Marshall Wace’s Aehr Test Systems AEHR Stock Holding History

Marshall Wace’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 Q1	$379K	Buy	+10,211	New	+$327K	﹤0.01%	2572
2024 Q4	–	Sell	-662,125	Closed	-$8.51M	–	2537
2024 Q3	$8.51M	Buy	+662,125	New	+$9.57M	0.01%	816
2024 Q1	–	Sell	-93,227	Closed	-$2.47M	–	2394
2023 Q4	$2.47M	Buy	+93,227	New	+$2.72M	﹤0.01%	1134
2023 Q2	–	Sell	-87,601	Closed	-$2.72M	–	2411
2023 Q1	$2.72M	Buy	87,601 +55,110	+170%	+$1.78M	0.01%	1289
2022 Q4	$653K	Buy	32,491 +8,376	+35%	+$179K	﹤0.01%	2262
2022 Q3	$340K	Buy	+24,115	New	+$325K	﹤0.01%	2896

Other funds holding AEHR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

AIC

AWM Investment Company New York $903M AUM 163.47% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

NCGI

Next Century Growth Investors Plymouth, Minnesota $1.38B AUM 102.34% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Marshall Wace's AEHR Position: Q1 2026 in Review

Marshall Wace opened a new position in Aehr Test Systems (AEHR) in Q1 2026: 10,211 shares worth $379K. The stake represents ﹤0.01% of the portfolio and ranks #2572 among its holdings. This is a return to the name: Marshall Wace previously reported a position in AEHR as recently as Q3 2024.

Marshall Wace first reported a position in AEHR in Q3 2022 and has held it in 6 quarters since. The position peaked at $8.51M in Q3 2024. 191 funds tracked by Wall St. Rank hold AEHR as of Q1 2026.

Marshall Wace held 10,211 shares of Aehr Test Systems worth $379K as of Q1 2026.
Aehr Test Systems was a new Marshall Wace position in Q1 2026.
Aehr Test Systems made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2572 holding.
Marshall Wace first reported a position in Aehr Test Systems in Q3 2022 and has held it in 6 quarters since.
Marshall Wace's Aehr Test Systems position peaked at $8.51M in Q3 2024.
191 funds tracked by Wall St. Rank held Aehr Test Systems as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.