Institutional shares held 166 Million
490K calls
2.35M puts
Total value of holdings $768M
$2.27M calls
$10.9M puts
Market Cap $716M
154,636,000 Shares Out.
Institutional ownership 107.23%
# of Institutions 233


Latest Institutional Activity in ARDX

Top Purchases

Q2 2025
Harbor Capital Advisors, Inc. Shares Held: 233K ($1.08M)
Q2 2025
Wealth Enhancement Advisory Services, LLC Shares Held: 65K ($301K)
Q2 2025
Webster Bank, N. A. Shares Held: 2K ($9.26K)
Q1 2025
Marshall Wace, LLP Shares Held: 8.38M ($38.8M)
Q1 2025
Millennium Management LLC Shares Held: 6.47M ($29.9M)

Top Sells

Q2 2025
Pallas Capital Advisors LLC Shares Held: 27K ($125K)
Q2 2025
Clay Northam Wealth Management, LLC Shares Held: 342K ($1.58M)
Q2 2025
Palisades Investment Partners, LLC Shares Held: 521K ($2.41M)
Q2 2025
Parallel Advisors, LLC Shares Held: 835 ($3.87K)
Q2 2025
Gamma Investing LLC Shares Held: 142 ($657)

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
3.86M Shares
From 18 Insiders
Grant, award, or other acquisition 1.78M shares
Exercise of conversion of derivative security 494K shares
Open market or private purchase 1.59M shares
Sell / Disposition
780K Shares
From 9 Insiders
Open market or private sale 780K shares

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