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PDT Partners’s Energy Recovery ERII Stock Holding History

PDT Partners’s Portfolio ERII Stock Details ERII Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-12,400
Closed -$167K – 556
2025
Q4 		$167K Hold
12,400
– – 0.01% 523
2025
Q3 		$191K Sell
12,400
-5
-0% -$70 0.01% 548
2025
Q2 		$159K Buy
+12,405
New +$168K 0.01% 651
2022
Q4 		– Sell
-27,402
Closed -$596K – 709
2022
Q3 		$596K Sell
27,402
-23,612
-46% -$532K 0.09% 385
2022
Q2 		$991K Sell
51,014
-5,486
-10% -$106K 0.09% 398
2022
Q1 		$1.14M Buy
56,500
+5,494
+11% +$107K 0.1% 331
2021
Q4 		$1.1M Buy
51,006
+6
+0% +$126 0.08% 345
2021
Q3 		$971K Hold
51,000
– – 0.07% 348
2021
Q2 		$1.16M Buy
51,000
+30,672
+151% +$605K 0.08% 349
2021
Q1 		$373K Sell
20,328
-8,377
-29% -$134K 0.03% 554
2020
Q4 		$392K Buy
28,705
+4,285
+18% +$45.7K 0.03% 494
2020
Q3 		$200K Sell
24,420
-7,980
-25% -$64K 0.01% 630
2020
Q2 		$246K Buy
32,400
+14,000
+76% +$111K 0.02% 562
2020
Q1 		$137K Sell
18,400
-4,200
-19% -$39.8K 0.01% 594
2019
Q4 		$221K Sell
22,600
-4,662
-17% -$43K 0.01% 625
2019
Q3 		$253K Buy
27,262
+7,162
+36% +$72.2K 0.02% 390
2019
Q2 		$209K Sell
20,100
-4,300
-18% -$42.3K 0.01% 362
2019
Q1 		$213K Sell
24,400
-8,925
-27% -$71.1K 0.01% 387
2018
Q4 		$224K Sell
33,325
-387
-1% -$3.05K 0.01% 391
2018
Q3 		$302K Sell
33,712
-7,386
-18% -$65.3K 0.01% 404
2018
Q2 		$332K Buy
+41,098
New +$346K 0.01% 437
2016
Q2 		– Sell
-15,876
Closed -$164K – 477
2016
Q1 		$164K Buy
+15,876
New +$116K 0.01% 522
2013
Q4 		– Sell
-11,700
Closed -$85K – 778
2013
Q3 		$85K Buy
+11,700
New +$60.8K ﹤0.01% 1455

Other funds holding ERII

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Amundi
Amundi Paris, France $416B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fidelity International
Fidelity International Hamilton, Bermuda $139B AUM 29.06% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $480B AUM 42.84% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

PDT Partners's ERII Position: Q1 2026 in Review

PDT Partners sold out of Energy Recovery (ERII) in Q1 2026, closing a stake of 12,400 shares — an estimated $167K sold.

PDT Partners first reported a position in ERII in Q3 2013 and held it in 23 quarters. The position peaked at $1.16M in Q2 2021. 197 funds tracked by Wall St. Rank hold ERII as of Q1 2026.

  • PDT Partners reported no remaining Energy Recovery position as of Q1 2026 after selling out during the quarter.
  • PDT Partners sold 12,400 Energy Recovery shares in Q1 2026, an estimated $167K.
  • PDT Partners first reported a position in Energy Recovery in Q3 2013 and held it in 23 quarters.
  • PDT Partners's Energy Recovery position peaked at $1.16M in Q2 2021.
  • 197 funds tracked by Wall St. Rank held Energy Recovery as of Q1 2026.

Based on PDT Partners's 13F filing for Q1 2026, filed 15 May 2026.