SEMI is trading at $38.64, up 1.98%, with no verified company-specific earnings, announcement, or late-breaking catalyst found.

  • It closed at $37.83 on August 19, 2026.
  • Semiconductor stocks faced broader pressure as the PHLX Semiconductor Index fell sharply and Asian chipmakers declined.
  • The after-hours gain remains unexplained despite a modestly positive broader market session.