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Essex Investment Management’s Aehr Test Systems AEHR Stock Holding History

Essex Investment Management’s Portfolio AEHR Stock Details AEHR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-34,005
Closed -$1.02M – 307
2025
Q3 		$1.02M Buy
+34,005
New +$736K 0.16% 141
2024
Q1 		– Sell
-82,769
Closed -$2.2M – 307
2023
Q4 		$2.2M Sell
82,769
-6,284
-7% -$183K 0.43% 87
2023
Q3 		$4.07M Sell
89,053
-17,117
-16% -$793K 0.66% 36
2023
Q2 		$4.38M Buy
106,170
+12,378
+13% +$406K 0.61% 44
2023
Q1 		$2.91M Sell
93,792
-54,528
-37% -$1.76M 0.42% 81
2022
Q4 		$2.98M Sell
148,320
-31,772
-18% -$680K 0.46% 69
2022
Q3 		$2.54M Buy
180,092
+5,008
+3% +$67.4K 0.41% 76
2022
Q2 		$1.31M Buy
175,084
+7,061
+4% +$58.7K 0.21% 143
2022
Q1 		$1.71M Buy
+168,023
New +$2.15M 0.21% 144
2020
Q4 		– Sell
-236,664
Closed -$329K – 478
2020
Q3 		$329K Sell
236,664
-138,835
-37% -$258K 0.05% 327
2020
Q2 		$734K Buy
375,499
+48,351
+15% +$83.3K 0.12% 222
2020
Q1 		$546K Buy
327,148
+47,756
+17% +$92.1K 0.11% 211
2019
Q4 		$559K Buy
279,392
+9,954
+4% +$18.6K 0.07% 299
2019
Q3 		$482K Hold
269,438
– – 0.07% 295
2019
Q2 		$445K Buy
269,438
+113,326
+73% +$187K 0.06% 312
2019
Q1 		$215K Buy
156,112
+14,358
+10% +$19.4K 0.03% 335
2018
Q4 		$200K Sell
141,754
-10,712
-7% -$20K 0.03% 332
2018
Q3 		$338K Hold
152,466
– – 0.04% 333
2018
Q2 		$358K Hold
152,466
– – 0.04% 315
2018
Q1 		$343K Buy
+152,466
New +$386K 0.05% 294
2015
Q1 		– Sell
-21,662
Closed -$55K – 316
2014
Q4 		$55K Sell
21,662
-2,635
-11% -$6.45K 0.01% 321
2014
Q3 		$61K Buy
24,297
+5,044
+26% +$13.2K 0.01% 343
2014
Q2 		$41K Hold
19,253
– – 0.01% 350
2014
Q1 		$55K Hold
19,253
– – 0.01% 340
2013
Q4 		$59K Buy
+19,253
New +$51.6K 0.01% 354

Other funds holding AEHR

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 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
AIC
AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
HFF
Halter Ferguson Financial Carmel, Indiana $617M AUM 69.99% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
NCGI
Next Century Growth Investors Plymouth, Minnesota $1.38B AUM 102.34% 1-Year Est. Return

Essex Investment Management's AEHR Position: Q4 2025 in Review

Essex Investment Management sold out of Aehr Test Systems (AEHR) in Q4 2025, closing a stake of 34,005 shares — an estimated $1.02M sold.

Essex Investment Management first reported a position in AEHR in Q4 2013 and held it in 25 quarters. The position peaked at $4.38M in Q2 2023. 150 funds tracked by Wall St. Rank hold AEHR as of Q4 2025.

  • Essex Investment Management reported no remaining Aehr Test Systems position as of Q4 2025 after selling out during the quarter.
  • Essex Investment Management sold 34,005 Aehr Test Systems shares in Q4 2025, an estimated $1.02M.
  • Essex Investment Management first reported a position in Aehr Test Systems in Q4 2013 and held it in 25 quarters.
  • Essex Investment Management's Aehr Test Systems position peaked at $4.38M in Q2 2023.
  • 150 funds tracked by Wall St. Rank held Aehr Test Systems as of Q4 2025.

Based on Essex Investment Management's 13F filing for Q4 2025, filed 13 Feb 2026.