Marshall Wace
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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
Q2 		$36.8M Buy
382,738
+372,527
+3,648% +$34M 0.03% 482
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
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Marshall Wace's AEHR Position: Q2 2026 in Review

Marshall Wace increased its Aehr Test Systems (AEHR) stake by 3,648% in Q2 2026, buying an estimated $34M and bringing the position to 382,738 shares worth $36.8M. The position accounts for 0.03% of the portfolio, ranked #482.

Marshall Wace first reported a position in AEHR in Q3 2022 and has held it in 7 quarters since. 262 funds tracked by Wall St. Rank hold AEHR as of Q2 2026.

  • Marshall Wace held 382,738 shares of Aehr Test Systems worth $36.8M as of Q2 2026.
  • Marshall Wace bought 372,527 Aehr Test Systems shares in Q2 2026, an estimated $34M.
  • Aehr Test Systems made up 0.03% of Marshall Wace's portfolio in Q2 2026, its #482 holding.
  • Marshall Wace first reported a position in Aehr Test Systems in Q3 2022 and has held it in 7 quarters since.
  • 262 funds tracked by Wall St. Rank held Aehr Test Systems as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.