Applied Optoelectronics is trading at $74.27, up +10.01%, as semiconductor stocks rebounded. - No clear company-specific announcement was found to explain the October 26 move. - Available reporting said AI-infrastructure and semiconductor stocks stabilized after a recent sell-off as investors looked ahead to major technology earnings and the Federal Reserve meeting. - Broad-market strength may also have contributed, though available evidence does not isolate its effect on the stock.