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PDT Partners’s Clean Harbors CLH Stock Holding History

PDT Partners’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
2025
Q1 		– Sell
-2,210
Closed -$509K – 762
2024
Q4 		$509K Sell
2,210
-396
-15% -$98.4K 0.05% 478
2024
Q3 		$630K Sell
2,606
-14
-0.5% -$3.29K 0.06% 460
2024
Q2 		$593K Buy
2,620
+1,114
+74% +$234K 0.06% 436
2024
Q1 		$303K Buy
+1,506
New +$271K 0.03% 531
2022
Q3 		– Sell
-4,654
Closed -$408K – 871
2022
Q2 		$408K Buy
4,654
+2,638
+131% +$255K 0.04% 655
2022
Q1 		$225K Sell
2,016
-4,914
-71% -$485K 0.02% 792
2021
Q4 		$691K Buy
+6,930
New +$730K 0.05% 448
2021
Q3 		– Sell
-2,641
Closed -$246K – 790
2021
Q2 		$246K Sell
2,641
-607
-19% -$55.2K 0.02% 655
2021
Q1 		$273K Buy
+3,248
New +$273K 0.02% 640
2020
Q2 		– Sell
-10,000
Closed -$513K – 692
2020
Q1 		$513K Buy
+10,000
New +$730K 0.04% 364
2017
Q4 		– Sell
-32,800
Closed -$1.86M – 534
2017
Q3 		$1.86M Buy
32,800
+300
+0.9% +$16.3K 0.06% 284
2017
Q2 		$1.81M Sell
32,500
-30,300
-48% -$1.74M 0.07% 268
2017
Q1 		$3.49M Hold
62,800
– – 0.18% 175
2016
Q4 		$3.5M Hold
62,800
– – 0.23% 181
2016
Q3 		$3.01M Hold
62,800
– – 0.18% 184
2016
Q2 		$3.27M Buy
+62,800
New +$3.14M 0.26% 151
2015
Q4 		– Sell
-26,418
Closed -$1.16M – 492
2015
Q3 		$1.16M Buy
+26,418
New +$1.31M 0.03% 671
2015
Q2 		– Sell
-11,141
Closed -$633K – 1365
2015
Q1 		$633K Buy
+11,141
New +$577K 0.02% 933
2014
Q4 		– Sell
-22,370
Closed -$1.21M – 698
2014
Q3 		$1.21M Buy
+22,370
New +$1.32M 0.03% 570

Other funds holding CLH

Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return
SCM
Snyder Capital Management San Francisco, California $5.79B AUM 33.56% 1-Year Est. Return
Select Equity Group
Select Equity Group New York $20.2B AUM 17.52% 1-Year Est. Return
Bessemer Group
Bessemer Group Woodbridge, New Jersey $72.7B AUM 39.36% 1-Year Est. Return

PDT Partners's CLH Position: Q1 2025 in Review

PDT Partners sold out of Clean Harbors (CLH) in Q1 2025, closing a stake of 2,210 shares — an estimated $509K sold.

PDT Partners first reported a position in CLH in Q3 2014 and held it in 19 quarters. The position peaked at $3.5M in Q4 2016. 563 funds tracked by Wall St. Rank hold CLH as of Q1 2025.

  • PDT Partners reported no remaining Clean Harbors position as of Q1 2025 after selling out during the quarter.
  • PDT Partners sold 2,210 Clean Harbors shares in Q1 2025, an estimated $509K.
  • PDT Partners first reported a position in Clean Harbors in Q3 2014 and held it in 19 quarters.
  • PDT Partners's Clean Harbors position peaked at $3.5M in Q4 2016.
  • 563 funds tracked by Wall St. Rank held Clean Harbors as of Q1 2025.

Based on PDT Partners's 13F filing for Q1 2025, filed 15 May 2025.