Driehaus Capital Management’s Aehr Test Systems AEHR Stock Holding History

Driehaus Capital 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
2026 Q2	$22.9M	Buy	+238,422	New	+$21.8M	0.13%	213
2024 Q1	–	Sell	-185,140	Closed	-$4.91M	–	382
2023 Q4	$4.91M	Sell	185,140 -1,266,206	-87%	-$36.9M	0.06%	268
2023 Q3	$66.3M	Buy	1,451,346 +102,524	+8%	+$4.75M	0.86%	23
2023 Q2	$55.6M	Buy	1,348,822 +314,973	+30%	+$10.3M	0.7%	30
2023 Q1	$32.1M	Buy	1,033,849 +142,233	+16%	+$4.58M	0.45%	57
2022 Q4	$17.9M	Buy	891,616 +610,425	+217%	+$13.1M	0.27%	130
2022 Q3	$3.96M	Buy	+281,191	New	+$3.78M	0.06%	286

Other funds holding AEHR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Driehaus Capital Management's AEHR Position: Q2 2026 in Review

Driehaus Capital Management opened a new position in Aehr Test Systems (AEHR) in Q2 2026: 238,422 shares worth $22.9M. The stake represents 0.13% of the portfolio and ranks #213 among its holdings. This is a return to the name: Driehaus Capital Management previously reported a position in AEHR as recently as Q4 2023.

Driehaus Capital Management first reported a position in AEHR in Q3 2022 and has held it in 7 quarters since. The position peaked at $66.3M in Q3 2023. 262 funds tracked by Wall St. Rank hold AEHR as of Q2 2026.

Driehaus Capital Management held 238,422 shares of Aehr Test Systems worth $22.9M as of Q2 2026.
Aehr Test Systems was a new Driehaus Capital Management position in Q2 2026.
Aehr Test Systems made up 0.13% of Driehaus Capital Management's portfolio in Q2 2026, its #213 holding.
Driehaus Capital Management first reported a position in Aehr Test Systems in Q3 2022 and has held it in 7 quarters since.
Driehaus Capital Management's Aehr Test Systems position peaked at $66.3M in Q3 2023.
262 funds tracked by Wall St. Rank held Aehr Test Systems as of Q2 2026.

Based on Driehaus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.