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Diadema Partners’s Ardelyx ARDX Stock Holding History

Diadema Partners’s Portfolio ARDX Stock Details ARDX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.55M Buy
+303,025
New +$1.85M 0.2% 87
2026
Q1 		– Sell
-252,198
Closed -$1.47M – 152
2025
Q4 		$1.47M Sell
252,198
-147,802
-37% -$823K 0.25% 80
2025
Q3 		$2.2M Buy
+400,000
New +$2.17M 0.56% 56

Other funds holding ARDX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Diadema Partners's ARDX Position: Q2 2026 in Review

Diadema Partners opened a new position in Ardelyx (ARDX) in Q2 2026: 303,025 shares worth $1.55M. The stake represents 0.2% of the portfolio and ranks #87 among its holdings. This is a return to the name: Diadema Partners previously reported a position in ARDX as recently as Q4 2025.

Diadema Partners first reported a position in ARDX in Q3 2025 and has held it in 3 quarters since. The position peaked at $2.2M in Q3 2025. 249 funds tracked by Wall St. Rank hold ARDX as of Q2 2026.

  • Diadema Partners held 303,025 shares of Ardelyx worth $1.55M as of Q2 2026.
  • Ardelyx was a new Diadema Partners position in Q2 2026.
  • Ardelyx made up 0.2% of Diadema Partners's portfolio in Q2 2026, its #87 holding.
  • Diadema Partners first reported a position in Ardelyx in Q3 2025 and has held it in 3 quarters since.
  • Diadema Partners's Ardelyx position peaked at $2.2M in Q3 2025.
  • 249 funds tracked by Wall St. Rank held Ardelyx as of Q2 2026.

Based on Diadema Partners's 13F filing for Q2 2026, filed 14 Aug 2026.