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Atika Capital Management’s Clean Harbors CLH Stock Holding History

Atika Capital 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 		– Sell
-21,855
Closed -$6.27M – 84
2026
Q1 		$6.27M Buy
21,855
+18,855
+629% +$5.15M 0.79% 36
2025
Q4 		$703K Buy
+3,000
New +$685K 0.07% 76

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JT
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State Street
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DCP
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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

Atika Capital Management's CLH Position: Q2 2026 in Review

Atika Capital Management sold out of Clean Harbors (CLH) in Q2 2026, closing a stake of 21,855 shares — an estimated $6.27M sold.

Atika Capital Management first reported a position in CLH in Q4 2025 and held it in 2 quarters. The position peaked at $6.27M in Q1 2026. 660 funds tracked by Wall St. Rank hold CLH as of Q2 2026.

  • Atika Capital Management reported no remaining Clean Harbors position as of Q2 2026 after selling out during the quarter.
  • Atika Capital Management sold 21,855 Clean Harbors shares in Q2 2026, an estimated $6.27M.
  • Atika Capital Management first reported a position in Clean Harbors in Q4 2025 and held it in 2 quarters.
  • Atika Capital Management's Clean Harbors position peaked at $6.27M in Q1 2026.
  • 660 funds tracked by Wall St. Rank held Clean Harbors as of Q2 2026.

Based on Atika Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.