BlackRock Inc. acquired a new position in shares of Clean Harbors, Inc. (NYSE: CLH) during the undefined quarter, according to its most recent filing with the SEC. The institutional investor acquired 5,076,220 shares of the business services provider's stock, valued at approximately $1,516,521,000. BlackRock Inc. owned 9.62% of Clean Harbors at the end

CLH's 16% six-month gain is backed by rising 2026 estimates, strong liquidity and ongoing buybacks, supporting EPS growth.

The insider disposed of 1,000 shares for $293,000 on March 18, 2026. The transaction represents a 2% reduction in the insider's direct equity holdings.

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Clean Harbors' 13.3% three-month gain reflects stronger earnings, higher margins and raised guidance, though its premium valuation raises the execution bar.

Clean Harbors' earnings growth and improving cash flow strengthen its outlook, but premium valuation and execution risks favor patience over chasing momentum.

NEW YORK--(BUSINESS WIRE)--One Rock Capital Partners, LLC (together with its affiliates, “One Rock”), a value-oriented, operationally focused private equity firm, today announced that it has entered into a definitive agreement to sell EnviroServe Inc. and its related affiliates (collectively, “EnviroServe” or the “Company”) to Clean Harbors, Inc. (“Clean Harbors”) (NYSE: CLH) for $470 million. The transaction is expected to close in the second half of 2026, subject to regulatory approval and ot.

NORWELL, Mass.--(BUSINESS WIRE)--Clean Harbors, Inc. (“Clean Harbors” or the “Company”) (NYSE: CLH), a leading provider of environmental and industrial services throughout North America, today announced that it has entered into a definitive agreement to acquire EnviroServe, a national provider of environmental and waste management services, from an affiliate of One Rock Capital Partners, LLC for $470 million in cash. The acquisition is expected to close in the second half of 2026, subject to re.

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Clean Harbors beats second-quarter estimates, raises 2026 guidance and secures a $600 million disposal contract, yet shares fall after the report.