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Ironwood Pharmaceuticals (IRWD) Institutional Ownership

Ironwood Pharmaceuticals logo
$4.25 +0.12 (+2.91%)
Closing price 08/31/2026 04:00 PM Eastern
Extended Trading
$4.24 -0.01 (-0.24%)
As of 04:43 AM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Ironwood Pharmaceuticals (NASDAQ:IRWD)

Number of
Institutional Buyers
(last 12 months)
96
Total
Institutional Inflows
(last 12 months)
$90.85M
Number of
Institutional Sellers
(last 12 months)
37
Total
Institutional Outflows
(last 12 months)
$26.79M
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IRWD Institutional Buying and Selling by Quarter

Ironwood Pharmaceuticals Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/21/2026 AXQ Capital LP47,028$198K0.0%+263.2%0.028%
8/19/2026 Wellington Management Group LLP468,821$1.97M0.0%+3.4%0.284%
8/18/2026 Public Employees Retirement System of Ohio59,925$252K0.0%N/A0.036%
8/13/2026 Globeflex Capital L P259,809$1.09M0.1%N/A0.159%
8/6/2026 Bank of New York Mellon Corp508,880$2.14M0.0%N/A0.312%
7/10/2026 Wedge Capital Management L L P NC435,650$1.83M0.0%-19.4%0.267%
6/18/2026 Pacer Advisors Inc.1,134,512$3.98M0.0%N/A0.696%
5/22/2026 Segall Bryant & Hamill LLC278,201$976K0.0%N/A0.171%
5/19/2026 Bank of America Corp DE8,682,907$30.48M0.0%-24.6%5.325%
5/19/2026 Bull Harbor Capital LLC13,721$48K0.0%N/A0.008%
5/18/2026 Amundi404,237$1.42M0.0%-37.1%0.248%
5/18/2026 EverSource Wealth Advisors LLC20,336$71K0.0%+48.7%0.012%
5/16/2026 The Manufacturers Life Insurance Company43,005$151K0.0%-9.6%0.026%
5/16/2026 Quantinno Capital Management LP129,703$455K0.0%+9.1%0.080%
5/16/2026 Lazard Asset Management LLC290,189$1.02M0.0%-71.0%0.178%
5/15/2026 OMERS ADMINISTRATION Corp226,310$794K0.0%+5.2%0.139%
5/14/2026 Renaissance Technologies LLC8,061,073$28.29M0.0%-1.8%4.944%
5/14/2026 Arrowstreet Capital Limited Partnership3,397,242$11.92M0.0%+724.5%2.083%
5/14/2026 Sei Investments Co.742,548$2.61M0.0%+10.2%0.455%
5/14/2026 Globeflex Capital L P259,809$912K0.1%N/A0.159%
5/14/2026 State of Wyoming128,175$450K0.1%-18.5%0.079%
5/7/2026 Dimensional Fund Advisors LP2,082,055$7.31M0.0%+529.3%1.277%
5/6/2026 Allspring Global Investments Holdings LLC79,193$278K0.0%N/A0.049%
5/5/2026 Bank of New York Mellon Corp484,036$1.70M0.0%-5.1%0.297%
5/5/2026 Hillsdale Investment Management Inc.1,236,628$4.34M0.1%+6.9%0.758%
5/4/2026 Principal Financial Group Inc.11,375$40K0.0%N/A0.007%
5/4/2026 Chicago Partners Investment Group LLC18,483$65K0.0%N/A0.011%
5/1/2026 Fifth Third Bancorp165,094$579K0.0%N/A0.101%
4/30/2026 Hsbc Holdings PLC29,706$104K0.0%+26.8%0.018%
4/30/2026 Range Financial Group LLC433,256$1.52M0.5%+1.7%0.266%
4/28/2026 Abel Hall LLC12,908$45K0.0%-22.5%0.008%
4/28/2026DGS Capital Management LLC14,883$52K0.0%+42.8%0.009%
4/27/2026 Y Intercept Hong Kong Ltd13,470$47K0.0%N/A0.008%
4/25/2026 Strs Ohio97,400$342K0.0%+27.2%0.060%
4/23/2026 Inspire Investing LLC509,941$1.79M0.1%N/A0.313%
4/20/2026 Ritholtz Wealth Management87,535$307K0.0%N/A0.054%
4/17/2026 Krilogy Financial LLC33,194$117K0.0%+9.8%0.020%
4/16/2026 SG Americas Securities LLC113,630$399K0.0%+96.8%0.070%
3/20/2026 Hsbc Holdings PLC23,436$79K0.0%N/A0.014%
2/24/2026DGS Capital Management LLC10,425$35K0.0%N/A0.006%
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2/19/2026 Invesco Ltd.449,219$1.51M0.0%+22.6%0.276%
2/18/2026 Mercer Global Advisors Inc. ADV76,951$259K0.0%+7.8%0.047%
2/18/2026 XTX Topco Ltd43,904$148K0.0%+290.4%0.027%
2/18/2026 Virtus Investment Advisers LLC74,311$250K0.1%N/A0.046%
