Renaissance Technologies (RenTech)'s HDSN Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 1.5 M shares of Hudson Technologies, Inc. (HDSN) worth $8.84 M, representing 0.01% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 29 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in HDSN, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2021, adding 286,049 shares. Largest reduction occurred in Q1 2017, reducing 263,400 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s Hudson Technologies (HDSN) Holding Value Over Time
Track share changes against reported price movement
Quarterly Hudson Technologies (HDSN) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | -193,000 | Reduce 11.37% | 1.5 M | $5.88 |
| Q4 2025 | -99,600 | Reduce 5.54% | 1.7 M | $6.85 |
| Q3 2025 | +125,000 | Add 7.48% | 1.8 M | $9.93 |
| Q2 2025 | +183,500 | Add 12.33% | 1.67 M | $8.12 |
| Q1 2025 | -13,800 | Reduce 0.92% | 1.49 M | $6.17 |
| Q4 2024 | +246,000 | Add 19.58% | 1.5 M | $5.58 |
| Q3 2024 | -68,700 | Reduce 5.19% | 1.26 M | $8.34 |
| Q2 2024 | -28,600 | Reduce 2.11% | 1.32 M | $8.79 |
| Q1 2024 | +16,700 | Add 1.25% | 1.35 M | $11.01 |
| Q4 2023 | +20,600 | Add 1.57% | 1.34 M | $13.49 |
| Q3 2023 | +55,400 | Add 4.39% | 1.32 M | $13.30 |
| Q2 2023 | -27,900 | Reduce 2.17% | 1.26 M | $0.01 |
| Q1 2023 | -9,298 | Reduce 0.72% | 1.29 M | $0.01 |
| Q4 2022 | +193,598 | Add 17.53% | 1.3 M | $0.01 |
| Q3 2022 | -60,300 | Reduce 5.18% | 1.1 M | $7.35 |
| Q2 2022 | +243,500 | Add 26.43% | 1.16 M | $7.51 |
| Q1 2022 | +165,800 | Add 21.95% | 921,150 | $6.21 |
| Q4 2021 | +253,500 | Add 50.51% | 755,350 | $4.44 |
| Q3 2021 | +165,000 | Add 48.98% | 501,850 | $3.53 |
| Q2 2021 | +30,901 | Add 10.10% | 336,850 | $3.40 |
| Q1 2021 | +286,049 | Add 1437.43% | 305,949 | $1.61 |
| Q4 2020 | +19,900 | New Buy | 19,900 | $1.11 |
| Q1 2017 | -263,400 | Sold Out | 0 | $0.00 |
| Q4 2016 | +165,100 | Add 167.96% | 263,400 | $8.01 |
| Q3 2016 | +98,300 | New Buy | 98,300 | $6.65 |
| Q1 2015 | -34,300 | Sold Out | 0 | $0.00 |
| Q4 2014 | +34,300 | New Buy | 34,300 | $3.76 |
| Q3 2013 | -90,400 | Sold Out | 0 | $0.00 |
| Q2 2013 | +90,400 | Add 0.00% | 90,400 | $3.19 |
Renaissance Technologies (RenTech)'s Hudson Technologies Investment FAQs
Renaissance Technologies (RenTech) first purchased Hudson Technologies, Inc. (HDSN) in Q2 2013, acquiring 90,400 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 Hudson Technologies, Inc. (HDSN) for 29 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to Hudson Technologies, Inc. (HDSN) was in Q1 2021, adding 305,949 shares worth $493,000.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 1,504,250 shares of Hudson Technologies, Inc. (HDSN), valued at approximately $8.84 M.
As of the Q1 2026 filing, Hudson Technologies, Inc. (HDSN) 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 Hudson Technologies, Inc. (HDSN) was 1,796,850 shares, as reported at the end of Q3 2025.