JY
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Jeff Yass’s Amprius Technologies AMPX Stock Holding History

Jeff Yass’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 		$15.2M Buy
1,100,269
+1,011,099
+1,134% +$18.1M ﹤0.01% 2774
2026
Q1 		$1.5M Sell
89,170
-1,602,330
-95% -$20.9M ﹤0.01% 6870
2025
Q4 		$13.3M Buy
1,691,500
+786,030
+87% +$8.99M ﹤0.01% 2688
2025
Q3 		$9.53M Buy
905,470
+28,142
+3% +$221K ﹤0.01% 3103
2025
Q2 		$3.69M Buy
877,328
+54,168
+7% +$152K ﹤0.01% 4551
2025
Q1 		$2.21M Buy
823,160
+155,239
+23% +$458K ﹤0.01% 5301
2024
Q4 		$1.87M Buy
667,921
+402,351
+152% +$703K ﹤0.01% 5469
2024
Q3 		$295K Buy
265,570
+114,922
+76% +$127K ﹤0.01% 9636
2024
Q2 		$191K Buy
+150,648
New +$246K ﹤0.01% 10424
2024
Q1 		– Sell
-18,586
Closed -$69K – 12089
2023
Q4 		$98.3K Buy
18,586
+29
+0.2% +$109 ﹤0.01% 11348
2023
Q3 		$88K Buy
+18,557
New +$109K ﹤0.01% 11018

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

Jeff Yass's AMPX Position: Q2 2026 in Review

Jeff Yass increased its Amprius Technologies (AMPX) stake by 1,134% in Q2 2026, buying an estimated $18.1M and bringing the position to 1,100,269 shares worth $15.2M. The position accounts for ﹤0.01% of the portfolio, ranked #2774.

Jeff Yass first reported a position in AMPX in Q3 2023 and has held it in 11 quarters since. 262 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

  • Jeff Yass held 1,100,269 shares of Amprius Technologies worth $15.2M as of Q2 2026.
  • Jeff Yass bought 1,011,099 Amprius Technologies shares in Q2 2026, an estimated $18.1M.
  • Amprius Technologies made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #2774 holding.
  • Jeff Yass first reported a position in Amprius Technologies in Q3 2023 and has held it in 11 quarters since.
  • 262 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.