Aperture Investors’s Clean Harbors CLH Stock Holding History

Aperture Investors’s Portfolio CLH Stock Details CLH Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-109,259	Closed	-$25.3M	–	85
2025 Q2	$25.3M	Sell	109,259 -32,814	-23%	-$7.18M	3.3%	5
2025 Q1	$28M	Buy	142,073 +49,109	+53%	+$10.7M	3.58%	2
2024 Q4	$21.4M	Sell	92,964 -14,431	-13%	-$3.58M	2.69%	17
2024 Q3	$26M	Buy	107,395 +2,271	+2%	+$534K	3.3%	8
2024 Q2	$23.8M	Sell	105,124 -31,760	-23%	-$6.66M	3.47%	5
2024 Q1	$27.6M	Buy	136,884 +54,890	+67%	+$9.87M	3.53%	2
2023 Q4	$14.3M	Buy	+81,994	New	+$13.5M	2.52%	13

Other funds holding CLH

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

DCP

D1 Capital Partners New York $34.8B AUM 11.34% 1-Year Est. Return

Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return

SCM

Snyder Capital Management San Francisco, California $5.79B AUM 33.56% 1-Year Est. Return

Bessemer Group Woodbridge, New Jersey $72.7B AUM 39.36% 1-Year Est. Return

Aperture Investors's CLH Position: Q3 2025 in Review

Aperture Investors sold out of Clean Harbors (CLH) in Q3 2025, closing a stake of 109,259 shares — an estimated $25.3M sold.

Aperture Investors first reported a position in CLH in Q4 2023 and held it in 7 quarters. The position peaked at $28M in Q1 2025. 569 funds tracked by Wall St. Rank hold CLH as of Q3 2025.

Aperture Investors reported no remaining Clean Harbors position as of Q3 2025 after selling out during the quarter.
Aperture Investors sold 109,259 Clean Harbors shares in Q3 2025, an estimated $25.3M.
Aperture Investors first reported a position in Clean Harbors in Q4 2023 and held it in 7 quarters.
Aperture Investors's Clean Harbors position peaked at $28M in Q1 2025.
569 funds tracked by Wall St. Rank held Clean Harbors as of Q3 2025.

Based on Aperture Investors's 13F filing for Q3 2025, filed 14 Nov 2025.