Question 1

How many shares of CLH does BlackRock, Inc. own?

Accepted Answer

As of 2026-Q2, BlackRock, Inc. holds 5.1M shares of CLH (CLEAN HARBORS INC).

Question 2

What is BlackRock, Inc.'s CLH position worth?

Accepted Answer

As of 2026-Q2, BlackRock, Inc.'s CLH position is worth $1.5B.

Question 3

Is BlackRock, Inc. buying or selling CLH?

Accepted Answer

In 2026-Q2, BlackRock, Inc. increased their CLH position (+5.7% change in shares).

Question 4

When did BlackRock, Inc. first buy CLH?

Accepted Answer

Based on available 13F filings, BlackRock, Inc. first reported a position in CLH in 2024-Q4. They have held the position across 7 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	5.1M	+5.7%	$1.5B	0.0%	$298.75	34
2026-Q1	Increased	4.8M	+4.4%	$1.4B	0.0%	$297.15	33
2025-Q4	Increased	4.6M	+1.5%	$1.1B	0.0%	$237.78	32
2025-Q3	Decreased	4.5M	-0.2%	$1.1B	0.0%	$233.46	0
2025-Q2	Decreased	4.5M	-0.8%	$1.1B	0.0%	$231.05	0
2025-Q1	Decreased	4.6M	-1.6%	$903.6M	0.0%	$197.15	0
2024-Q4	New	4.7M	-	$1.1B	0.0%	$230.16	44

CLH7 quarters

CLH
7 quarters