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Montanaro Asset Management’s Clean Harbors CLH Stock Holding History

Montanaro Asset Management’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 		$4.03M Buy
13,500
+9,900
+275% +$2.92M 1.27% 28
2026
Q1 		$1.03M Buy
+3,600
New +$983K 0.31% 42

Other funds holding CLH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
JT
Jupiter Topco New York $245B AUM
State Street
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
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return

Montanaro Asset Management's CLH Position: Q2 2026 in Review

Montanaro Asset Management increased its Clean Harbors (CLH) stake by 275% in Q2 2026, buying an estimated $2.92M and bringing the position to 13,500 shares worth $4.03M. The position accounts for 1.27% of the portfolio, ranked #28.

Montanaro Asset Management first reported a position in CLH in Q1 2026 and has held it in 2 quarters since. 660 funds tracked by Wall St. Rank hold CLH as of Q2 2026.

  • Montanaro Asset Management held 13,500 shares of Clean Harbors worth $4.03M as of Q2 2026.
  • Montanaro Asset Management bought 9,900 Clean Harbors shares in Q2 2026, an estimated $2.92M.
  • Clean Harbors made up 1.27% of Montanaro Asset Management's portfolio in Q2 2026, its #28 holding.
  • Montanaro Asset Management first reported a position in Clean Harbors in Q1 2026 and has held it in 2 quarters since.
  • 660 funds tracked by Wall St. Rank held Clean Harbors as of Q2 2026.

Based on Montanaro Asset Management's 13F filing for Q2 2026, filed 12 Aug 2026.