Ironwood PharmaceuticalsIRWD
13F holders, Q2 2024 (June 30)227holders −34
19new positions
50sold out
6famous investors
$6.52avg. 13F price*
At the end of Q2 2024, 227 institutions reported holding Ironwood Pharmaceuticals Inc. (IRWD) in their 13F filings, down 34 from Q1 2024. 19 opened new positions and 50 sold out. The largest holders were BlackRock Inc. ($149.2M), Vanguard Group Inc. ($140.6M) and Sarissa Capital Management LP ($106.9M). 6 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 Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Ironwood Pharmaceuticals Inc.
- CUSIP
- 46333X108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2024 → Q2 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 19 | $6.5M |
| Exits | 50 | $36.7M |
All 13F filers, Q1 2024 → Q2 2024: 19,049,666 shares bought and 19,860,654 shares sold, net −810,988 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 227 holders
| BlackRock Inc. | 0.00% | Reduce -5.3% | 22,877,015 | $149.2M |
| Vanguard Group Inc. | 0.00% | Add +10.5% | 21,563,414 | $140.6M |
| Sarissa Capital Management LP | 18.04% | No change | 16,390,000 | $106.9M |
| State Street Corp. | 0.00% | Reduce -33.6% | 9,242,841 | $60.3M |
| Pacer Advisors, Inc. | 0.14% | Add +23.6% | 8,907,639 | $58.1M |
| Renaissance Technologies | 0.09% | Add +20.7% | 8,571,898 | $55.9M |
| Armistice Capital, LLC | 1.33% | Add +44.4% | 7,800,000 | $50.9M |
| LSV Asset Management | 0.09% | Reduce -1.3% | 6,071,501 | $39.6M |
| Morgan Stanley | 0.00% | Add +81.5% | 4,860,828 | $31.7M |
| Braidwell LP | 1.48% | Add +27.2% | 4,438,232 | $28.9M |
| Jacobs Levy Equity Management, Inc. | 0.12% | Add +2.9% | 4,358,298 | $28.4M |
| Geode Capital Management, LLC | 0.00% | Add +7.2% | 3,372,322 | $22.0M |
| Man Group plc | 0.05% | Reduce -0.0% | 2,984,451 | $19.5M |
| Brown Capital Management LLC | 0.34% | Reduce -4.4% | 2,580,875 | $16.8M |
| JPMorgan Chase & Co. | 0.00% | Add +56.3% | 1,853,005 | $12.1M |
| UBS Group AG | 0.00% | Reduce -39.2% | 1,839,799 | $12.0M |
| Invesco Ltd. | 0.00% | Add +222.4% | 1,666,766 | $10.9M |
| Kynam Capital Management, LP | 1.12% | Add +1.0% | 1,641,891 | $10.7M |
| Goldman Sachs Group Inc. | 0.00% | Add +13.3% | 1,563,432 | $10.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +10.6% | 1,539,430 | $10.0M |
| Northern Trust Corp. | 0.00% | Reduce -3.6% | 1,476,543 | $9.6M |
| Jupiter Asset Management Ltd. | 0.09% | Reduce -2.1% | 1,448,435 | $9.4M |
| Glenmede Trust Co. NA | 0.05% | Add +0.4% | 1,395,983 | $9.1M |
| Norges Bank | 0.00% | Add +114.6% | 1,393,077 | $9.1M |
| Millennium Management | 0.01% | Add +188.0% | 1,328,760 | $8.7M |
| Two Sigma Advisers, LP | 0.02% | Reduce -6.7% | 1,199,000 | $7.8M |
| Saturn V Capital Management LP | 2.74% | Add +17.9% | 1,113,824 | $7.3M |
| First Eagle Investment Management, LLC | 0.02% | Add +10.2% | 1,104,225 | $7.2M |
| Deutsche Bank AG | 0.00% | Reduce -31.0% | 1,047,137 | $6.8M |
| Bank of New York Mellon Corp | 0.00% | Add +0.6% | 1,043,378 | $6.8M |
| Hodges Capital Management Inc. | 0.45% | Add +20.6% | 1,041,000 | $6.8M |
| Two Sigma Investments, LP | 0.01% | Reduce -22.8% | 917,594 | $6.0M |
| Parkman Healthcare Partners LLC | 0.78% | Add +3.1% | 876,268 | $5.7M |
| Trexquant Investment LP | 0.08% | Add +542.1% | 831,416 | $5.4M |
| Principal Financial Group Inc. | 0.00% | Reduce -1.2% | 795,325 | $5.2M |
| New York State Common Retirement Fund | 0.01% | Reduce -2.1% | 791,705 | $5.2M |
| Emerald Advisers, LLC | 0.21% | Reduce -4.4% | 786,337 | $5.1M |
| Bank of America Corp. | 0.00% | Reduce -21.4% | 712,387 | $4.6M |
| AQR Capital Management | 0.01% | Add +45.7% | 684,578 | $4.5M |
| Emerald Mutual Fund Advisers Trust | 0.22% | No change | 644,153 | $4.2M |
| Ameriprise Financial Inc. | 0.00% | Add +4.2% | 638,327 | $4.2M |
| Royce & Associates LP | 0.04% | Add +1.3% | 598,581 | $3.9M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -28.7% | 554,695 | $3.6M |
| Nuveen Asset Management, LLC | 0.00% | Reduce -75.1% | 459,441 | $3.0M |
