Oppenheimer & Co’s Amprius Technologies AMPX Stock Holding History

Oppenheimer & Co’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	$7M	Buy	504,746 +92,237	+22%	+$1.65M	0.07%	277
2026 Q1	$6.95M	Sell	412,509 -29,581	-7%	-$386K	0.08%	260
2025 Q4	$3.49M	Buy	442,090 +142,751	+48%	+$1.63M	0.05%	385
2025 Q3	$3.15M	Sell	299,339 -149,858	-33%	-$1.18M	0.04%	472
2025 Q2	$1.89M	Sell	449,197 -42,181	-9%	-$119K	0.03%	597
2025 Q1	$1.32M	Buy	491,378 +374,228	+319%	+$1.1M	0.02%	683
2024 Q4	$328K	Buy	+117,150	New	+$205K	﹤0.01%	1223

Other funds holding AMPX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

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

Oppenheimer & Co's AMPX Position: Q2 2026 in Review

Oppenheimer & Co increased its Amprius Technologies (AMPX) stake by 22% in Q2 2026, buying an estimated $1.65M and bringing the position to 504,746 shares worth $7M. The position accounts for 0.07% of the portfolio, ranked #277.

Oppenheimer & Co first reported a position in AMPX in Q4 2024 and has held it in 7 quarters since. 262 funds tracked by Wall St. Rank hold AMPX as of Q2 2026.

Oppenheimer & Co held 504,746 shares of Amprius Technologies worth $7M as of Q2 2026.
Oppenheimer & Co bought 92,237 Amprius Technologies shares in Q2 2026, an estimated $1.65M.
Amprius Technologies made up 0.07% of Oppenheimer & Co's portfolio in Q2 2026, its #277 holding.
Oppenheimer & Co first reported a position in Amprius Technologies in Q4 2024 and has held it in 7 quarters since.
262 funds tracked by Wall St. Rank held Amprius Technologies as of Q2 2026.

Based on Oppenheimer & Co's 13F filing for Q2 2026, filed 3 Aug 2026.