Citadel Advisors
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Citadel Advisors’s Ardelyx ARDX Stock Holding History

Citadel 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
2026
Q2 		$443K Sell
86,800
-40,200
-32% -$245K ﹤0.01% 10175
2026
Q1 		$761K Sell
127,000
-93,100
-42% -$616K ﹤0.01% 8322
2025
Q4 		$1.28M Buy
220,100
+34,100
+18% +$190K ﹤0.01% 6861
2025
Q3 		$1.02M Sell
186,000
-4,400
-2% -$23.9K ﹤0.01% 7495
2025
Q2 		$746K Buy
190,400
+27,000
+17% +$111K ﹤0.01% 7716
2025
Q1 		$802K Sell
163,400
-63,500
-28% -$341K ﹤0.01% 7437
2024
Q4 		$1.15M Sell
226,900
-113,900
-33% -$629K ﹤0.01% 6736
2024
Q3 		$2.35M Buy
340,800
+147,200
+76% +$869K ﹤0.01% 5228
2024
Q2 		$1.43M Sell
193,600
-64,800
-25% -$456K ﹤0.01% 5911
2024
Q1 		$1.89M Sell
258,400
-61,100
-19% -$523K ﹤0.01% 5640
2023
Q4 		$1.98M Buy
319,500
+202,100
+172% +$907K ﹤0.01% 5368
2023
Q3 		$479K Sell
117,400
-84,300
-42% -$329K ﹤0.01% 8149
2023
Q2 		$684K Sell
201,700
-72,700
-26% -$298K ﹤0.01% 7246
2023
Q1 		$1.31M Sell
274,400
-94,700
-26% -$319K ﹤0.01% 6202
2022
Q4 		$1.05M Buy
369,100
+112,000
+44% +$190K ﹤0.01% 6718
2022
Q3 		$306K Buy
257,100
+113,500
+79% +$108K ﹤0.01% 9533
2022
Q2 		$85K Buy
143,600
+17,100
+14% +$12.6K ﹤0.01% 11549
2022
Q1 		$135K Sell
126,500
-47,800
-27% -$42.7K ﹤0.01% 11964
2021
Q4 		$192K Buy
174,300
+153,000
+718% +$182K ﹤0.01% 11897
2021
Q3 		$28K Sell
21,300
-17,400
-45% -$46.5K ﹤0.01% 13587
2021
Q2 		$293K Sell
38,700
-18,500
-32% -$137K ﹤0.01% 11320
2021
Q1 		$379K Buy
57,200
+33,900
+145% +$233K ﹤0.01% 10309
2020
Q4 		$151K Buy
+23,300
New +$138K ﹤0.01% 9936
2019
Q4 		– Sell
-14,500
Closed -$68K – 9071
2019
Q3 		$68K Buy
+14,500
New +$50.4K ﹤0.01% 8621

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

Citadel Advisors's ARDX Position: Q2 2026 in Review

Citadel Advisors reduced its Ardelyx (ARDX) stake by 70% in Q2 2026, selling an estimated $14.9M and leaving 1,030,174 shares worth $5.25M. The position accounts for ﹤0.01% of the portfolio, ranked #4631.

Citadel Advisors first reported a position in ARDX in Q3 2016 and has held it in 36 quarters since. The position peaked at $20.8M in Q1 2026. 250 funds tracked by Wall St. Rank hold ARDX as of Q2 2026.

  • Citadel Advisors held 1,030,174 shares of Ardelyx worth $5.25M as of Q2 2026.
  • Citadel Advisors sold 2,434,600 Ardelyx shares in Q2 2026, an estimated $14.9M.
  • Ardelyx made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #4631 holding.
  • Citadel Advisors first reported a position in Ardelyx in Q3 2016 and has held it in 36 quarters since.
  • Citadel Advisors's Ardelyx position peaked at $20.8M in Q1 2026.
  • 250 funds tracked by Wall St. Rank held Ardelyx as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.