AMPX is trading 5.2% up at $18.06 following a pre-market rebound driven by the company's scheduled participation in an investor conference.
- The move appears company-specific as the broader market remains in a risk-off posture, with the S&P 500, Nasdaq, and Dow all trading lower.
- The stock continues its recent upward momentum, which included a significant 11.23% gain on May 26, 2026.