Why Is AMPX Stock Rising Today? Amprius Technologies Rises 10.8% After Earnings Beat

Amprius Technologies (AMPX) shares rose 10.82% in pre-market trading Wednesday after the company reported second-quarter earnings that beat expectations and raised its full-year revenue outlook.

What Did Amprius Technologies Report?

For the second quarter of 2026, Amprius posted revenue of $34.0 million, coming in well above the $29.3 million consensus estimate. The company also raised its full-year 2026 revenue guidance to at least $140.0 million, signaling confidence in the trajectory of its silicon-anode battery business.

The earnings release highlighted two major commercial developments. A multi-year agreement with Stark Future, an electric motorcycle manufacturer, is valued at more than $100 million. Separately, Amprius secured a $24 million order from a European drone developer. Both contracts point to growing demand for the company's high-energy-density lithium-ion batteries in aviation, defense, and electric-vehicle applications.

Why Did Investors React?

The scale of the revenue beat — roughly 16% above consensus — combined with the guidance raise suggests Amprius's commercial ramp is progressing faster than the market had priced in. The company's silicon-anode technology, which delivers higher energy density than conventional graphite-based cells, has been a differentiating factor in performance-critical applications like drones and electric flight.

The Stark Future and European drone contracts are particularly significant because they represent multi-year, high-value commitments from commercial customers. For a company that reported just $34 million in quarterly revenue, a single contract exceeding $100 million over multiple years meaningfully changes the revenue visibility picture. While the company remains unprofitable as it invests in manufacturing scale-up, the growing order book provides a clearer line of sight toward future revenue growth.

The pre-market move of more than 10% reflects the market reassessing the pace at which Amprius can convert its technology advantage into commercial revenue.

What Comes Next?

The pre-market reaction, while sharp, comes with the caveat that pre-market liquidity is thinner than during regular trading — the magnitude of the move may shift once the full trading session begins. Volume in the pre-market session was relatively weak relative to the 20-day average, and regular-session trading will provide a clearer read on institutional conviction.

Investors will also look to the company's earnings call for management's commentary on the drivers behind the raised guidance, the timeline for the Colorado gigafactory, and any additional detail on the Stark Future and European drone agreements. With the stock moving sharply on the results, the regular session will show whether the initial enthusiasm holds through a full day of trading.