SEC 13F Intelligence

Rock Springs Capital Management LP / ARDX

Rock Springs Capital Management LP’s Ardelyx Inc Position

Does Rock Springs Capital Management LP own Ardelyx Inc (ARDX)? Yes — 2.30M shares worth $14M (+0.81% of its 13F portfolio) as of Q1 2026.

Position Value
$14M
Q1 2026
Shares
2.30M
% of Portfolio
+0.81%
Quarters Held
17
currently held

Position History ARDX

Reported value by quarter
Q4 ’18: $4MQ4 ’18Q1 ’19: $6MQ2 ’19: $5MQ3 ’19: $14MQ3 ’19Q4 ’19: $36MQ1 ’20: $28MQ2 ’20: $35MQ2 ’20Q3 ’20: $27MQ4 ’20: $33MQ1 ’21: $34MQ1 ’21Q2 ’21: $40MQ4 ’24: $7MQ1 ’25: $8MQ1 ’25Q2 ’25: $9MQ3 ’25: $13MQ4 ’25: $13MQ4 ’25Q1 ’26: $14Mfilingsflow.com
QuarterSharesValue% of Portfolio
Q1 20262.30M$14M+0.81%
Q4 20252.30M$13M+0.69%
Q3 20252.29M$13M+0.74%
Q2 20252.29M$9M+0.56%
Q1 20251.60M$8M+0.45%
Q4 20241.46M$7M+0.28%
Q2 20215.25M$40M+0.79%
Q1 20215.18M$34M+0.75%
Q4 20205.15M$33M+0.71%
Q3 20205.08M$27M+0.68%
Q2 20205.02M$35M+0.95%
Q1 20204.85M$28M+1.14%
Q4 20194.85M$36M+1.15%
Q3 20193.06M$14M+0.57%
Q2 20192.00M$5M+0.19%
Q1 20192.00M$6M+0.22%
Q4 20182.00M$4M+0.17%

Common-stock position only; options are excluded. Quarters where the fund filed no 13F or reported no position are absent. See Rock Springs Capital Management LP’s full portfolio or all institutional holders of ARDX.