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Ironwood Pharmaceuticals (IRWD) Institutional Ownership

Ironwood Pharmaceuticals logo
$4.32 +0.06 (+1.41%)
Closing price 08/7/2026 04:00 PM Eastern
Extended Trading
$4.26 -0.06 (-1.37%)
As of 08/7/2026 07:52 PM 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)
103
Total
Institutional Inflows
(last 12 months)
$99.77M
Number of
Institutional Sellers
(last 12 months)
41
Total
Institutional Outflows
(last 12 months)
$29.20M
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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
8/6/2026 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%
6/18/2026Pacer Advisors Inc.1,134,512$3.98M0.0%N/A0.696%
5/22/2026Segall Bryant & Hamill LLC278,201$976K0.0%N/A0.171%
5/19/2026Bank of America Corp DE8,682,907$30.48M0.0%-24.6%5.325%
5/19/2026Bull Harbor Capital LLC13,721$48K0.0%N/A0.008%
5/18/2026Amundi404,237$1.42M0.0%-37.1%0.248%
5/18/2026 EverSource Wealth Advisors LLC20,336$71K0.0%+48.7%0.012%
5/16/2026The Manufacturers Life Insurance Company 43,005$151K0.0%-9.6%0.026%
5/16/2026Quantinno Capital Management LP129,703$455K0.0%+9.1%0.080%
5/16/2026Lazard Asset Management LLC290,189$1.02M0.0%-71.0%0.178%
5/15/2026OMERS ADMINISTRATION Corp226,310$794K0.0%+5.2%0.139%
5/14/2026Renaissance Technologies LLC8,061,073$28.29M0.0%-1.8%4.944%
5/14/2026Arrowstreet Capital Limited Partnership3,397,242$11.92M0.0%+724.5%2.083%
5/14/2026Sei Investments Co.742,548$2.61M0.0%+10.2%0.455%
5/14/2026Globeflex Capital L P259,809$912K0.1%N/A0.159%
5/14/2026 State of Wyoming128,175$450K0.1%-18.5%0.079%
5/7/2026Dimensional Fund Advisors LP2,082,055$7.31M0.0%+529.3%1.277%
5/6/2026Allspring 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%
5/5/2026Hillsdale 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%
4/30/2026Hsbc 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%
4/23/2026Inspire Investing LLC509,941$1.79M0.1%N/A0.313%
4/20/2026Ritholtz 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%
3/20/2026Hsbc Holdings PLC23,436$79K0.0%N/A0.014%
2/24/2026DGS Capital Management LLC10,425$35K0.0%N/A0.006%
2/19/2026Invesco Ltd.449,219$1.51M0.0%+22.6%0.276%
2/18/2026Mercer Global Advisors Inc. ADV76,951$259K0.0%+7.8%0.047%
2/18/2026XTX Topco Ltd43,904$148K0.0%+290.4%0.027%
2/18/2026Virtus Investment Advisers LLC74,311$250K0.1%N/A0.046%
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2/18/2026Wellington Management Group LLP503,942$1.70M0.0%N/A0.310%
2/18/2026Polymer Capital Management US LLC48,747$164K0.0%N/A0.030%
2/18/2026Millennium Management LLC560,713$1.89M0.0%+124.2%0.345%
2/18/2026Man Group plc47,659$161K0.0%N/A0.029%
2/18/2026Evolve Private Wealth LLC14,809$50K0.0%N/A0.009%
2/18/2026Engineers Gate Manager LP38,701$130K0.0%-62.1%0.024%
2/18/2026Balyasny Asset Management L.P.65,156$220K0.0%N/A0.040%
2/18/2026Bridgeway Capital Management LLC495,993$1.67M0.0%+230.7%0.305%
2/18/2026Armistice Capital LLC16,025,000$54.00M0.6%-0.8%9.851%
2/17/2026AQR Capital Management LLC4,723,531$15.92M0.0%-12.2%2.904%
2/17/2026 Abel Hall LLC16,661$56K0.0%N/A0.010%
2/17/2026Lazard Asset Management LLC1,000,445$3.37M0.0%N/A0.615%
2/17/2026Jain Global LLC30,009$101K0.0%N/A0.018%
2/17/2026Amundi642,830$2.17M0.0%N/A0.395%
2/17/2026Jump Financial LLC10,062$34K0.0%N/A0.006%
2/17/2026Price T Rowe Associates Inc. MD99,363$335K0.0%+23.9%0.061%
2/17/2026Public Employees Retirement System of Ohio67,888$229K0.0%+11.7%0.042%
