Renaissance Technologies (RenTech)'s ARDX Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 1.27 M shares of Ardelyx, Inc. (ARDX) worth $7.62 M, representing 0.01% of the portfolio. First purchased in 2015-Q1, this long-term strategic position has been held for 36 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in ARDX, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2023, adding 2.69 M shares. Largest reduction occurred in Q2 2023, reducing 1.29 M shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Ardelyx (ARDX) Holding Value Over Time
Track share changes against reported price movement
Quarterly Ardelyx (ARDX) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -522,352 | Reduce 29.10% | 1.27 M | $5.99 |
| Q4 2025 | +104,700 | Add 6.19% | 1.79 M | $5.83 |
| Q3 2025 | +388,900 | Add 29.89% | 1.69 M | $5.51 |
| Q2 2025 | -50,400 | Reduce 3.73% | 1.3 M | $3.92 |
| Q1 2025 | +1.35 M | New Buy | 1.35 M | $4.91 |
| Q4 2023 | -1.19 M | Sold Out | 0 | $0.00 |
| Q3 2023 | -661,720 | Reduce 35.83% | 1.19 M | $4.08 |
| Q2 2023 | -1.29 M | Reduce 41.14% | 1.85 M | $0.00 |
| Q1 2023 | +2.69 M | Add 597.74% | 3.14 M | $0.00 |
| Q4 2022 | +195,444 | Add 76.87% | 449,693 | $0.00 |
| Q3 2022 | +45,256 | Add 21.65% | 254,249 | $1.19 |
| Q2 2022 | -1.09 M | Reduce 83.87% | 208,993 | $0.59 |
| Q1 2022 | -744,828 | Reduce 36.50% | 1.3 M | $1.07 |
| Q4 2021 | +2.04 M | New Buy | 2.04 M | $1.10 |
| Q2 2021 | -499,273 | Sold Out | 0 | $0.00 |
| Q1 2021 | -263,594 | Reduce 34.55% | 499,273 | $6.62 |
| Q4 2020 | -304,947 | Reduce 28.56% | 762,867 | $6.47 |
| Q3 2020 | -621,520 | Reduce 36.79% | 1.07 M | $5.25 |
| Q2 2020 | -298,000 | Reduce 14.99% | 1.69 M | $6.92 |
| Q1 2020 | -475,900 | Reduce 19.32% | 1.99 M | $5.69 |
| Q4 2019 | +31,100 | Add 1.28% | 2.46 M | $7.51 |
| Q3 2019 | +332,064 | Add 15.81% | 2.43 M | $4.70 |
| Q2 2019 | +118,468 | Add 5.98% | 2.1 M | $2.69 |
| Q1 2019 | -217,119 | Reduce 9.87% | 1.98 M | $2.80 |
| Q4 2018 | +1.02 M | Add 86.17% | 2.2 M | $1.79 |
| Q3 2018 | +405,860 | Add 52.36% | 1.18 M | $4.35 |
| Q2 2018 | +383,340 | Add 97.84% | 775,140 | $3.70 |
| Q1 2018 | +135,800 | Add 53.05% | 391,800 | $5.05 |
| Q4 2017 | +160,600 | Add 168.34% | 256,000 | $6.60 |
| Q3 2017 | +95,400 | New Buy | 95,400 | $5.60 |
| Q1 2017 | -66,300 | Sold Out | 0 | $0.00 |
| Q4 2016 | +19,300 | Add 41.06% | 66,300 | $14.19 |
| Q3 2016 | +47,000 | New Buy | 47,000 | $12.94 |
| Q3 2015 | -12,600 | Sold Out | 0 | $0.00 |
| Q2 2015 | -39,000 | Reduce 75.58% | 12,600 | $15.95 |
| Q1 2015 | +51,600 | New Buy | 51,600 | $13.08 |
Renaissance Technologies (RenTech)'s Ardelyx Investment FAQs
Renaissance Technologies (RenTech) first purchased Ardelyx, Inc. (ARDX) in Q1 2015, acquiring 51,600 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held Ardelyx, Inc. (ARDX) for 36 quarters since Q1 2015.
Renaissance Technologies (RenTech)'s largest addition to Ardelyx, Inc. (ARDX) was in Q1 2023, adding 3,137,693 shares worth $15,030.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 1,272,441 shares of Ardelyx, Inc. (ARDX), valued at approximately $7.62 M.
As of the Q1 2026 filing, Ardelyx, Inc. (ARDX) represents approximately 0.01% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in Ardelyx, Inc. (ARDX) was 3,137,693 shares, as reported at the end of Q1 2023.