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 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 $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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 New York $124B AUM 33.93% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Oppenheimer & Co's AMPX Position: Q1 2026 in Review

Oppenheimer & Co reduced its Amprius Technologies (AMPX) stake by 6.7% in Q1 2026, selling an estimated $386K and leaving 412,509 shares worth $6.95M. The position accounts for 0.08% of the portfolio, ranked #260.

Oppenheimer & Co first reported a position in AMPX in Q4 2024 and has held it in 6 quarters since. 245 funds tracked by Wall St. Rank hold AMPX as of Q1 2026.

Oppenheimer & Co held 412,509 shares of Amprius Technologies worth $6.95M as of Q1 2026.
Oppenheimer & Co sold 29,581 Amprius Technologies shares in Q1 2026, an estimated $386K.
Amprius Technologies made up 0.08% of Oppenheimer & Co's portfolio in Q1 2026, its #260 holding.
Oppenheimer & Co first reported a position in Amprius Technologies in Q4 2024 and has held it in 6 quarters since.
245 funds tracked by Wall St. Rank held Amprius Technologies as of Q1 2026.

Based on Oppenheimer & Co's 13F filing for Q1 2026, filed 24 Apr 2026.