Ardelyx
ARDX
242 hedge funds and large institutions have $1.01B invested in Ardelyx in 2026 Q1 according to their latest regulatory filings, with 50 funds opening new positions, 106 increasing their positions, 59 reducing their positions, and 32 closing their positions.
80% more repeat investments, than reductions
Existing positions increased: 106 | Existing positions reduced: 59
63% more call options, than puts
Call options by funds: $9.79M | Put options by funds: $6M
56% more first-time investments, than exits
New positions opened: 50 | Existing positions closed: 32
6% more funds holding
Funds holding: 229 → 242 (+13)
4% more capital invested
Capital invested by funds: $973M → $1.01B (+$41.5M)
0.48% more ownership
Funds ownership: 68.67% → 69.15% (+0.48%)
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$39.2M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$14.1M |
| 3 |
Point72 Asset Management
Stamford,
Connecticut
|
+$13.4M |
| 4 |
RCMNY
Rubric Capital Management (New York)
New York
|
+$12.3M |
| 5 |
State Street
Boston,
Massachusetts
|
+$11.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Janus Henderson Group
London,
|
-$40.6M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$23.7M |
| 3 |
Arrowstreet Capital
Boston,
Massachusetts
|
-$8.31M |
| 4 |
NAMI
Nomura Asset Management International
Philadelphia,
Pennsylvania
|
-$7.67M |
| 5 |
D.E. Shaw & Co
New York
|
-$7.26M |
ARDX Hedge Fund Activity: Q1 2026 in Review
242 of the 8,187 institutional investors tracked by Wall St. Rank reported a position in Ardelyx (ARDX) for Q1 2026, worth a combined $1.01B — up 4.3% from $973M a quarter earlier.
Buyers outnumbered sellers: 50 funds opened new ARDX positions and 32 closed out — a net gain of 18 holders — while 106 added to existing stakes and 59 trimmed.
The largest buyer was Millennium Management, adding an estimated $39.2M. The largest seller was Janus Henderson Group, cutting an estimated $40.6M.
- 242 institutional investors held Ardelyx (ARDX) as of Q1 2026, up from 229 in Q4 2025.
- Funds reported $1.01B of Ardelyx stock for Q1 2026, up 4.3% quarter-over-quarter.
- 50 funds opened new Ardelyx positions in Q1 2026 and 32 closed out, a net change of +18 holders.
- The largest Ardelyx buyer in Q1 2026 was Millennium Management, an estimated $39.2M added.
- The largest Ardelyx seller in Q1 2026 was Janus Henderson Group, an estimated $40.6M sold.
Based on aggregated 13F filings for Q1 2026.