Clean Harbors, Inc. (CLH:NYSE) closed at $318.76 on October 23, 2026, down 0.69% on the day. The stock trades 5.1% below its 52-week high of $335.94 and 58.3% above its 52-week low of $201.34. Over the past year, it gained 29.9%. Clean Harbors, Inc. is part of the Basic Industries sector (Environmental Services).
In 252 trading sessions since October 23, 2025, CLH closed higher on 143 days (57%). Its best day was July 29, 2026 (+7.47%) and its worst was October 29, 2025 (-11.48%). The stock moved 10% or more in a single session 1 time. It opened at least 5% above the previous day's high 1 time.
Clean Harbors, Inc. provides environmental, energy, and industrial services in North America and internationally. The company's Technical Services segment provides a range of hazardous material management services, including the packaging, collection, transportation, treatment, and disposal of hazardous and non-hazardous waste at its incineration, landfill, wastewater, and other treatment facilities. Its Industrial and Field Services segment offers industrial and specialty services, such as high-pressure and chemical cleaning, daylighting, production servicing, decoking, pigging, and material processing services to refineries, chemical plants, oil sands facilities, pulp and paper mills, and other industrial facilities. This segment also provides tank cleaning, decontamination, remediation, and spill cleanup services. The company's Safety-Kleen segment offers environmental services, such as parts cleaning, containerized waste services, used oil collection, vacuum services, allied products, and other environmental services. This segment also manufactures, formulates, packages, blends, distributes, and markets lubricants. The company's Oil, Gas and Lodging Services segment provides fl...
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Based on end-of-day data. For information only, not investment advice.