Institutional shares held 167 Million
517K calls
1.61M puts
Total value of holdings $1.06B
$3.3M calls
$10.2M puts
Market Cap $985M
154,636,000 Shares Out.
Institutional ownership 108.0%
# of Institutions 222


Latest Institutional Activity in ARDX

Top Purchases

Q2 2025
Millennium Management LLC Shares Held: 11.7M ($74.3M)
Q2 2025
Marshall Wace, LLP Shares Held: 11.3M ($71.7M)
Q2 2025
Bank Of America Corp Shares Held: 5.53M ($35.2M)
Q2 2025
Goldman Sachs Group Inc Shares Held: 4M ($25.5M)
Q2 2025
Vanguard Group Inc Shares Held: 16M ($102M)

Top Sells

Q2 2025
Janus Henderson Group PLC Shares Held: 15.1M ($95.9M)
Q2 2025
Jane Street Group, LLC Shares Held: 768K ($4.89M)
Q2 2025
Citadel Advisors LLC Shares Held: 2.21M ($14.1M)
Q2 2025
Oracle Investment Management Inc Shares Held: 1.43M ($9.11M)
Q2 2025
Trexquant Investment LP Shares Held: 776K ($4.94M)

About ARDX

Ardelyx, Inc., a biopharmaceutical company, discovers, develops, and commercializes medicines to treat gastrointestinal and cardiorenal therapeutic areas in the United States and internationally. The company's lead product candidate is tenapanor, which has completed Phase III clinical trial for the treatment of patients with irritable bowel syndrome with constipation, as well as in Phase III clinical trial to control serum phosphorus in adult patients with chronic kidney disease (CKD)on dialysis, or hyperphosphatemia. It is also developing RDX013, a potassium secretagogue, for the treatment of elevated serum potassium, or hyperkalemia, a problem among certain patients with kidney and/or heart disease; and RDX020, an early-stage program in metabolic acidosis, a serious electrolyte disorder in patients with CKD. The company has agreements with Kyowa Kirin in Japan, Fosun Pharmaceutical Industrial Development Co. Ltd. in China, and Knight Therapeutics, Inc. in Canada for the development and commercialization of tenapanor in their respective territories. The company was formerly known as Nteryx, Inc. and changed its name to Ardelyx, Inc. in June 2008. Ardelyx, Inc. was incorporated in 2007 and is headquartered in Waltham, Massachusetts.


Insider Transactions at ARDX

Insider Transaction List

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Date Insider Transaction Ownership Type Shares Traded Value / Price
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Last 12 Months Summary

Buy / Acquisition
3.68M Shares
From 19 Insiders
Grant, award, or other acquisition 1.6M shares
Exercise of conversion of derivative security 494K shares
Open market or private purchase 1.59M shares
Sell / Disposition
791K Shares
From 8 Insiders
Open market or private sale 791K shares

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