What smart money is saying about Clean Harbors, Inc.
3 funds in our archive have pitched Clean Harbors, Inc., most recently Argent Mid Cap Strategy in September 2026.
Clean Harbors, Inc. delivers a comprehensive range of environmental and industrial services across North America. The company is structured into two primary divisions: Environmental Services and Safety-Kleen Sustainability Solutions. The Environmental Services segment manages the entire lifecycle of waste, from collection and transportation to treatment and final disposal of both hazardous and non-hazardous materials. This involves employing various techniques including resource reclamation, physical processing, fuel blending, incineration, secure landfilling, wastewater purification, and the proper handling of laboratory chemicals and explosive materials. Its specialized CleanPack services meticulously manage the collection, identification, categorization, bespoke packaging, transportation, and ultimate disposal of sensitive laboratory chemicals and household hazardous waste. This division further extends to industrial maintenance and specialized on-site industrial operations, leveraging advanced equipment and personnel for fieldwork. The Safety-Kleen Sustainability Solutions segment furnishes specially engineered parts washers and offers a diverse array of automotive and industrial cleaning agents, including antifreeze, windshield washer fluid, degreasers, surface and floor cleaners, hand sanitizers, absorbents, protective mats, and spill containment kits. This division handles the collection and transport of both hazardous and non-hazardous containerized waste, facilitating either recycling or appropriate disposal. It provides vacuum extraction services to eliminate solid debris, residual oily water, sludge, and other liquids from client oil/water separators, sumps, and collection tanks. It also collects waste fluids generated by metal fabrication facilities, automotive service centers, and various general manufacturing operations. Furthermore, this segment is involved in the manufacturing, formulation, packaging, distribution, and marketing of lubricants, additionally offering containerized waste management, vacuum services, the collection of used motor oil, and custom blending and packaging solutions. Established in 1980, the company maintains its headquarters in Norwell, Massachusetts.
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Fund signal · last 12 months
6 lettersToo few moves on Clean Harbors, Inc. yet for a clear signal
Moves described in fund letters in our archive. A sentence published word for word by several funds of one house in the same quarter counts once.
Position history
Between Q4 2024 and Q3 2026, 7 fund letters reported a position in Clean Harbors, Inc., with 4 buys (opened or added).
| Quarter | Letters | Bought | Sold | Theses |
|---|---|---|---|---|
| Q3 2026 | 3 | 2 | 0 | 2 |
| Q2 2026 | 1 | 0 | 0 | 0 |
| Q1 2026 | 2 | 1 | 0 | 0 |
| Q2 2025 | 1 | 1 | 0 | 0 |
| Q4 2024 | 0 | 0 | 0 | 1 |
Bought and Sold count moves: the same sentence published by several funds of one house in a quarter counts once.
Fund activity · 7 positions · 5 moves
- New positionArtisan Partners U.S. Mid-Cap Growth StrategySeptember 2026
“Portfolio Activity During the quarter, we initiated new positions in Manhattan Associates, Okta and Clean Harbors.”
Clean Harbors, Inc. - New positionArtisan Partners Global Discovery StrategySeptember 2026
“Clean Harbors is a leading provider of environmental and hazardous waste management services, with a vertically integrated network spanning collection, treatment, incineration and disposal. We initiated a GardenSM position as we believe the company is relatively early in a profit cycle supported by recovering industrial activity and several secular growth opportunities.”
Clean Harbors, Inc. - New positionArtisan Partners Global Discovery FundSeptember 2026
“During the quarter, we initiated new positions in Manhattan Associates, Okta and Clean Harbors.”
Clean Harbors, Inc. - June 2026
“Clean Harbors collects, manages and destroys or stores hazardous industrial waste.”
Clean Harbors, Inc. - March 2026
“The share price of Clean Harbors had become increasingly attractive toward the end of last year following its most recent earnings report. With negative earnings revisions now in the rear‑view mirror, and upside potential from higher recycling commodity prices, a cyclical volume recovery, and possible M&A activity, we added to our position during the quarter. The company’s shares increased 22% over the period.”
Clean Harbors, Inc. - HoldsThe Davenport FundsMarch 2026
“Other top performers included Clean Harbors, Inc. (CLH) and Casey’s General Stores, Inc. (CASY).”
Clean Harbors, Inc. - New positionFederated Hermes Sustainable Global EquityJune 2025
“Investment strategy Federated Hermes Sustainable Global Equity is a high-conviction global equity strategy. It aims to generate attractive financial returns by investing in companies that are aligned with achieving positive outcomes for society and the environment and ultimately support the United Nations Sustainable Development Goals (UN SDGs). The Strategy is a concentrated, high active-share strategy. We believe that ‘impactful,’ ‘leading’ and ‘improving’ companies play a critical role in contributing towards a more sustainable future and are well-positioned to benefit from structural sustainability trends over the long term. We believe sustainable investments are companies with business models geared towards creating value for society, with a positive or improving sustainability profile, and whose activities have an overall positive impact through their products and services. Our long-term holding periods and stewardship expertise enable us to develop effective and enduring engagement with these companies that can deliver additional impact and provide greater insight. From a sector perspective, the Strategy remains overweight Industrials, Information Technology and Healthcare, and underweight Consumer Discretionary, Communication Services, with zero-weight in Energy and Utilities. Over the H1 period, we added five positions in Clean Harbors, ServiceNow, T-Mobile, Nasdaq, and Linde, and closed out two positions in WEX and Gartner.”
Clean Harbors, Inc.
Fund coverage · 3 theses
- Argent Mid Cap StrategySeptember 2026
Clean Harbors has a hard-to-replicate network and is positioned for durable growth from remediation, manufacturing, and data-center-related demand.
Read the full thesis - Artisan Partners U.S. Mid-Cap Growth StrategySeptember 2026
Clean Harbors, Inc. benefits from a profit cycle tied to industrial recovery, PFAS remediation demand and long-term data center opportunities.
Read the full thesis - Bell Global Emerging Companies FundDecember 2024
Clean Harbors is expected to experience strong growth due to increasing environmental regulations, asset scarcity, onshoring of manufacturing, and market underappreciation of its value.
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