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Ardelyx
ARDX

221 hedge funds and large institutions have $809M invested in Ardelyx in 2025 Q1 according to their latest regulatory filings, with 42 funds opening new positions, 90 increasing their positions, 55 reducing their positions, and 32 closing their positions.

New
Increased
Maintained
Reduced
Closed

64% more repeat investments, than reductions

Existing positions increased: 90 | Existing positions reduced: 55

31% more first-time investments, than exits

New positions opened: 42 | Existing positions closed: 32

6% more capital invested

Capital invested by funds: $765M → $809M (+$43.4M)

5.34% more ownership

Funds ownership: 63.73% → 69.07% (+5.3%)

4% more funds holding

Funds holding: 213 → 221 (+8)

14% less call options, than puts

Call options by funds: $11.5M | Put options by funds: $13.3M

33% less funds holding in top 10

Funds holding in top 10: 3 → 2 (-1)

Holders
221
Holders Change
+8
Holders Change %
+3.76%
% of All Funds
2.96%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
42
Increased
90
Reduced
55
Closed
32
Calls
$11.5M
Puts
$13.3M
Net Calls
-$1.83M
Net Calls Change
+$2.5M

Top Buyers

1
Marshall Wace
Marshall Wace
United Kingdom
+$44.4M
2
Millennium Management
Millennium Management
New York
+$18.8M
3
Renaissance Technologies
Renaissance Technologies
New York
+$7.26M
4
N
Nuveen
North Carolina
+$6.64M
5
Jane Street
Jane Street
New York
+$6.54M

Top Sellers

1
EAM
Eventide Asset Management
Massachusetts
-$28.4M
2
RCMNY
Rubric Capital Management (New York)
New York
-$8.65M
3
RG
Redmile Group
California
-$7.99M
4
State Street
State Street
Massachusetts
-$7.61M
5
Point72 Asset Management
Point72 Asset Management
Connecticut
-$6.76M
Name Holding Trade Value Shares
Change 		Change in
Stake
TRCT
176
Tower Research Capital (TRC)
New York
$55.3K -$210K -39,064 -78%
TC
177
TownSquare Capital
Utah
$55.2K +$60.3K +11,237 New
RCAG
178
Rehmann Capital Advisory Group
Michigan
$49.1K – – –
WJA
179
Willis Johnson & Associates
Texas
$49.1K – – –
CWP
180
Cyndeo Wealth Partners
Florida
$49.1K +$53.7K +10,000 New
SPIA
181
Steward Partners Investment Advisory
New York
$47.8K – – –
AB
182
Amalgamated Bank
New York
$40K +$150 +28 +0.3%
SS
183
SBI Securities
Japan
$39.4K -$5 -1 -0%
Mirae Asset Global Investments
184
Mirae Asset Global Investments
South Korea
$39.3K +$446 +83 +1%
NFSG
185
Newbridge Financial Services Group
Florida
$34.4K – – –
C
186
Covestor
United Kingdom
$30K -$27.4K -5,111 -45%
GFM
187
GF Fund Management
China
$29.8K +$5.86K +1,091 +22%
HWM
188
HighMark Wealth Management
Minnesota
$24.5K – – –
Nisa Investment Advisors
189
Nisa Investment Advisors
Missouri
$19K +$5.66K +1,054 +38%
TC
190
Truvestments Capital
Florida
$14.2K -$1.48K -276 -9%
Royal Bank of Canada
191
Royal Bank of Canada
Ontario, Canada
$14K -$17.7K -3,305 -54%
PA
192
Parallel Advisors
California
$9.82K – – –
TWD
193
True Wealth Design
Ohio
$9.11K +$9.68K +1,803 +3,467%
WB
194
Webster Bank
Connecticut
$7.86K – – –
BIG
195
Brooklyn Investment Group
New York
$6.88K +$7.52K +1,401 New
ACM
196
Aster Capital Management
United Arab Emirates
$5.97K +$2.34K +436 +64%
Optiver Holding
197
Optiver Holding
Netherlands
$5.92K +$4.75K +885 +276%
GI
198
GAMMA Investing
California
$5.91K +$4.26K +794 +194%
CCM
199
Coldstream Capital Management
Washington
$5.46K +$5.98K +1,113 New
Comerica Bank
200
Comerica Bank
Texas
$5.09K +$628 +117 +13%
6 7
8
9 10

ARDX Hedge Fund Activity: Q1 2025 in Review

221 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Ardelyx (ARDX) for Q1 2025, worth a combined $809M — up 5.7% from $765M a quarter earlier.

Buyers outnumbered sellers: 42 funds opened new ARDX positions and 32 closed out — a net gain of 10 holders — while 90 added to existing stakes and 55 trimmed.

The largest buyer was Marshall Wace, adding an estimated $44.4M. The largest seller was Eventide Asset Management, exiting entirely with an estimated $28.4M sold.

  • 221 institutional investors held Ardelyx (ARDX) as of Q1 2025, up from 213 in Q4 2024.
  • Funds reported $809M of Ardelyx stock for Q1 2025, up 5.7% quarter-over-quarter.
  • 42 funds opened new Ardelyx positions in Q1 2025 and 32 closed out, a net change of +10 holders.
  • The largest Ardelyx buyer in Q1 2025 was Marshall Wace, an estimated $44.4M added.
  • The largest Ardelyx seller in Q1 2025 was Eventide Asset Management, an estimated $28.4M sold.

Based on aggregated 13F filings for Q1 2025.