Amprius Technologies, Inc. $AMPX Shares Purchased by Oppenheimer & Co. Inc.

Key Points

• Oppenheimer increased its stake in Amprius by 47.7% to 442,090 shares (about $3.49M), and other institutions including Vanguard, BNP Paribas, Voloridge and Invesco also significantly built positions, signaling notable institutional interest.
• Insiders have been net sellers, offloading 2,539,829 shares worth roughly $42.3M over the past three months — including large director sales by Wen Hsuan Hsieh and Kang Sun — though insiders still own about 12.8% of the company.
• Amprius beat quarterly expectations (EPS -$0.01 vs. -$0.04; revenue $25.23M vs. $22.91M) but remains unprofitable and guided FY2026 EPS to -0.060; analysts hold a consensus "Moderate Buy" with a target near $19.75 while the stock trades around $20.83.

Oppenheimer & Co. Inc. increased its holdings in shares of Amprius Technologies, Inc. (NYSE:AMPX - Free Report) by 47.7% during the fourth quarter, according to its most recent disclosure with the Securities and Exchange Commission (SEC). The firm owned 442,090 shares of the company's stock after acquiring an additional 142,751 shares during the period. Oppenheimer & Co. Inc. owned approximately 0.34% of Amprius Technologies worth $3,488,000 as of its most recent SEC filing.

A number of other institutional investors also recently bought and sold shares of AMPX. Voloridge Investment Management LLC purchased a new stake in Amprius Technologies during the third quarter worth $19,737,000. BNP Paribas Financial Markets boosted its position in shares of Amprius Technologies by 1,117.9% in the 3rd quarter. BNP Paribas Financial Markets now owns 1,943,905 shares of the company's stock worth $20,450,000 after buying an additional 1,784,291 shares in the last quarter. Vanguard Group Inc. boosted its position in shares of Amprius Technologies by 37.0% in the 3rd quarter. Vanguard Group Inc. now owns 6,512,620 shares of the company's stock worth $68,513,000 after buying an additional 1,757,395 shares in the last quarter. Invesco Ltd. grew its stake in Amprius Technologies by 113.3% in the 3rd quarter. Invesco Ltd. now owns 2,379,384 shares of the company's stock valued at $25,031,000 after acquiring an additional 1,263,846 shares during the last quarter. Finally, Stephens Investment Management Group LLC purchased a new position in Amprius Technologies during the 3rd quarter valued at about $11,392,000. 5.04% of the stock is currently owned by hedge funds and other institutional investors.

Amprius Technologies Stock Down 0.2%

Shares of NYSE:AMPX opened at $20.83 on Monday. Amprius Technologies, Inc. has a 52-week low of $2.16 and a 52-week high of $22.80. The stock's fifty day simple moving average is $16.95 and its 200-day simple moving average is $13.10. The company has a market capitalization of $2.85 billion, a P/E ratio of -61.27 and a beta of 2.20.

Amprius Technologies (NYSE:AMPX - Get Free Report) last issued its quarterly earnings data on Wednesday, March 4th. The company reported ($0.01) earnings per share (EPS) for the quarter, beating the consensus estimate of ($0.04) by $0.03. Amprius Technologies had a negative return on equity of 24.29% and a negative net margin of 60.30%.The business had revenue of $25.23 million for the quarter, compared to the consensus estimate of $22.91 million. Amprius Technologies has set its FY 2026 guidance at --0.060 EPS. On average, sell-side analysts anticipate that Amprius Technologies, Inc. will post -0.03 earnings per share for the current year.

Insider Buying and Selling

In other news, Director Wen Hsuan Hsieh sold 413,146 shares of the company's stock in a transaction on Thursday, March 12th. The stock was sold at an average price of $18.44, for a total value of $7,618,412.24. Following the sale, the director directly owned 44,444 shares in the company, valued at $819,547.36. This represents a 90.29% decrease in their ownership of the stock. The sale was disclosed in a legal filing with the Securities & Exchange Commission, which is available through the SEC website. Also, Director Kang Sun sold 1,500,000 shares of the company's stock in a transaction on Wednesday, April 1st. The shares were sold at an average price of $15.91, for a total value of $23,865,000.00. Following the completion of the sale, the director owned 1,342,400 shares in the company, valued at $21,357,584. This represents a 52.77% decrease in their ownership of the stock. Additional details regarding this sale are available in the official SEC disclosure. Insiders have sold 2,539,829 shares of company stock valued at $42,323,376 over the last three months. Insiders own 12.80% of the company's stock.

Analysts Set New Price Targets

A number of equities analysts have issued reports on AMPX shares. Weiss Ratings restated a "sell (e+)" rating on shares of Amprius Technologies in a research report on Monday, April 20th. Roth Mkm restated a "buy" rating and set a $20.00 target price (up from $16.00) on shares of Amprius Technologies in a research report on Friday, March 6th. William Blair restated an "outperform" rating on shares of Amprius Technologies in a research report on Friday, March 6th. B. Riley Financial lifted their target price on shares of Amprius Technologies from $16.00 to $22.00 and gave the stock a "buy" rating in a research report on Monday, March 9th. Finally, Cantor Fitzgerald lifted their target price on shares of Amprius Technologies from $16.00 to $20.00 and gave the stock an "overweight" rating in a research report on Friday, March 6th. Eight analysts have rated the stock with a Buy rating and one has issued a Sell rating to the company. According to MarketBeat.com, Amprius Technologies has a consensus rating of "Moderate Buy" and a consensus target price of $19.75.

Amprius Technologies Profile

Amprius Technologies, Inc NYSE: AMPX is a U.S.-based developer of high-energy-density lithium-ion batteries that leverage silicon anode technology to deliver performance levels beyond conventional graphite-based cells. The company's batteries are designed to offer industry-leading gravimetric energy density, enabling longer run times and reduced weight for portable power applications. Amprius blends advanced materials science and scalable manufacturing processes to commercialize next-generation battery solutions.

At the core of Amprius' product portfolio are cylindrical and prismatic cells that employ a proprietary silicon nanowire anode, which supports high charge/discharge rates while maintaining cycle life.

This instant news alert was generated by narrative science technology and financial data from MarketBeat in order to provide readers with the fastest reporting and unbiased coverage. Please send any questions or comments about this story to contact@marketbeat.com.