13F Insight
DOSSIER · 13F Holders · Q4 2025Cheap mega-capRe-rated

ARDELYX INC

5 institutions still hold ARDELYX INC as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 039697907·5 13F holders·last filed Dec 31, 2025
Market cap
—
▲ 4.5%
vs prior quarter
13F value held
$6M
51.0% inst. owned
of float
Holders
5
+81 QoQ
filers reporting
Activity
+13 / −24
+990 added · −903 reduced
this quarter
Concentration
60.92%
ORACLE INVESTMENT MANAGEMENT INC #1
top holder share
AI Holders Summary · Q4 2025

5 institutions reported ARDELYX INC in Q4 2025. ORACLE INVESTMENT MANAGEMENT INC leads at 60.9% of the visible book. +81 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
ORACLE INVESTMENT MANAGEMENT INC
CIK 0001012622
$3M600K2.08%Q4 202502
GROUP ONE TRADING LLC
CIK 0000932540
$1M247K0.00%Q1 202603
SIMPLEX TRADING, LLC
CIK 0001488542
$654,108109K0.00%Q1 202604
IMC-Chicago, LLC
CIK 0001452861· Market maker
$111,41419K0.00%Q1 202605
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025