| Redwood Investment Management, LLC | 0.25% | Add +29.8% | 475,777 | $2.9M |
| Citadel Advisors | 0.00% | Reduce -50.9% | 409,533 | $2.7M |
| Legal & General Group Plc | 0.00% | Add +3.2% | 409,271 | $2.7M |
| D. E. Shaw & Co. | 0.00% | Add +33.4% | 384,949 | $2.5M |
| Rafferty Asset Management, LLC | 0.01% | Reduce -62.2% | 384,352 | $2.5M |
| Knott David M Jr | 0.96% | Add +34.1% | 370,000 | $2.4M |
| Rhumbline Advisers | 0.00% | Add +0.7% | 365,701 | $2.4M |
| Schonfeld Strategic Advisors LLC | 0.02% | Reduce -73.5% | 347,040 | $2.3M |
| OMERS ADMINISTRATION Corp | 0.02% | New | 333,210 | $2.2M |
| Franklin Resources Inc. | 0.00% | Add +2.8% | 320,175 | $2.1M |
| Bridgeway Capital Management, LLC | 0.05% | Reduce -5.1% | 311,200 | $2.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +105.1% | 308,690 | $2.0M |
| Public Sector Pension Investment Board | 0.01% | Add +9.3% | 307,786 | $2.0M |
| Capital Fund Management S.A. | 0.02% | New | 305,621 | $2.0M |
| Swiss National Bank | 0.00% | No change | 276,700 | $1.8M |
| Foundry Partners, LLC | 0.09% | Add +5.7% | 254,177 | $1.7M |
| Victory Capital Management Inc. | 0.00% | Add +74.3% | 222,573 | $1.5M |
| Marshall Wace, LLP | 0.00% | Reduce -62.1% | 217,218 | $1.4M |
| Dimensional Fund Advisors LP | 0.00% | Add +48.6% | 213,619 | $1.4M |
| Alberta Investment Management Corp | 0.02% | No change | 210,731 | $1.4M |
| Barclays PLC | 0.00% | Reduce -32.1% | 197,016 | $1.3M |
| Y-Intercept (Hong Kong) Ltd | 0.07% | Add +41.1% | 189,962 | $1.2M |
| Citigroup Inc. | 0.00% | Reduce -80.5% | 184,668 | $1.2M |
| CANADA LIFE ASSURANCE Co | 0.00% | Add +18.4% | 180,563 | $1.2M |
| State of Wisconsin Investment Board | 0.00% | Add +43.1% | 175,564 | $1.1M |
| Macquarie Group Ltd. | 0.00% | No change | 167,200 | $1.1M |
| Hillsdale Investment Management Inc. | 0.08% | Reduce -3.7% | 164,800 | $1.1M |
| Alliancebernstein L.P. | 0.00% | No change | 163,070 | $1.1M |
| Jane Street Group, LLC | 0.00% | Add +136.6% | 159,632 | $1.0M |
| Prudential Financial Inc. | 0.00% | Reduce -1.6% | 153,938 | $1.0M |
| California State Teachers Retirement System | 0.00% | Reduce -3.0% | 137,740 | $898K |
| FMR LLC | 0.00% | Add +51.7% | 135,592 | $884K |
| Hennion & Walsh Asset Management, Inc. | 0.04% | Add +1058.9% | 129,649 | $845K |
| Alps Advisors Inc. | 0.01% | Add +12.3% | 123,975 | $808K |
| Gsa Capital Partners LLP | 0.05% | Reduce -32.4% | 119,106 | $777K |
| Advantage Alpha Capital Partners LP | 0.17% | Reduce -9.5% | 118,514 | $773K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -2.6% | 116,123 | $757K |
| Vestcor Inc | 0.03% | Add +895.6% | 115,763 | $755K |
| Harbor Capital Advisors, Inc. | 0.06% | Add +100.5% | 111,974 | $730K |
| Artal Group S.A. | 0.02% | No change | 110,532 | $721K |
| Wellington Management Group LLP | 0.00% | Add +15.1% | 109,495 | $714K |
| Public Employees Retirement System of Ohio | 0.00% | Reduce -0.5% | 109,036 | $711K |
| Squarepoint Ops LLC | 0.00% | Reduce -62.9% | 105,566 | $688K |
| Kennedy Capital Management LLC | 0.01% | Reduce -10.9% | 103,816 | $677K |
| Massachusetts Financial Services Co. | 0.00% | Add +3.5% | 101,879 | $664K |
| T. Rowe Price Associates Inc. | 0.00% | Add +18.6% | 101,448 | $662K |
| Bank of Montreal | 0.00% | Add +563.8% | 94,564 | $618K |
| Clearline Capital LP | 0.05% | No change | 92,870 | $606K |
| Guggenheim Capital LLC | 0.00% | Add +16.5% | 89,944 | $586K |
| Ensign Peak Advisors, Inc | 0.00% | No change | 85,392 | $557K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | — | 84,431 | $546K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -1.9% | 82,128 | $535K |
| Corebridge Financial, Inc. | 0.00% | — | 81,998 | $535K |
| BNP Paribas Financial Markets | 0.00% | Reduce -86.6% | 81,845 | $534K |
| STRS Ohio | 0.00% | Add +4.3% | 81,000 | $528K |
| MetLife Investment Management, LLC | 0.00% | Add +12.8% | 80,696 | $526K |
"% of holder's portfolio" is IRWD's weight in each manager's 13F, not the share of Ironwood Pharmaceuticals Inc. the manager owns.