Marshall Wace
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Marshall Wace’s Amprius Technologies AMPX Stock Holding History

Marshall Wace’s Portfolio AMPX Stock Details AMPX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.82M Sell
131,200
-1,096,399
-89% -$19.6M ﹤0.01% 1914
2026
Q1 		$20.7M Buy
+1,227,599
New +$16M 0.02% 692
2025
Q4 		– Sell
-30,368
Closed -$319K – 2926
2025
Q3 		$319K Sell
30,368
-1,075,045
-97% -$8.46M ﹤0.01% 2402
2025
Q2 		$4.65M Buy
1,105,413
+153,476
+16% +$432K 0.01% 1172
2025
Q1 		$2.55M Buy
951,937
+898,302
+1,675% +$2.65M ﹤0.01% 1359
2024
Q4 		$150K Buy
+53,635
New +$93.7K ﹤0.01% 2397
2023
Q3 		– Sell
-10,088
Closed -$72.4K – 2157
2023
Q2 		$72.4K Buy
+10,088
New +$86.6K ﹤0.01% 2356

Other funds holding AMPX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
JAM
Jupiter Asset Management London, United Kingdom $20.2B AUM 29.18% 1-Year Est. Return

Marshall Wace's AMPX Position: Q2 2026 in Review

Marshall Wace reduced its Amprius Technologies (AMPX) stake by 89% in Q2 2026, selling an estimated $19.6M and leaving 131,200 shares worth $1.82M. The position accounts for ﹤0.01% of the portfolio, ranked #1914.

Marshall Wace first reported a position in AMPX in Q2 2023 and has held it in 7 quarters since. The position peaked at $20.7M in Q1 2026. 262 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

  • Marshall Wace held 131,200 shares of Amprius Technologies worth $1.82M as of Q2 2026.
  • Marshall Wace sold 1,096,399 Amprius Technologies shares in Q2 2026, an estimated $19.6M.
  • Amprius Technologies made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1914 holding.
  • Marshall Wace first reported a position in Amprius Technologies in Q2 2023 and has held it in 7 quarters since.
  • Marshall Wace's Amprius Technologies position peaked at $20.7M in Q1 2026.
  • 262 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

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