Rock Springs Capital Management’s Ardelyx ARDX Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$11.4M Sell
2,241,769
-57,704
-3% -$352K 0.56% 51
2026
Q1
$13.8M Hold
2,299,473
0.81% 41
2025
Q4
$13.4M Buy
2,299,473
+13,200
+0.6% +$73.5K 0.69% 44
2025
Q3
$12.6M Hold
2,286,273
0.74% 48
2025
Q2
$8.96M Buy
2,286,273
+681,298
+42% +$2.81M 0.56% 55
2025
Q1
$7.88M Buy
1,604,975
+141,346
+10% +$759K 0.45% 56
2024
Q4
$7.42M Buy
+1,463,629
New +$8.09M 0.28% 69
2021
Q3
Sell
-5,248,829
Closed -$39.8M 157
2021
Q2
$39.8M Buy
5,248,829
+72,268
+1% +$534K 0.79% 42
2021
Q1
$34.3M Buy
5,176,561
+28,449
+0.6% +$195K 0.75% 46
2020
Q4
$33.3M Buy
5,148,112
+71,245
+1% +$423K 0.71% 49
2020
Q3
$26.7M Buy
5,076,867
+61,758
+1% +$371K 0.68% 46
2020
Q2
$34.7M Buy
5,015,109
+165,109
+3% +$1.15M 0.95% 43
2020
Q1
$27.6M Hold
4,850,000
1.14% 35
2019
Q4
$36.4M Buy
4,850,000
+1,794,739
+59% +$10.9M 1.15% 25
2019
Q3
$14.4M Buy
3,055,261
+1,055,261
+53% +$3.67M 0.57% 58
2019
Q2
$5.38M Hold
2,000,000
0.19% 99
2019
Q1
$5.6M Hold
2,000,000
0.22% 106
2018
Q4
$3.58M Sell
2,000,000
-525,557
-21% -$1.55M 0.17% 110
2018
Q3
$11M Hold
2,525,557
0.4% 81
2018
Q2
$9.35M Buy
2,525,557
+250,000
+11% +$1.16M 0.36% 89
2018
Q1
$11.5M Hold
2,275,557
0.49% 72
2017
Q4
$15M Buy
2,275,557
+275,557
+14% +$1.63M 0.68% 53
2017
Q3
$11.2M Hold
2,000,000
0.52% 66
2017
Q2
$10.2M Hold
2,000,000
0.52% 61
2017
Q1
$25.3M Hold
2,000,000
1.46% 22
2016
Q4
$28.4M Buy
2,000,000
+25,000
+1% +$355K 1.9% 14
2016
Q3
$25.6M Buy
1,975,000
+700,000
+55% +$7.33M 1.6% 22
2016
Q2
$11.1M Buy
1,275,000
+214,600
+20% +$1.75M 0.82% 39
2016
Q1
$8.24M Buy
1,060,400
+377,900
+55% +$3.72M 0.69% 44
2015
Q4
$12.4M Buy
682,500
+1,000
+0.1% +$18.6K 0.94% 34
2015
Q3
$11.8M Buy
681,500
+71,500
+12% +$1.33M 0.96% 33
2015
Q2
$9.74M Buy
+610,000
New +$7.69M 0.71% 47

Other funds holding ARDX

Rock Springs Capital Management's ARDX Position: Q2 2026 in Review

Rock Springs Capital Management reduced its Ardelyx (ARDX) stake by 2.5% in Q2 2026, selling an estimated $352K and leaving 2,241,769 shares worth $11.4M. The position accounts for 0.56% of the portfolio, ranked #51.

Rock Springs Capital Management first reported a position in ARDX in Q2 2015 and has held it in 32 quarters since. The position peaked at $39.8M in Q2 2021. 249 funds tracked by Wall St. Rank hold ARDX as of Q2 2026.

  • Rock Springs Capital Management held 2,241,769 shares of Ardelyx worth $11.4M as of Q2 2026.
  • Rock Springs Capital Management sold 57,704 Ardelyx shares in Q2 2026, an estimated $352K.
  • Ardelyx made up 0.56% of Rock Springs Capital Management's portfolio in Q2 2026, its #51 holding.
  • Rock Springs Capital Management first reported a position in Ardelyx in Q2 2015 and has held it in 32 quarters since.
  • Rock Springs Capital Management's Ardelyx position peaked at $39.8M in Q2 2021.
  • 249 funds tracked by Wall St. Rank held Ardelyx as of Q2 2026.

Based on Rock Springs Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.