Needham Investment Management’s Clean Harbors CLH Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$19.7M Hold
68,856
1.01% 29
2025
Q4
$16.1M Buy
68,856
+5,875
+9% +$1.34M 1.02% 32
2025
Q3
$14.6M Buy
62,981
+2,075
+3% +$491K 1.02% 33
2025
Q2
$14.1M Hold
60,906
1.12% 30
2025
Q1
$12M Buy
60,906
+150
+0.2% +$32.8K 1.12% 31
2024
Q4
$14M Hold
60,756
1.08% 31
2024
Q3
$14.7M Buy
60,756
+150
+0.2% +$35.3K 1.13% 32
2024
Q2
$13.7M Buy
60,606
+250
+0.4% +$52.4K 1.13% 25
2024
Q1
$12.2M Buy
60,356
+2,050
+4% +$368K 1.13% 23
2023
Q4
$10.2M Buy
58,306
+6,700
+13% +$1.1M 1.28% 22
2023
Q3
$8.64M Buy
51,606
+500
+1% +$84.3K 1.47% 18
2023
Q2
$8.4M Sell
51,106
-1,400
-3% -$205K 1.38% 20
2023
Q1
$7.49M Hold
52,506
1.29% 25
2022
Q4
$5.99M Sell
52,506
-1,500
-3% -$175K 1.08% 32
2022
Q3
$5.94M Hold
54,006
1.16% 31
2022
Q2
$4.74M Buy
54,006
+25,106
+87% +$2.42M 0.89% 39
2022
Q1
$3.23M Buy
28,900
+18,900
+189% +$1.87M 0.47% 61
2021
Q4
$998K Buy
10,000
+4,500
+82% +$474K 0.13% 91
2021
Q3
$572K Hold
5,500
0.08% 103
2021
Q2
$512K Hold
5,500
0.07% 105
2021
Q1
$462K Hold
5,500
0.06% 110
2020
Q4
$418K Hold
5,500
0.07% 101
2020
Q3
$308K Hold
5,500
0.06% 100
2020
Q2
$330K Hold
5,500
0.07% 91
2020
Q1
$283K Buy
+5,500
New +$402K 0.08% 98
2018
Q1
Sell
-1,000
Closed -$54K 93
2017
Q4
$54K Sell
1,000
-10,000
-91% -$541K 0.01% 92
2017
Q3
$624K Buy
11,000
+4,000
+57% +$218K 0.16% 72
2017
Q2
$390K Hold
7,000
0.1% 84
2017
Q1
$389K Buy
+7,000
New +$387K 0.1% 89
2015
Q3
Sell
-21,000
Closed -$1.13M 106
2015
Q2
$1.13M Hold
21,000
0.24% 65
2015
Q1
$1.19M Hold
21,000
0.25% 63
2014
Q4
$1.01M Buy
21,000
+1,000
+5% +$48.7K 0.21% 71
2014
Q3
$1.08M Hold
20,000
0.24% 70
2014
Q2
$1.28M Hold
20,000
0.27% 67
2014
Q1
$1.1M Buy
20,000
+5,000
+33% +$272K 0.23% 70
2013
Q4
$900K Hold
15,000
0.19% 81
2013
Q3
$880K Buy
+15,000
New +$837K 0.2% 74

Other funds holding CLH

Needham Investment Management's CLH Position: Q1 2026 in Review

Needham Investment Management held its Clean Harbors (CLH) position steady in Q1 2026 at 68,856 shares worth $19.7M. The position accounts for 1.01% of the portfolio, ranked #29.

Needham Investment Management first reported a position in CLH in Q3 2013 and has held it in 37 quarters since. 623 funds tracked by Wall St. Rank hold CLH as of Q1 2026.

  • Needham Investment Management held 68,856 shares of Clean Harbors worth $19.7M as of Q1 2026.
  • Needham Investment Management left its Clean Harbors share count unchanged in Q1 2026.
  • Clean Harbors made up 1.01% of Needham Investment Management's portfolio in Q1 2026, its #29 holding.
  • Needham Investment Management first reported a position in Clean Harbors in Q3 2013 and has held it in 37 quarters since.
  • 623 funds tracked by Wall St. Rank held Clean Harbors as of Q1 2026.

Based on Needham Investment Management's 13F filing for Q1 2026, filed 15 May 2026.