Essex Investment Management’s Energy Recovery ERII Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$1.33M Sell
132,322
-2,778
-2% -$36.4K 0.21% 131
2025
Q4
$1.82M Sell
135,100
-2,786
-2% -$42.2K 0.28% 120
2025
Q3
$2.13M Sell
137,886
-8,018
-5% -$113K 0.33% 113
2025
Q2
$1.86M Sell
145,904
-33,660
-19% -$456K 0.34% 114
2025
Q1
$2.85M Sell
179,564
-39,767
-18% -$605K 0.6% 59
2024
Q4
$3.22M Sell
219,331
-18,095
-8% -$310K 0.58% 67
2024
Q3
$4.13M Sell
237,426
-7,262
-3% -$115K 0.72% 48
2024
Q2
$3.25M Sell
244,688
-11,679
-5% -$161K 0.61% 58
2024
Q1
$4.05M Sell
256,367
-51,183
-17% -$815K 0.8% 38
2023
Q4
$5.79M Sell
307,550
-70,684
-19% -$1.31M 1.14% 16
2023
Q3
$8.02M Buy
378,234
+87,690
+30% +$2.34M 1.31% 7
2023
Q2
$8.12M Sell
290,544
-163,440
-36% -$4.08M 1.13% 11
2023
Q1
$10.5M Sell
453,984
-4,576
-1% -$101K 1.52% 7
2022
Q4
$9.4M Buy
458,560
+28
+0% +$613 1.46% 8
2022
Q3
$9.97M Buy
458,532
+19,124
+4% +$431K 1.59% 7
2022
Q2
$8.53M Sell
439,408
-9,730
-2% -$189K 1.38% 9
2022
Q1
$9.05M Buy
449,138
+57,357
+15% +$1.12M 1.13% 12
2021
Q4
$8.42M Buy
391,781
+7,747
+2% +$162K 0.96% 22
2021
Q3
$7.31M Buy
384,034
+99,790
+35% +$2.03M 0.9% 21
2021
Q2
$6.47M Sell
284,244
-93,139
-25% -$1.84M 0.75% 28
2021
Q1
$6.92M Buy
377,383
+16,419
+5% +$263K 0.84% 19
2020
Q4
$4.92M Buy
360,964
+214,861
+147% +$2.29M 0.61% 37
2020
Q3
$1.2M Buy
146,103
+4,551
+3% +$36.5K 0.17% 187
2020
Q2
$1.07M Sell
141,552
-372,630
-72% -$2.95M 0.18% 187
2020
Q1
$3.83M Buy
514,182
+152,940
+42% +$1.45M 0.77% 22
2019
Q4
$3.54M Buy
361,242
+38,310
+12% +$353K 0.43% 59
2019
Q3
$2.99M Buy
322,932
+29,334
+10% +$296K 0.43% 61
2019
Q2
$3.06M Buy
293,598
+65,812
+29% +$648K 0.42% 59
2019
Q1
$1.99M Buy
227,786
+116,000
+104% +$924K 0.29% 103
2018
Q4
$752K Sell
111,786
-206,598
-65% -$1.63M 0.12% 225
2018
Q3
$2.85M Buy
318,384
+2,464
+0.8% +$21.8K 0.33% 82
2018
Q2
$2.55M Sell
315,920
-5,623
-2% -$47.4K 0.32% 98
2018
Q1
$2.64M Buy
321,543
+17,999
+6% +$146K 0.35% 85
2017
Q4
$2.66M Buy
303,544
+19,444
+7% +$177K 0.35% 79
2017
Q3
$2.24M Sell
284,100
-16,662
-6% -$119K 0.31% 98
2017
Q2
$2.49M Sell
300,762
-1,779
-0.6% -$14.2K 0.36% 85
2017
Q1
$2.52M Sell
302,541
-44,797
-13% -$416K 0.39% 62
2016
Q4
$3.6M Sell
347,338
-2,841
-0.8% -$34.1K 0.59% 38
2016
Q3
$5.6M Buy
+350,179
New +$4.26M 0.9% 28
2015
Q1
Sell
-85,235
Closed -$449K 330
2014
Q4
$449K Buy
85,235
+46,493
+120% +$211K 0.07% 239
2014
Q3
$137K Buy
38,742
+738
+2% +$3.22K 0.02% 332
2014
Q2
$187K Sell
38,004
-163,913
-81% -$846K 0.03% 335
2014
Q1
$1.07M Buy
201,917
+34,582
+21% +$170K 0.16% 188
2013
Q4
$929K Sell
167,335
-42,071
-20% -$236K 0.13% 203
2013
Q3
$1.52M Sell
209,406
-28,577
-12% -$149K 0.23% 122
2013
Q2
$983K Buy
+237,983
New +$907K 0.17% 155

Other funds holding ERII

Essex Investment Management's ERII Position: Q1 2026 in Review

Essex Investment Management reduced its Energy Recovery (ERII) stake by 2.1% in Q1 2026, selling an estimated $36.4K and leaving 132,322 shares worth $1.33M. The position accounts for 0.21% of the portfolio, ranked #131.

Essex Investment Management first reported a position in ERII in Q2 2013 and has held it in 46 quarters since. The position peaked at $10.5M in Q1 2023. 197 funds tracked by Wall St. Rank hold ERII as of Q1 2026.

  • Essex Investment Management held 132,322 shares of Energy Recovery worth $1.33M as of Q1 2026.
  • Essex Investment Management sold 2,778 Energy Recovery shares in Q1 2026, an estimated $36.4K.
  • Energy Recovery made up 0.21% of Essex Investment Management's portfolio in Q1 2026, its #131 holding.
  • Essex Investment Management first reported a position in Energy Recovery in Q2 2013 and has held it in 46 quarters since.
  • Essex Investment Management's Energy Recovery position peaked at $10.5M in Q1 2023.
  • 197 funds tracked by Wall St. Rank held Energy Recovery as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.