Renaissance Technologies (RenTech)'s IDXX Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 48,504 shares of IDEXX Laboratories, Inc. (IDXX) worth $27.25 M, representing 0.04% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 44 quarters.
Based on 13F filings since 2013, Renaissance Technologies (RenTech) has maintained a long-term strategic position in IDXX, representing a significant commitment to this investment thesis. Largest addition occurred in Q2 2017, adding 376,300 shares. Largest reduction occurred in Q3 2013, reducing 447,504 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s IDEXX Laboratories (IDXX) Holding Value Over Time
Track share changes against reported price movement
Quarterly IDEXX Laboratories (IDXX) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +48,504 | New Buy | 48,504 | $561.89 |
| Q1 2025 | -25,000 | Sold Out | 0 | $0.00 |
| Q4 2024 | -10,700 | Reduce 29.97% | 25,000 | $413.44 |
| Q3 2024 | +15,096 | Add 73.27% | 35,700 | $505.22 |
| Q2 2024 | -13,200 | Reduce 39.05% | 20,604 | $487.20 |
| Q1 2024 | +33,804 | New Buy | 33,804 | $539.94 |
| Q4 2023 | -124,804 | Sold Out | 0 | $0.00 |
| Q3 2023 | +124,804 | New Buy | 124,804 | $437.27 |
| Q4 2022 | -58,004 | Sold Out | 0 | $0.00 |
| Q3 2022 | -159,500 | Reduce 73.33% | 58,004 | $325.81 |
| Q2 2022 | +191,704 | Add 743.04% | 217,504 | $350.73 |
| Q1 2022 | +18,500 | Add 253.42% | 25,800 | $547.05 |
| Q4 2021 | +7,300 | New Buy | 7,300 | $658.49 |
| Q4 2020 | -87,204 | Sold Out | 0 | $0.00 |
| Q3 2020 | -115,976 | Reduce 57.08% | 87,204 | $393.11 |
| Q2 2020 | -147,945 | Reduce 42.13% | 203,180 | $330.16 |
| Q1 2020 | -288,804 | Reduce 45.13% | 351,125 | $242.24 |
| Q4 2019 | +12,804 | Add 2.04% | 639,929 | $261.13 |
| Q3 2019 | -265,900 | Reduce 29.78% | 627,125 | $271.93 |
| Q2 2019 | -196,100 | Reduce 18.01% | 893,025 | $275.33 |
| Q1 2019 | -427,204 | Reduce 28.17% | 1.09 M | $223.60 |
| Q4 2018 | -261,675 | Reduce 14.72% | 1.52 M | $186.02 |
| Q3 2018 | -391,925 | Reduce 18.06% | 1.78 M | $249.66 |
| Q2 2018 | +81,025 | Add 3.88% | 2.17 M | $217.94 |
| Q1 2018 | +209,100 | Add 11.12% | 2.09 M | $191.39 |
| Q4 2017 | +290,004 | Add 18.24% | 1.88 M | $156.38 |
| Q3 2017 | +237,900 | Add 17.60% | 1.59 M | $155.49 |
| Q2 2017 | +376,300 | Add 38.57% | 1.35 M | $161.42 |
| Q1 2017 | +362,400 | Add 59.10% | 975,600 | $154.61 |
| Q4 2016 | -81,104 | Reduce 11.68% | 613,200 | $117.27 |
| Q3 2016 | +156,900 | Add 29.20% | 694,304 | $112.73 |
| Q2 2016 | +99,900 | Add 22.83% | 537,404 | $92.86 |
| Q1 2016 | +309,804 | Add 242.60% | 437,504 | $78.32 |
| Q4 2015 | +94,600 | Add 285.80% | 127,700 | $72.92 |
| Q3 2015 | -221,704 | Reduce 87.01% | 33,100 | $74.26 |
| Q2 2015 | -329,100 | Reduce 56.36% | 254,804 | $64.14 |
| Q1 2015 | -53,600 | Reduce 8.41% | 583,904 | $77.24 |
| Q4 2014 | +53,400 | Add 9.14% | 637,504 | $74.13 |
| Q3 2014 | +281,304 | Add 92.90% | 584,104 | $58.91 |
| Q2 2014 | +185,000 | Add 157.05% | 302,800 | $66.78 |
| Q1 2014 | -29,304 | Reduce 19.92% | 117,800 | $60.70 |
| Q4 2013 | -90,296 | Reduce 38.04% | 147,104 | $53.19 |
| Q3 2013 | -447,504 | Reduce 65.34% | 237,400 | $49.82 |
| Q2 2013 | +684,904 | Add 0.00% | 684,904 | $44.85 |
Renaissance Technologies (RenTech)'s IDEXX Laboratories Investment FAQs
Renaissance Technologies (RenTech) first purchased IDEXX Laboratories, Inc. (IDXX) in Q2 2013, acquiring 684,904 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 IDEXX Laboratories, Inc. (IDXX) for 44 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to IDEXX Laboratories, Inc. (IDXX) was in Q2 2013, adding 684,904 shares worth $30.72 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 48,504 shares of IDEXX Laboratories, Inc. (IDXX), valued at approximately $27.25 M.
As of the Q1 2026 filing, IDEXX Laboratories, Inc. (IDXX) represents approximately 0.04% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in IDEXX Laboratories, Inc. (IDXX) was 2,169,929 shares, as reported at the end of Q2 2018.