Clean Harbors Inc (CLH) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

53,755,204Shares Outstanding

549,852Shares held by institutions

$147,954,176Value of institutional holdings

94.11%Institutional ownership %

6.81%Shares Changed QoQ

535No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A total of 535 institutions have reported a stake in Clean Harbors Inc (NYSE:CLH) as of December 2025, according to recent 13F filings with the SEC.

The percentage of Clean Harbors owned by institutions changed from 92.4% in September 2025 to 94.1% in December 2025, marking a slight up trend.
Quarterly data indicates a 6.81% shift in institutional share volume, and the annual owner count reflects a decrease of 5.31%.
The latest 13F cycle for Clean Harbors reveals that of 535 total investors, 234 funds grew their exposure, whereas 210 reduced theirs and 91 made no changes.
The total number of shares held by institutions in Clean Harbors increased to 50.59Mn as of December 2025, a net change of up by 3.23Mn shares quarter on quarter, and up 1.28Mn shares year over year.
WELLINGTON MANAGEMENT GROUP LLP's holding of 5.18Mn shares as of December 31, 2025 makes it the primary institutional investor in Clean Harbors, owning 9.64% of the stock.
Among the most significant buyers of Clean Harbors during December 2025 were LONE PINE CAPITAL LLC (1.38Mn), NORGES BANK (649.08K), Palestra Capital Management LLC (569.99K), NORDEA INVESTMENT MANAGEMENT AB (569.39K), UBS Group AG (366.62K).
Leading sellers of Clean Harbors stock in December 2025 included WELLINGTON MANAGEMENT GROUP LLP (391.61K), Handelsbanken Fonder AB (287.50K), AMERICAN CENTURY COMPANIES INC (204.77K), Pictet Asset Management Holding SA (185.79K), BESSEMER GROUP INC (182.42K).
The top 10 institutional holders of Clean Harbors for the quarter ending December 2025 included WELLINGTON MANAGEMENT GROUP LLP (5.18Mn), BlackRock, Inc. (4.60Mn), VANGUARD GROUP INC (4.49Mn), D1 Capital Partners L.P. (2.78Mn), JANUS HENDERSON GROUP PLC (2.38Mn), Pictet Asset Management Holding SA (1.89Mn), STATE STREET CORP (1.50Mn), LONE PINE CAPITAL LLC (1.38Mn), Clearbridge Investments, LLC (1.33Mn), SNYDER CAPITAL MANAGEMENT L P (1.15Mn).

535 Institutional Holders

549,852 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	5,182,538	-391,614	-7.03%	$1,215,201,510.00
BlackRock, Inc.	31 Dec, 2025	4,601,386	66,733	1.47%	$1,078,932,990.00
VANGUARD GROUP INC	31 Dec, 2025	4,489,676	-62,721	-1.38%	$1,052,739,229.00
D1 Capital Partners L.P.	31 Dec, 2025	2,781,882	336,299	13.75%	$652,295,691.00
JANUS HENDERSON GROUP PLC	31 Dec, 2025	2,376,088	215,659	9.98%	$557,145,885.00
Pictet Asset Management Holding SA	31 Dec, 2025	1,885,730	-185,786	-8.97%	$442,291,801.00
STATE STREET CORP	31 Dec, 2025	1,503,096	-12,525	-0.83%	$352,445,950.00
LONE PINE CAPITAL LLC	31 Dec, 2025	1,378,125	1,378,125	0.00%	$323,142,750.00
Clearbridge Investments, LLC	31 Dec, 2025	1,329,426	-96,925	-6.80%	$311,723,872.00
SNYDER CAPITAL MANAGEMENT L P	31 Dec, 2025	1,150,188	1,684	0.15%	$269,696,082.00
NORDEA INVESTMENT MANAGEMENT AB	31 Dec, 2025	1,040,594	569,388	120.84%	$246,724,837.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	917,779	11,020	1.22%	$215,247,172.00
BESSEMER GROUP INC	31 Dec, 2025	915,280	-182,422	-16.62%	$214,615.00
Select Equity Group, L.P.	31 Dec, 2025	849,499	76,119	9.84%	$199,190,526.00
Durable Capital Partners LP	31 Dec, 2025	834,763	261,097	45.51%	$195,735,228.00
FIRST TRUST ADVISORS LP	31 Dec, 2025	707,994	56,309	8.64%	$166,010,432.00
NORGES BANK	31 Dec, 2025	649,075	649,075	0.00%	$152,195,106.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	619,612	4,768	0.78%	$145,297,392.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	595,465	-24,581	-3.96%	$139,624,634.00
Palestra Capital Management LLC	31 Dec, 2025	569,991	569,991	0.00%	$133,651,490.00

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