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I

Ironwood Pharmaceuticals IRWD · USD

Health Care · US listing · 🇺🇸 United States

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4.68

+6.61%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
BLACKROCK, INC.17.8m10.93%+4.4m30 Jun 2026
ARMISTICE CAPITAL, LLC13.9m8.56%−1.1m30 Jun 2026
SARISSA CAPITAL MANAGEMENT LP9.2m5.65%—30 Jun 2026
STATE STREET CORP8.8m5.42%+1.4m30 Jun 2026
BANK OF AMERICA CORP /DE/8.7m5.34%+89630 Jun 2026
RENAISSANCE TECHNOLOGIES LLC8m4.91%−67.8k30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC6.6m4.06%+511.1k30 Jun 2026
AQR CAPITAL MANAGEMENT LLC6.5m3.97%−1.1m30 Jun 2026
ACADIAN ASSET MANAGEMENT LLC5.9m3.60%−723.9k30 Jun 2026
VANGUARD PORTFOLIO MANAGEMENT LLC5.5m3.39%−1.2m30 Jun 2026
GEODE CAPITAL MANAGEMENT, LLC4.8m2.97%+288.1k30 Jun 2026
TWO SIGMA INVESTMENTS, LP4.6m2.80%−1.3m30 Jun 2026
MARSHALL WACE, LLP4.3m2.64%−235k30 Jun 2026
JACOBS LEVY EQUITY MANAGEMENT, INC4.1m2.50%+433.5k30 Jun 2026
GOLDMAN SACHS GROUP INC3.3m2.04%+623.2k30 Jun 2026

Insider trades

Purchases and sales by directors and officers, as filed with the regulator

DateWhoTypeSharesPriceValue
17 Mar 2026 ↗DENNER ALEXANDER JDirectorSale6.7m3.05$20.5m
24 Feb 2026 ↗Martini Gregory S.Chief Financial OfficerSale11.5k3.66$41,933
24 Feb 2026 ↗Silver RonaldPrincipal Accounting OfficerSale12.6k3.66$46,193
24 Feb 2026 ↗Gaskins Tammi LChief Commercial OfficerSale11.2k3.66$41,135
24 Feb 2026 ↗Shetzline MichaelSVP, CMO, Head-Res&DrugSale17k3.66$62,264
24 Feb 2026 ↗MCCOURT Thomas AChief Executive OfficerSale103.5k3.66$378,905
24 Feb 2026 ↗John MinardoChief Legal OfficerSale19.1k3.66$69,734
23 Feb 2026 ↗Silver RonaldPrincipal Accounting OfficerSale11.6k3.81$44,013
23 Feb 2026 ↗Shetzline MichaelSVP, CMO, Head-Res&DrugSale15.6k3.81$59,322
23 Feb 2026 ↗Gaskins Tammi LChief Commercial OfficerSale10.3k3.81$39,193
23 Feb 2026 ↗MCCOURT Thomas AChief Executive OfficerSale94.8k3.81$361,024
23 Feb 2026 ↗Martini Gregory S.Chief Financial OfficerSale10.5k3.81$39,955
23 Feb 2026 ↗John MinardoChief Legal OfficerSale17.4k3.81$66,443

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

15.9m

+2.0% on the period before. 8.0 days to cover.

Short volume

Share of the day's trading sold short, 4 Nov 2026

51.1%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 21 Sept 2026169,040 shares
  • 18 Sept 20263,363 shares
  • 4 Sept 2026211 shares
  • 24 Aug 202697 shares
  • 13 Aug 20261 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.