Stock Ownership/ARDX

ARDELYX INC (ARDX): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in ARDX · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
14
13F filers
Aggregate Value
$139.2M
Across holders
Last Price
$3.27
2026-10-08
Sector
Health Care
GICS
Quarterly fund activity5 increased9 reduced7 exited
Full exits: Point72 Asset Management, L.P., Lighthouse Investment Partners, LLC, Schonfeld Strategic Advisors LLC, TUDOR INVESTMENT CORP ET AL, Gotham Asset Management, LLC, Man Group plc, Brevan Howard Capital Management LP
Institutional Holders of ARDX
↗
14 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund13.90M$70.9M50.9%0.0%Reduced$-20.1MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund5.21M$26.6M19.1%0.0%Added+$4.8MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund2.32M$11.8M8.5%0.0%Reduced+$11.3MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund2.09M$10.7M7.7%0.0%Reduced$-1.8MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund1.03M$5.3M3.8%0.0%Reduced+$3.5MQ2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund893K$4.6M3.3%0.0%Reduced$-1.9MQ2 2026
ExodusPoint Capital Management, LP
CIK 0001736225
Hedge Fund753K$3.8M2.8%0.0%Added—Q2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund715K$3.6M2.6%0.0%Added+$92KQ2 2026
Walleye Capital LLC
CIK 0001758720
Hedge Fund171K$872K0.6%0.0%Added—Q2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund77K$391K0.3%0.0%Reduced$-630KQ2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$70.9M· 50.9% of total· 0.0% port· 13.90M sh· $-20.1M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$26.6M· 19.1% of total· 0.0% port· 5.21M sh· +$4.8M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$11.8M· 8.5% of total· 0.0% port· 2.32M sh· +$11.3M QoQ· Q2 2026
Qube Research & Technologies LtdReduced
Hedge Fund
$10.7M· 7.7% of total· 0.0% port· 2.09M sh· $-1.8M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$5.3M· 3.8% of total· 0.0% port· 1.03M sh· +$3.5M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCReduced
Hedge Fund
$4.6M· 3.3% of total· 0.0% port· 893K sh· $-1.9M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$3.8M· 2.8% of total· 0.0% port· 753K sh· — QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$3.6M· 2.6% of total· 0.0% port· 715K sh· +$92K QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$872K· 0.6% of total· 0.0% port· 171K sh· — QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCReduced
Hedge Fund
$391K· 0.3% of total· 0.0% port· 77K sh· $-630K QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$294K· 0.2% of total· 0.0% port· 58K sh· +$1K QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$288K· 0.2% of total· 0.0% port· 56K sh· $-15.7M QoQ· Q2 2026
Magnetar Financial LLCReduced
Hedge Fund
$93K· 0.1% of total· 0.0% port· 18K sh· +$12K QoQ· Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$67K· 0.0% of total· 0.0% port· 13K sh· $-1.5M QoQ· Q2 2026
1–10 of 14
1 / 2
Loading recent insider activity…
← Stock ownership