Marshall Wace’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 | $12.8M | Sell |
44,477
-20,104
| -31% | -$5.49M | 0.01% | 868 |
|
|
2025
Q4 | $15.1M | Buy |
64,581
+61,451
| +1,963% | +$14M | 0.01% | 733 |
|
|
2025
Q3 | $727K | Sell |
3,130
-190,045
| -98% | -$45M | ﹤0.01% | 2082 |
|
|
2025
Q2 | $44.7M | Buy |
193,175
+7,959
| +4% | +$1.74M | 0.05% | 320 |
|
|
2025
Q1 | $36.5M | Sell |
185,216
-146,788
| -44% | -$32.1M | 0.05% | 352 |
|
|
2024
Q4 | $76.4M | Sell |
332,004
-6,326
| -2% | -$1.57M | 0.09% | 205 |
|
|
2024
Q3 | $81.8M | Sell |
338,330
-198,944
| -37% | -$46.8M | 0.1% | 181 |
|
|
2024
Q2 | $122M | Buy |
537,274
+90,756
| +20% | +$19M | 0.16% | 113 |
|
|
2024
Q1 | $89.9M | Sell |
446,518
-1,464
| -0.3% | -$263K | 0.14% | 143 |
|
|
2023
Q4 | $78.2M | Sell |
447,982
-114,809
| -20% | -$18.8M | 0.13% | 150 |
|
|
2023
Q3 | $94.2M | Sell |
562,791
-113,464
| -17% | -$19.1M | 0.19% | 103 |
|
|
2023
Q2 | $111M | Sell |
676,255
-38,877
| -5% | -$5.68M | 0.22% | 92 |
|
|
2023
Q1 | $102M | Buy |
715,132
+110,769
| +18% | +$14.4M | 0.22% | 102 |
|
|
2022
Q4 | $69M | Sell |
604,363
-119,371
| -16% | -$13.9M | 0.16% | 140 |
|
|
2022
Q3 | $79.6M | Sell |
723,734
-165,173
| -19% | -$17.7M | 0.17% | 115 |
|
|
2022
Q2 | $77.9M | Sell |
888,907
-478,358
| -35% | -$46.2M | 0.16% | 129 |
|
|
2022
Q1 | $153M | Sell |
1,367,265
-10,395
| -0.8% | -$1.03M | 0.29% | 60 |
|
|
2021
Q4 | $137M | Buy |
+1,377,660
| New | +$145M | 0.25% | 69 |
|
|
2021
Q2 | – | Sell |
-15,866
| Closed | -$1.33M | – | 2699 |
|
|
2021
Q1 | $1.33M | Sell |
15,866
-21,648
| -58% | -$1.82M | 0.01% | 1516 |
|
|
2020
Q4 | $2.85M | Sell |
37,514
-711
| -2% | -$47.6K | 0.02% | 794 |
|
|
2020
Q3 | $2.14M | Sell |
38,225
-14,094
| -27% | -$835K | 0.01% | 786 |
|
|
2020
Q2 | $3.14M | Buy |
52,319
+6,671
| +15% | +$372K | 0.02% | 619 |
|
|
2020
Q1 | $2.34M | Buy |
45,648
+34,481
| +309% | +$2.52M | 0.02% | 580 |
|
|
2019
Q4 | $958K | Buy |
11,167
+2,682
| +32% | +$218K | 0.01% | 997 |
|
|
2019
Q3 | $655K | Sell |
8,485
-14,431
| -63% | -$1.07M | 0.01% | 1039 |
|
|
2019
Q2 | $1.63M | Buy |
+22,916
| New | +$1.6M | 0.01% | 825 |
|
|
2019
Q1 | – | Sell |
-2,693
| Closed | -$133K | – | 1755 |
|
|
2018
Q4 | $133K | Buy |
+2,693
| New | +$168K | ﹤0.01% | 1328 |
|
|
2018
Q1 | – | Sell |
-6,832
| Closed | -$370K | – | 565 |
|
|
2017
Q4 | $370K | Buy |
6,832
+2,003
| +41% | +$108K | 0.02% | 334 |
|
|
2017
Q3 | $275K | Buy |
+4,829
| New | +$263K | 0.01% | 314 |
|
|
2015
Q2 | – | Sell |
-178,429
| Closed | -$10.1M | – | 918 |
|
|
2015
Q1 | $10.1M | Buy |
178,429
+173,445
| +3,480% | +$8.98M | 0.13% | 196 |
|
|
2014
Q4 | $239K | Buy |
4,984
+2,561
| +106% | +$125K | ﹤0.01% | 733 |
|
|
2014
Q3 | $131K | Buy |
+2,423
| New | +$142K | ﹤0.01% | 814 |
|
Other funds holding CLH
VCM
VPM
LPC
DCP
Marshall Wace's CLH Position: Q1 2026 in Review
Marshall Wace reduced its Clean Harbors (CLH) stake by 31% in Q1 2026, selling an estimated $5.49M and leaving 44,477 shares worth $12.8M. The position accounts for 0.01% of the portfolio, ranked #868.
Marshall Wace first reported a position in CLH in Q3 2014 and has held it in 32 quarters since. The position peaked at $153M in Q1 2022. 623 funds tracked by Wall St. Rank hold CLH as of Q1 2026.
- Marshall Wace held 44,477 shares of Clean Harbors worth $12.8M as of Q1 2026.
- Marshall Wace sold 20,104 Clean Harbors shares in Q1 2026, an estimated $5.49M.
- Clean Harbors made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #868 holding.
- Marshall Wace first reported a position in Clean Harbors in Q3 2014 and has held it in 32 quarters since.
- Marshall Wace's Clean Harbors position peaked at $153M in Q1 2022.
- 623 funds tracked by Wall St. Rank held Clean Harbors as of Q1 2026.
Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.