AXT is trading 4.36% higher at $79.21 in pre-market, in a continuation rebound supported by stronger technology sentiment. - Shares closed at $75.90 on September 24, gaining 4.00%. - AXT’s September 21 inclusion in the S&P SmallCap 600 and optimism around its optical-networking exposure have accompanied recent volatility. - No fresh company-specific catalyst or new earnings, acquisition, regulatory, or guidance announcement was identified; the Nasdaq Composite is up 0.69% in the provided market context.