AMPX ▲ +1.3% - Amprius Technologies, Inc. $AMPX Amprius Introduces SiCore®500 – High Energy Density Cells for Unmanned Aviation Amprius Technologies rose 1.3% today following the company's introduction of its SiCore®500 high energy density cells designed for unmanned aviation applications. The new product announcement appears to have resonated with investors looking for revenue growth catalysts in the specialized battery market. 02-SEP-2026 08:30 AM ET