2/18/2026 Wellington Management Group LLP503,942$1.70M0.0%N/A0.310%
2/18/2026 Polymer Capital Management US LLC48,747$164K0.0%N/A0.030%
2/18/2026 Millennium Management LLC560,713$1.89M0.0%+124.2%0.345%
2/18/2026 Man Group plc47,659$161K0.0%N/A0.029%
2/18/2026 Evolve Private Wealth LLC14,809$50K0.0%N/A0.009%
2/18/2026 Engineers Gate Manager LP38,701$130K0.0%-62.1%0.024%
2/18/2026 Balyasny Asset Management L.P.65,156$220K0.0%N/A0.040%
2/18/2026 Bridgeway Capital Management LLC495,993$1.67M0.0%+230.7%0.305%
2/18/2026 Armistice Capital LLC16,025,000$54.00M0.6%-0.8%9.851%
2/17/2026 AQR Capital Management LLC4,723,531$15.92M0.0%-12.2%2.904%
2/17/2026 Abel Hall LLC16,661$56K0.0%N/A0.010%
2/17/2026 Lazard Asset Management LLC1,000,445$3.37M0.0%N/A0.615%
2/17/2026 Jain Global LLC30,009$101K0.0%N/A0.018%
2/17/2026 Amundi642,830$2.17M0.0%N/A0.395%
2/17/2026 Jump Financial LLC10,062$34K0.0%N/A0.006%
2/17/2026 Price T Rowe Associates Inc. MD99,363$335K0.0%+23.9%0.061%
2/17/2026 Public Employees Retirement System of Ohio67,888$229K0.0%+11.7%0.042%
2/17/2026 Diadema Partners LP683,611$2.30M0.4%N/A0.420%
2/17/2026 Russell Investments Group Ltd.265,357$894K0.0%-18.7%0.163%
2/17/2026 State of Wisconsin Investment Board180,040$607K0.0%N/A0.111%
2/17/2026 Persistent Asset Partners Ltd182,046$613K0.3%N/A0.112%
2/16/2026 Squarepoint Ops LLC88,880$300K0.0%+338.5%0.055%
2/16/2026 Panagora Asset Management Inc.54,408$183K0.0%-65.8%0.033%
2/16/2026 Mariner LLC114,119$384K0.0%+12.6%0.070%
2/16/2026 Barclays PLC392,904$1.32M0.0%-22.1%0.242%
2/13/2026 Marshall Wace LLP4,424,002$14.91M0.0%+40.7%2.719%
2/13/2026 The Manufacturers Life Insurance Company 47,588$160K0.0%-11.8%0.029%
2/13/2026 Walleye Capital LLC527,936$1.78M0.0%N/A0.325%
2/13/2026 Virtus Advisers LLC58,000$195K0.1%N/A0.036%
2/13/2026 Exome Asset Management LLC648,532$2.19M1.0%N/A0.399%
2/13/2026 Jacobs Levy Equity Management Inc.2,759,667$9.30M0.0%+43.7%1.696%
2/13/2026 Rafferty Asset Management LLC64,841$219K0.0%N/A0.040%
2/13/2026 Integrated Wealth Concepts LLC11,436$39K0.0%-40.7%0.007%
2/13/2026 Charles Schwab Investment Management Inc.4,975,939$16.77M0.0%+1.2%3.059%
2/13/2026 State Street Corp4,411,222$14.87M0.0%+39.8%2.712%
2/13/2026 Ieq Capital LLC633,260$2.13M0.0%-4.3%0.389%
2/12/2026 MetLife Investment Management LLC87,521$295K0.0%+50.9%0.054%
2/12/2026Cibc World Markets Corp10,585$36K0.0%N/A0.007%
2/12/2026 Commonwealth Equity Services LLC26,478$89K0.0%N/A0.016%
2/12/2026 Renaissance Technologies LLC8,204,973$27.65M0.0%-1.8%5.044%
2/12/2026 Dimensional Fund Advisors LP330,836$1.12M0.0%+266.1%0.203%
2/12/2026 EntryPoint Capital LLC66,625$225K0.1%N/A0.041%
2/12/2026 Integrated Quantitative Investments LLC102,654$346K0.1%N/A0.063%
2/12/2026 Federated Hermes Inc.3,318,137$11.18M0.0%+53.8%2.040%
2/12/2026 Wedbush Securities Inc.63,733$215K0.0%N/A0.039%
2/12/2026 Nuveen LLC139,487$470K0.0%N/A0.086%
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2/12/2026 SmartHarvest Portfolios LLC75,585$255K0.1%N/A0.046%
2/11/2026 Deutsche Bank AG1,109,924$3.74M0.0%-27.3%0.682%
2/11/2026 Focus Partners Advisor Solutions LLC59,617$201K0.0%+14.0%0.037%
2/11/2026 Franklin Resources Inc.385,583$1.30M0.0%+1,558.4%0.237%
2/11/2026 O Shaughnessy Asset Management LLC290,278$978K0.0%N/A0.178%
2/11/2026 Los Angeles Capital Management LLC634,331$2.14M0.0%-43.9%0.390%
2/11/2026 WINTON GROUP Ltd164,335$554K0.0%N/A0.101%
2/11/2026 State of Wyoming157,325$530K0.1%-56.6%0.097%
2/10/2026 Cibc World Market Inc.71,331$240K0.0%N/A0.044%
2/10/2026 Goldman Sachs Group Inc.1,275,315$4.30M0.0%+17.6%0.784%


