Atom Investors’s Clean Harbors CLH Stock Holding History

Atom 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
2026 Q2	$251K	Buy	+840	New	+$248K	0.02%	721
2026 Q1	–	Sell	-31,001	Closed	-$7.27M	–	683
2025 Q4	$7.27M	Buy	+31,001	New	+$7.08M	0.58%	35
2025 Q3	–	Sell	-5,844	Closed	-$1.35M	–	631
2025 Q2	$1.35M	Buy	+5,844	New	+$1.28M	0.12%	210
2020 Q3	–	Sell	-23,977	Closed	-$1.44M	–	524
2020 Q2	$1.44M	Buy	23,977 +15,118	+171%	+$843K	0.09%	176
2020 Q1	$455K	Buy	+8,859	New	+$647K	0.04%	214
2019 Q1	–	Sell	-34,059	Closed	-$1.68M	–	540
2018 Q4	$1.68M	Buy	+34,059	New	+$2.12M	0.17%	133

Other funds holding CLH

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

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Jupiter Topco New York $245B AUM

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

DCP

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

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

Atom Investors's CLH Position: Q2 2026 in Review

Atom Investors opened a new position in Clean Harbors (CLH) in Q2 2026: 840 shares worth $251K. The stake represents 0.02% of the portfolio and ranks #721 among its holdings. This is a return to the name: Atom Investors previously reported a position in CLH as recently as Q4 2025.

Atom Investors first reported a position in CLH in Q4 2018 and has held it in 6 quarters since. The position peaked at $7.27M in Q4 2025. 660 funds tracked by Wall St. Rank hold CLH as of Q2 2026.

Atom Investors held 840 shares of Clean Harbors worth $251K as of Q2 2026.
Clean Harbors was a new Atom Investors position in Q2 2026.
Clean Harbors made up 0.02% of Atom Investors's portfolio in Q2 2026, its #721 holding.
Atom Investors first reported a position in Clean Harbors in Q4 2018 and has held it in 6 quarters since.
Atom Investors's Clean Harbors position peaked at $7.27M in Q4 2025.
660 funds tracked by Wall St. Rank held Clean Harbors as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.