Amprius Technologies shares rise 11.63% intraday after announcing strategic U.S. manufacturing partnership with Nanotech Energy to scale silicon-anode battery production.

Amprius Technologies (AMPX) surged 11.63% intraday following the announcement of a strategic U.S.-based manufacturing partnership with Nanotech Energy. The collaboration marks its first domestic producer of high-performance silicon-anode battery cells, aligning with updated National Defense Authorization Act (NDAA) requirements to secure a U.S. supply chain for defense, aerospace, and mission-critical customers. This partnership addresses key risks around reliance on Asian manufacturing while expanding contracted global capacity beyond 2.0 GWh. The deal also positions Amprius to accelerate qualification cycles for defense procurements, particularly for clients like L3Harris seeking compliant, high-performance battery solutions. Analyst coverage, including a Needham "Buy" rating with a $20 price target, further reinforced investor optimism. While the company’s lease termination in Colorado and CEO transition were disclosed, the immediate price action was driven by the U.S. manufacturing milestone, which strengthens its value proposition in national security applications and reduces execution risks in its manufacturing-light model.