Acm Research is trading 6.5% down at $51.14, amid renewed concern about AI spending.

  • No company-specific announcement was identified.
  • Semiconductor shares faced pressure as investors questioned returns on heavy AI investment; a market report also described weakness in chip stocks and a 7.4% drop in Lam Research after its weaker forecast.
  • The Nasdaq Composite was down 1.51% in the supplied market data.