Company · Ownership research

CLEAN HARBORS INC CLH

CIK 0000822818 · CUSIP 184496107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 184496107 (CLH), not CUSIP 184496907 (CLH), CUSIP 184496957 (CLH), and does not merge CUSIPs.

This page lists the top 20 of 567 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$1.22B 5,182,538 shares	0.21%	-391.61K(-7.00%)Reduced	SEC filing ↗ Feb 17, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$1.08B 4,601,386 shares	0.02%	+66.73K(+1.50%)Added	SEC filing ↗ Feb 12, 2026	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$1.05B 4,489,676 shares	0.02%	-62.72K(-1.40%)Reduced	SEC filing ↗ Jan 29, 2026	▾
04	D1 Capital Partners L.P. CIK 1747057 · View history	$652.30M 2,781,882 shares	6.10%	+336.30K(+13.80%)Added	SEC filing ↗ Feb 17, 2026	▾
05	JANUS HENDERSON GROUP PLC CIK 1274173 · View history	$557.15M 2,376,088 shares	0.25%	+215.66K(+10.00%)Added	SEC filing ↗ Feb 17, 2026	▾
06	Pictet Asset Management Holding SA CIK 1993888 · View history	$442.29M 1,885,730 shares	0.43%	-185.79K(-9.00%)Reduced	SEC filing ↗ Jan 29, 2026	▾
07	STATE STREET CORP CIK 93751 · View history	$352.45M 1,503,096 shares	0.01%	-12.53K(-0.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
08	LONE PINE CAPITAL LLC CIK 1061165 · View history	$323.14M 1,378,125 shares	2.37%	+1.38MNew	SEC filing ↗ Feb 17, 2026	▾
09	Clearbridge Investments, LLC CIK 1348883 · View history	$311.72M 1,329,426 shares	0.25%	-96.92K(-6.80%)Reduced	SEC filing ↗ Feb 11, 2026	▾
10	SNYDER CAPITAL MANAGEMENT L P CIK 1050477 · View history	$269.70M 1,150,188 shares	5.03%	+1.68K(+0.10%)Added	SEC filing ↗ Feb 12, 2026	▾
11	NORDEA INVESTMENT MANAGEMENT AB CIK 1218210 · View history	$246.72M 1,040,594 shares	0.21%	+569.39K(+120.80%)Added	SEC filing ↗ Jan 8, 2026	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$215.25M 917,779 shares	0.01%	+11.02K(+1.20%)Added	SEC filing ↗ Feb 9, 2026	▾
13	BESSEMER GROUP INC CIK 1054074 · View history	$214.62M 915,280 shares	0.33%	-182.42K(-16.60%)Reduced	SEC filing ↗ Feb 5, 2026	▾
14	Select Equity Group, L.P. CIK 1592643 · View history	$199.19M 849,499 shares	0.92%	+76.12K(+9.80%)Added	SEC filing ↗ Feb 17, 2026	▾
15	Durable Capital Partners LP CIK 1798849 · View history	$195.74M 834,763 shares	1.85%	+261.10K(+45.50%)Added	SEC filing ↗ Feb 17, 2026	▾
16	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$166.01M 707,994 shares	0.12%	+56.31K(+8.60%)Added	SEC filing ↗ Feb 13, 2026	▾
17	NORGES BANK CIK 1374170 · View history	$152.20M 649,075 shares	0.02%	+649.08KNew	SEC filing ↗ Feb 10, 2026	▾
18	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$145.30M 619,612 shares	0.03%	+4.77K(+0.80%)Added	SEC filing ↗ Feb 12, 2026	▾
19	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC CIK 861177 · View history	$139.62M 595,465 shares	0.03%	-24.58K(-4.00%)Reduced	SEC filing ↗ Feb 13, 2026	▾
20	Palestra Capital Management LLC CIK 1568788 · View history	$133.65M 569,991 shares	4.75%	+569.99KNew	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 567 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

567

Cancelled or null records excluded

Disclosed shares

51,465,502

Not deduplicated across managers

Disclosed value

$12.07B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

CLEAN HARBORS INC · Q4 2025

Explore all 567 reporting institutions.

This page includes 20 of 567 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.