William Blair & Company
CLH icon

William Blair & Company’s Clean Harbors CLH Stock Holding History

William Blair & Company’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
Q1 		$760K Buy
2,651
+663
+33% +$181K ﹤0.01% 1024
2025
Q4 		$466K Sell
1,988
-45
-2% -$10.3K ﹤0.01% 1166
2025
Q3 		$472K Sell
2,033
-139
-6% -$32.9K ﹤0.01% 1135
2025
Q2 		$502K Buy
2,172
+237
+12% +$51.9K ﹤0.01% 1084
2025
Q1 		$381K Hold
1,935
– – ﹤0.01% 1168
2024
Q4 		$445K Hold
1,935
– – ﹤0.01% 1132
2024
Q3 		$468K Hold
1,935
– – ﹤0.01% 1135
2024
Q2 		$438K Sell
1,935
-5
-0.3% -$1.05K ﹤0.01% 1133
2024
Q1 		$391K Buy
1,940
+5
+0.3% +$899 ﹤0.01% 1156
2023
Q4 		$338K Hold
1,935
– – ﹤0.01% 1200
2023
Q3 		$324K Hold
1,935
– – ﹤0.01% 1199
2023
Q2 		$318K Hold
1,935
– – ﹤0.01% 1227
2023
Q1 		$276K Hold
1,935
– – ﹤0.01% 1269
2022
Q4 		$221K Buy
+1,935
New +$226K ﹤0.01% 1334
2014
Q2 		– Sell
-14,465
Closed -$793K – 2088
2014
Q1 		$793K Sell
14,465
-74,553
-84% -$4.06M ﹤0.01% 1485
2013
Q4 		$5.34M Sell
89,018
-1,799,615
-95% -$104M 0.01% 928
2013
Q3 		$111M Sell
1,888,633
-109,346
-5% -$6.1M 0.2% 154
2013
Q2 		$101M Buy
+1,997,979
New +$111M 0.2% 148

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