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

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$502K Buy
2,172
+237
+12% +$54.8K ﹤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% -$1.13K ﹤0.01% 1133
2024
Q1
$391K Buy
1,940
+5
+0.3% +$1.01K ﹤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 +$221K ﹤0.01% 1334
2014
Q2
Sell
-14,465
Closed -$793K 2079
2014
Q1
$793K Sell
14,465
-74,553
-84% -$4.09M ﹤0.01% 1484
2013
Q4
$5.34M Sell
89,018
-1,799,615
-95% -$108M 0.01% 928
2013
Q3
$111M Sell
1,888,633
-109,346
-5% -$6.41M 0.2% 154
2013
Q2
$101M Buy
+1,997,979
New +$101M 0.2% 148