2/17/2026Diadema Partners LP683,611$2.30M0.4%N/A0.420%
2/17/2026 Russell Investments Group Ltd.265,357$894K0.0%-18.7%0.163%
2/17/2026State of Wisconsin Investment Board180,040$607K0.0%N/A0.111%
2/17/2026 Persistent Asset Partners Ltd182,046$613K0.3%N/A0.112%
2/16/2026Squarepoint Ops LLC88,880$300K0.0%+338.5%0.055%
2/16/2026 Panagora Asset Management Inc.54,408$183K0.0%-65.8%0.033%
2/16/2026Mariner LLC114,119$384K0.0%+12.6%0.070%
2/16/2026Barclays PLC392,904$1.32M0.0%-22.1%0.242%
2/13/2026Marshall Wace LLP4,424,002$14.91M0.0%+40.7%2.719%
2/13/2026The 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%
2/13/2026Virtus Advisers LLC58,000$195K0.1%N/A0.036%
2/13/2026Exome Asset Management LLC648,532$2.19M1.0%N/A0.399%
2/13/2026Jacobs Levy Equity Management Inc.2,759,667$9.30M0.0%+43.7%1.696%
2/13/2026Rafferty Asset Management LLC64,841$219K0.0%N/A0.040%
2/13/2026Integrated Wealth Concepts LLC11,436$39K0.0%-40.7%0.007%
2/13/2026Charles 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%
2/13/2026Ieq Capital LLC633,260$2.13M0.0%-4.3%0.389%
2/12/2026MetLife 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%
2/12/2026Renaissance Technologies LLC8,204,973$27.65M0.0%-1.8%5.044%
2/12/2026Dimensional Fund Advisors LP330,836$1.12M0.0%+266.1%0.203%
2/12/2026EntryPoint Capital LLC66,625$225K0.1%N/A0.041%
2/12/2026Integrated Quantitative Investments LLC102,654$346K0.1%N/A0.063%
2/12/2026Federated 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%
2/12/2026Nuveen LLC139,487$470K0.0%N/A0.086%
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%
2/11/2026Franklin Resources Inc.385,583$1.30M0.0%+1,558.4%0.237%
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2/11/2026O Shaughnessy Asset Management LLC290,278$978K0.0%N/A0.178%
2/11/2026Los 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%
2/10/2026Cibc World Market Inc.71,331$240K0.0%N/A0.044%
2/10/2026Goldman Sachs Group Inc.1,275,315$4.30M0.0%+17.6%0.784%
2/10/2026Hillsdale Investment Management Inc.1,156,378$3.90M0.1%N/A0.711%
2/9/2026Geode Capital Management LLC3,623,534$12.21M0.0%+0.2%2.227%
2/9/2026Optimist Retirement Group LLC59,912$202K0.1%N/A0.037%
2/9/2026 Simplify Asset Management Inc.10,946$37K0.0%N/A0.007%


IRWD Institutional Ownership - Frequently Asked Questions

During the previous two years, 205 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 171 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 ($9.08M), AQR Capital Management LLC ($5.98M), Pacer Advisors Inc. ($5.66M), Acadian Asset Management LLC ($5.54M), Marshall Wace LLP ($4.72M), and Millennium Management LLC ($4.60M).

Institutional investors have bought a total of 46,584,372 shares in the last 24 months. This purchase volume represents approximately $99.77M in transactions.

Of the 41 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), Jane Street Group LLC ($1.76M), LSV Asset Management ($1.25M), Lazard Asset Management LLC ($710.26K), AQR Capital Management LLC ($655.00K), Qube Research & Technologies Ltd ($544.09K), and Los Angeles Capital Management LLC ($495.72K).

Institutional investors have sold a total of 12,584,925 shares in the last 24 months. This volume of shares sold represents approximately $29.20M 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 8/6/2026. New 13F filings are added each quarter as they're published.
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