Acm Research is trading 7.26% up at $78.10 in pre-market, based on the provided quote, with investors possibly drawing support from its August 7 second-quarter report.
- The report showed stronger-than-expected results and raised 2026 revenue guidance to $1.125 billion–$1.175 billion.
- No fresh September 1, 2026 company-specific announcement, earnings release, or filing clearly explains the move.
- The broader market is weaker; an August 24 bullish semiconductor-equipment outlook offers sector support but is not a confirmed same-day catalyst.