paribas Financial Markets | 0.00% | Add +89.0% | 154,660 | $637K |
| Prudential Financial Inc. | 0.00% | Reduce -2.0% | 150,788 | $621K |
| Comerica Bank | 0.00% | Add +246.9% | 150,191 | $619K |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -17.8% | 148,510 | $611K |
| California State Teachers Retirement System | 0.00% | Reduce -1.9% | 135,142 | $557K |
| Dark Forest Capital Management LP | 0.07% | Add +112.7% | 128,414 | $529K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +150.7% | 126,289 | $520K |
| Alps Advisors Inc. | 0.00% | Reduce -5.2% | 117,535 | $484K |
| Siren, L.L.C. | 0.02% | — | 110,532 | $455K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.9% | 110,389 | $455K |
| Public Employees Retirement System of Ohio | 0.00% | Add +0.7% | 109,848 | $453K |
| Graham Capital Management, L.P. | 0.02% | New | 107,970 | $445K |
| T. Rowe Price Associates Inc. | 0.00% | Add +1.9% | 103,356 | $426K |
| Kennedy Capital Management LLC | 0.01% | Reduce -1.3% | 102,477 | $422K |
| Cercano Management LLC | 0.01% | New | 101,378 | $418K |
| Inspire Investing, LLC | 0.04% | Add +84.8% | 101,029 | $416K |
| Guggenheim Capital LLC | 0.00% | Add +11.5% | 100,251 | $413K |
| Massachusetts Financial Services Co. | 0.00% | Reduce -2.4% | 99,470 | $410K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +10.5% | 93,260 | $383K |
| Clearline Capital LP | 0.03% | No change | 92,870 | $383K |
| Ensign Peak Advisors, Inc | 0.00% | No change | 85,392 | $352K |
| Profund Advisors LLC | 0.01% | Add +9.3% | 82,369 | $339K |
| Susquehanna International Group, LLP | 0.00% | Add +12.5% | 81,674 | $336K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.0% | 81,171 | $334K |
"% of holder's portfolio" is IRWD's weight in each manager's 13F, not the share of Ironwood Pharmaceuticals Inc. the manager owns.