Ardelyx
ARDX
229 hedge funds and large institutions have $973M invested in Ardelyx in 2025 Q4 according to their latest regulatory filings, with 37 funds opening new positions, 79 increasing their positions, 84 reducing their positions, and 26 closing their positions.
42% more first-time investments, than exits
New positions opened: 37 | Existing positions closed: 26
27% more call options, than puts
Call options by funds: $9.91M | Put options by funds: $7.78M
3% more funds holding
Funds holding: 223 → 229 (+6)
1.23% more ownership
Funds ownership: 67.44% → 68.67% (+1.2%)
1% more capital invested
Capital invested by funds: $962M → $973M (+$10.6M)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
6% less repeat investments, than reductions
Existing positions increased: 79 | Existing positions reduced: 84
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$23.8M |
| 2 |
State Street
Boston,
Massachusetts
|
+$12.2M |
| 3 |
JGC
J. Goldman & Co
New York
|
+$8.53M |
| 4 |
Qube Research & Technologies (QRT)
London,
United Kingdom
|
+$6.11M |
| 5 |
Point72 Asset Management
Stamford,
Connecticut
|
+$5.34M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Macquarie Group
Sydney, NSW 2000,
Australia
|
-$57.6M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$20.9M |
| 3 |
D.E. Shaw & Co
New York
|
-$10.6M |
| 4 |
Walleye Capital
New York
|
-$5.51M |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$5.05M |
ARDX Hedge Fund Activity: Q4 2025 in Review
229 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Ardelyx (ARDX) for Q4 2025, worth a combined $973M — up 1.1% from $962M a quarter earlier.
Buyers outnumbered sellers: 37 funds opened new ARDX positions and 26 closed out — a net gain of 11 holders — while 79 added to existing stakes and 84 trimmed.
The largest buyer was Millennium Management, adding an estimated $23.8M. The largest seller was Macquarie Group, exiting entirely with an estimated $57.6M sold.
- 229 institutional investors held Ardelyx (ARDX) as of Q4 2025, up from 223 in Q3 2025.
- Funds reported $973M of Ardelyx stock for Q4 2025, up 1.1% quarter-over-quarter.
- 37 funds opened new Ardelyx positions in Q4 2025 and 26 closed out, a net change of +11 holders.
- The largest Ardelyx buyer in Q4 2025 was Millennium Management, an estimated $23.8M added.
- The largest Ardelyx seller in Q4 2025 was Macquarie Group, an estimated $57.6M sold.
Based on aggregated 13F filings for Q4 2025.