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EAM Investors’s Amprius Technologies AMPX Stock Holding History

EAM Investors’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
Q1 		$4.42M Buy
262,036
+25,226
+11% +$329K 0.51% 74
2025
Q4 		$1.87M Sell
236,810
-251,720
-52% -$2.88M 0.21% 165
2025
Q3 		$5.08M Buy
488,530
+277,278
+131% +$2.18M 0.58% 55
2025
Q2 		$889K Buy
+211,252
New +$594K 0.13% 172

Other funds holding AMPX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

EAM Investors's AMPX Position: Q1 2026 in Review

EAM Investors increased its Amprius Technologies (AMPX) stake by 11% in Q1 2026, buying an estimated $329K and bringing the position to 262,036 shares worth $4.42M. The position accounts for 0.51% of the portfolio, ranked #74.

EAM Investors first reported a position in AMPX in Q2 2025 and has held it in 4 quarters since. The position peaked at $5.08M in Q3 2025. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

  • EAM Investors held 262,036 shares of Amprius Technologies worth $4.42M as of Q1 2026.
  • EAM Investors bought 25,226 Amprius Technologies shares in Q1 2026, an estimated $329K.
  • Amprius Technologies made up 0.51% of EAM Investors's portfolio in Q1 2026, its #74 holding.
  • EAM Investors first reported a position in Amprius Technologies in Q2 2025 and has held it in 4 quarters since.
  • EAM Investors's Amprius Technologies position peaked at $5.08M in Q3 2025.
  • 245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

Based on EAM Investors's 13F filing for Q1 2026, filed 13 May 2026.