Amprius (AMPX) Stock Plunges 27% Despite Q1 Revenue Surge of 153%
Amprius Technologies, Inc., AMPX The company generated $28.5 million in quarterly revenue — marking a 153% increase compared to the prior-year period and climbing 13% sequentially from Q4 2025. This performance exceeded Wall Streets consensus forecast of $25.32 million by approximately 12.7%. However, profitability metrics told a different story. AMPX posted a per-share loss of $0.04, significantly worse than the -$0.0278 loss analysts had projected. This 43.88% earnings shortfall prompted the sharp sell-off in extended trading. $AMPX with a massive revenue beat in Q1, they just missed the EPS estimates. The stock is down 7% in aftermarket but on the first sight there is a lot to like about these earnings. 1. Huge Backlog: $500 Million in Defense Orders This is a big win. While the companys current… pic.twitter.com/7u9mlQOYod — KaizenInvestor (@Kaizen_Investor) May 6, 2026 Profitability margins also contracted during the quarter, with gross margin declining to 20% from the previous quarter‘s 24%. CFO Ricardo Rodriguez attributed this compression to elevated overhead expenses associated with the company’s SiMaxx platform — approximately $3 million in fixed costs against just $618,000 in SiMaxx-related revenue. The SiCore battery product line has emerged as the primary revenue driver, representing 97% of total product sales during the quarter. The legacy SiMaxx platform continues its