ChipMOS Technologies is trading at $57.93, +5.16% in pre-market on September 18, 2026, as broader AI and chip optimism appears to be supporting the move.

  • No fresh company-specific announcement was identified overnight; its August revenue release and UBS Taiwan Summit presentation were earlier events.
  • Semiconductor sentiment strengthened after Applied Materials announced a $5 billion India investment and Japan-U.S. chip-plant reports.