Renaissance Technologies's CLH Position Overview
Renaissance Technologies (via Renaissance Technologies LLC) currently holds 11,302 shares of Clean Harbors, Inc. (CLH) worth $2.62 M, representing 0.00% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 50 quarters.
Based on 13F filings since 2013, Renaissance Technologies has maintained a long-term strategic position in CLH, representing a significant commitment to this investment thesis. Largest addition occurred in Q4 2015, adding 453,817 shares. Largest reduction occurred in Q1 2020, reducing 375,000 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies's Clean Harbors (CLH) Holding Value Over Time
Track share changes against reported price movement
Quarterly Clean Harbors (CLH) Trades by Renaissance Technologies
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q2 2013 | +161,803 | Add 0.00% | 161,802 | $50.53 |
| Q3 2013 | -7,400 | Reduce 4.57% | 154,402 | $58.66 |
| Q4 2013 | -154,402 | Sold Out | 154,402 | $0.00 |
| Q2 2014 | +7,302 | New Buy | 7,302 | $64.23 |
| Q3 2014 | +36,700 | Add 502.60% | 44,002 | $53.93 |
| Q4 2014 | +169,500 | Add 385.21% | 213,502 | $48.05 |
| Q1 2015 | -101,000 | Reduce 47.31% | 112,502 | $56.78 |
| Q2 2015 | -36,800 | Reduce 32.71% | 75,702 | $53.74 |
| Q3 2015 | +43,371 | Add 57.29% | 119,073 | $43.97 |
| Q4 2015 | +453,817 | Add 381.13% | 572,890 | $41.65 |
| Q1 2016 | +14,612 | Add 2.55% | 587,502 | $49.34 |
| Q2 2016 | +90,298 | Add 15.37% | 677,800 | $52.11 |
| Q3 2016 | +105,400 | Add 15.55% | 783,200 | $47.98 |
| Q4 2016 | +132,200 | Add 16.88% | 915,400 | $55.65 |
| Q1 2017 | +175,602 | Add 19.18% | 1.09 M | $55.62 |
| Q2 2017 | -114,700 | Reduce 10.51% | 976,302 | $55.83 |
| Q3 2017 | +3,698 | Add 0.38% | 980,000 | $56.70 |
| Q4 2017 | +217,102 | Add 22.15% | 1.2 M | $54.20 |
| Q1 2018 | +35,600 | Add 2.97% | 1.23 M | $48.81 |
| Q2 2018 | +88,400 | Add 7.17% | 1.32 M | $55.55 |
| Q3 2018 | +67,800 | Add 5.13% | 1.39 M | $71.58 |
| Q4 2018 | +260,800 | Add 18.78% | 1.65 M | $49.35 |
| Q1 2019 | -18,100 | Reduce 1.10% | 1.63 M | $71.53 |
| Q2 2019 | +18,300 | Add 1.12% | 1.65 M | $71.10 |
| Q3 2019 | +121,100 | Add 7.34% | 1.77 M | $77.20 |
| Q4 2019 | +106,633 | Add 6.02% | 1.88 M | $85.75 |
| Q1 2020 | -375,000 | Reduce 19.97% | 1.5 M | $51.34 |
| Q2 2020 | -235,000 | Reduce 15.64% | 1.27 M | $59.98 |
| Q3 2020 | -40,100 | Reduce 3.16% | 1.23 M | $56.03 |
| Q4 2020 | -123,100 | Reduce 10.03% | 1.1 M | $76.10 |
| Q1 2021 | -329,200 | Reduce 29.81% | 775,235 | $84.06 |
| Q2 2021 | -262,802 | Reduce 33.90% | 512,433 | $93.14 |
| Q3 2021 | -89,698 | Reduce 17.50% | 422,735 | $103.87 |
| Q4 2021 | -54,302 | Reduce 12.85% | 368,433 | $99.77 |
| Q1 2022 | -5,700 | Reduce 1.55% | 362,733 | $111.64 |
| Q2 2022 | +13,700 | Add 3.78% | 376,433 | $87.67 |
| Q3 2022 | +63,202 | Add 16.79% | 439,635 | $109.98 |
| Q4 2022 | +91,200 | Add 20.74% | 530,835 | $0.11 |
| Q1 2023 | -43,200 | Reduce 8.14% | 487,635 | $0.14 |
| Q2 2023 | -190,102 | Reduce 38.98% | 297,533 | $0.16 |
| Q3 2023 | -67,800 | Reduce 22.79% | 229,733 | $167.36 |
| Q4 2023 | -56,200 | Reduce 24.46% | 173,533 | $174.51 |
| Q1 2024 | -47,898 | Reduce 27.60% | 125,635 | $201.31 |
| Q2 2024 | -70,302 | Reduce 55.96% | 55,333 | $226.15 |
| Q3 2024 | -25,600 | Reduce 46.27% | 29,733 | $241.71 |
| Q4 2024 | -5,100 | Reduce 17.15% | 24,633 | $230.14 |
| Q1 2025 | -21,200 | Reduce 86.06% | 3,433 | $197.10 |
| Q2 2025 | -3,433 | Sold Out | 3,433 | $0.00 |
| Q3 2025 | +11,302 | New Buy | 11,302 | $232.22 |
Renaissance Technologies's Clean Harbors Investment FAQs
Renaissance Technologies first purchased Clean Harbors, Inc. (CLH) in Q2 2013, acquiring 161,802 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 has held Clean Harbors, Inc. (CLH) for 50 quarters since Q2 2013. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies's largest addition to Clean Harbors, Inc. (CLH) was in Q4 2015, adding 572,890 shares worth $23.86 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Renaissance Technologies's firm, Renaissance Technologies LLC, owns 11,302 shares of Clean Harbors, Inc. (CLH), valued at approximately $2.62 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Clean Harbors, Inc. (CLH) represents approximately 0.00% of Renaissance Technologies's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies's peak holding in Clean Harbors, Inc. (CLH) was 1,877,635 shares, as reported at the end of Q4 2019. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.