Capstone Investment Advisors
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Capstone Investment Advisors’s Ardelyx ARDX Stock Holding History

Capstone Investment Advisors’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
2025
Q4 		– Sell
-115,814
Closed -$638K – 1580
2025
Q3 		$638K Buy
+115,814
New +$629K ﹤0.01% 1233
2023
Q4 		– Sell
-18,715
Closed -$76.4K – 2098
2023
Q3 		$76.4K Buy
+18,715
New +$73K ﹤0.01% 1981

Other funds holding ARDX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
NAMI
Nomura Asset Management International Philadelphia, Pennsylvania $66.6B AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $419B AUM 43.02% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Capstone Investment Advisors's ARDX Position: Q4 2025 in Review

Capstone Investment Advisors sold out of Ardelyx (ARDX) in Q4 2025, closing a stake of 115,814 shares — an estimated $638K sold.

Capstone Investment Advisors first reported a position in ARDX in Q3 2023 and held it in 2 quarters. The position peaked at $638K in Q3 2025. 229 funds tracked by Wall St. Rank hold ARDX as of Q4 2025.

  • Capstone Investment Advisors reported no remaining Ardelyx position as of Q4 2025 after selling out during the quarter.
  • Capstone Investment Advisors sold 115,814 Ardelyx shares in Q4 2025, an estimated $638K.
  • Capstone Investment Advisors first reported a position in Ardelyx in Q3 2023 and held it in 2 quarters.
  • Capstone Investment Advisors's Ardelyx position peaked at $638K in Q3 2025.
  • 229 funds tracked by Wall St. Rank held Ardelyx as of Q4 2025.

Based on Capstone Investment Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.