Amprius Technologies (NYSE:AMPX) Shares Down 2.6% – Here’s What Happened

Posted by Geri Gentry on May 20th, 2026

Shares of Amprius Technologies, Inc. (NYSE:AMPX – Get Free Report) fell 2.6% on Wednesday . The company traded as low as $14.25 and last traded at $15.08. 14,469,086 shares traded hands during trading, an increase of 63% from the average session volume of 8,897,445 shares. The stock had previously closed at $15.48.

Analyst Ratings Changes

A number of brokerages recently weighed in on AMPX. William Blair restated an “outperform” rating on shares of Amprius Technologies in a research report on Friday, March 6th. Northland Securities set a $24.00 price objective on Amprius Technologies in a research report on Monday, May 11th. Needham & Company LLC restated a “buy” rating and set a $20.00 price objective on shares of Amprius Technologies in a research report on Tuesday, March 10th. B. Riley Financial boosted their price objective on Amprius Technologies from $16.00 to $22.00 and gave the stock a “buy” rating in a research report on Monday, March 9th. Finally, Weiss Ratings restated a “sell (e+)” rating on shares of Amprius Technologies in a research report on Monday, April 20th. Eight investment analysts have rated the stock with a Buy rating and one has given a Sell rating to the stock. According to data from MarketBeat.com, the company currently has a consensus rating of “Moderate Buy” and a consensus price target of $20.25.

View Our Latest Report on AMPX

Amprius Technologies Stock Down 2.6%

The company has a market cap of $2.14 billion, a price-to-earnings ratio of -50.26 and a beta of 2.20. The firm has a 50 day moving average price of $18.26 and a two-hundred day moving average price of $13.52.

Amprius Technologies (NYSE:AMPX – Get Free Report) last issued its quarterly earnings results on Wednesday, May 6th. The company reported ($0.04) earnings per share for the quarter, missing the consensus estimate of ($0.02) by ($0.02). The company had revenue of $28.54 million during the quarter, compared to analyst estimates of $25.72 million. Amprius Technologies had a negative net margin of 43.98% and a negative return on equity of 17.48%. Amprius Technologies has set its FY 2026 guidance at –0.060 EPS. On average, equities analysts expect that Amprius Technologies, Inc. will post -0.07 earnings per share for the current year.

Insider Buying and Selling

In other news, Director Steven Chu sold 155,565 shares of the stock in a transaction dated Thursday, March 12th. The stock was sold at an average price of $18.50, for a total value of $2,877,952.50. Following the completion of the sale, the director owned 127,339 shares of the company’s stock, valued at approximately $2,355,771.50. This represents a 54.99% decrease in their ownership of the stock. The sale was disclosed in a filing with the SEC, which is accessible through the SEC website. Also, CTO Constantin Ionel Stefan sold 25,366 shares of the company’s stock in a transaction dated Monday, February 23rd. The shares were sold at an average price of $10.16, for a total value of $257,718.56. Following the sale, the chief technology officer owned 723,330 shares in the company, valued at approximately $7,349,032.80. The trade was a 3.39% decrease in their position. Additional details regarding this sale are available in the official SEC disclosure. In the last ninety days, insiders sold 2,539,829 shares of company stock worth $42,323,376. Corporate insiders own 5.10% of the company’s stock.

Institutional Investors Weigh In On Amprius Technologies

Institutional investors and hedge funds have recently made changes to their positions in the business. Oppenheimer & Co. Inc. boosted its position in shares of Amprius Technologies by 47.7% during the 4th quarter. Oppenheimer & Co. Inc. now owns 442,090 shares of the company’s stock valued at $3,488,000 after purchasing an additional 142,751 shares in the last quarter. Vanguard Group Inc. boosted its position in shares of Amprius Technologies by 37.0% during the 3rd quarter. Vanguard Group Inc. now owns 6,512,620 shares of the company’s stock valued at $68,513,000 after purchasing an additional 1,757,395 shares in the last quarter. SG Americas Securities LLC bought a new stake in shares of Amprius Technologies during the 4th quarter valued at about $2,014,000. Stephens Investment Management Group LLC boosted its position in shares of Amprius Technologies by 33.1% during the 4th quarter. Stephens Investment Management Group LLC now owns 1,441,698 shares of the company’s stock valued at $11,375,000 after purchasing an additional 358,791 shares in the last quarter. Finally, Tudor Investment Corp ET AL bought a new stake in shares of Amprius Technologies during the 3rd quarter valued at about $7,530,000. Institutional investors own 5.04% of the company’s stock.

Amprius Technologies Company Profile

(Get Free Report)

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.