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John Overdeck’s Amprius Technologies AMPX Stock Holding History

John Overdeck’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 		$59.9M Buy
4,318,630
+812,555
+23% +$14.6M 0.04% 490
2026
Q1 		$59.1M Buy
3,506,075
+2,069,136
+144% +$27M 0.05% 432
2025
Q4 		$11.3M Sell
1,436,939
-316,638
-18% -$3.62M 0.02% 1039
2025
Q3 		$18.4M Buy
1,753,577
+341,969
+24% +$2.69M 0.03% 663
2025
Q2 		$5.94M Buy
1,411,608
+1,000,130
+243% +$2.81M 0.01% 1128
2025
Q1 		$1.1M Sell
411,478
-31,833
-7% -$93.9K ﹤0.01% 2118
2024
Q4 		$1.24M Buy
443,311
+338,524
+323% +$592K ﹤0.01% 2040
2024
Q3 		$116K Sell
104,787
-115,464
-52% -$127K ﹤0.01% 2883
2024
Q2 		$280K Buy
+220,251
New +$359K ﹤0.01% 2626

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
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
LP
LMR Partners London, United Kingdom $26.8B AUM 68.38% 1-Year Est. Return

John Overdeck's AMPX Position: Q2 2026 in Review

John Overdeck increased its Amprius Technologies (AMPX) stake by 23% in Q2 2026, buying an estimated $14.6M and bringing the position to 4,318,630 shares worth $59.9M. The position accounts for 0.04% of the portfolio, ranked #490.

John Overdeck first reported a position in AMPX in Q2 2024 and has held it in 9 quarters since. 261 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

  • John Overdeck held 4,318,630 shares of Amprius Technologies worth $59.9M as of Q2 2026.
  • John Overdeck bought 812,555 Amprius Technologies shares in Q2 2026, an estimated $14.6M.
  • Amprius Technologies made up 0.04% of John Overdeck's portfolio in Q2 2026, its #490 holding.
  • John Overdeck first reported a position in Amprius Technologies in Q2 2024 and has held it in 9 quarters since.
  • 261 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.