IRWD Institutional Ownership - Frequently Asked Questions

During the previous two years, 203 institutional investors and hedge funds held shares of Ironwood Pharmaceuticals. The most heavily invested institutionals were Armistice Capital LLC ($54.00M), Vanguard Group Inc. ($53.78M), Bank of America Corp DE ($30.48M), Renaissance Technologies LLC ($28.29M), Charles Schwab Investment Management Inc. ($16.77M), AQR Capital Management LLC ($15.92M), and Marshall Wace LLP ($14.91M).Learn more on Ironwood Pharmaceuticals' institutional investors.

Of the 167 institutional investors that purchased Ironwood Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Bank of America Corp DE ($10.53M), Armistice Capital LLC ($6.68M), AQR Capital Management LLC ($5.77M), Acadian Asset Management LLC ($5.54M), Marshall Wace LLP ($4.72M), Millennium Management LLC ($4.60M), and Pacer Advisors Inc. ($3.96M).

Institutional investors have bought a total of 32,351,395 shares in the last 24 months. This purchase volume represents approximately $90.85M in transactions.

Of the 37 institutional investors that sold Ironwood Pharmaceuticals' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Bank of America Corp DE ($2.84M), Lazard Asset Management LLC ($710.26K), AQR Capital Management LLC ($655.00K), Qube Research & Technologies Ltd ($544.09K), Los Angeles Capital Management LLC ($495.72K), Universal Beteiligungs und Servicegesellschaft mbH ($447.76K), and Deutsche Bank AG ($417.31K).

Institutional investors have sold a total of 9,224,817 shares in the last 24 months. This volume of shares sold represents approximately $26.79M in transactions.


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Institutional ownership data for NASDAQ:IRWD is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/21/2026. New 13F filings are added each quarter as they're published.
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