Acm Research is trading 4.23% up at $73 in after-hours trading, apparently reflecting a semiconductor-sector recovery after higher Treasury yields pressured technology valuations.
- It closed at $70.04 on September 1, 2026.
- Semiconductor stocks fell during regular trading, while broader indexes also declined.
- No verified September 1 company-specific announcement was identified; the latest major company news was August 7 earnings and raised 2026 guidance.