STMicroelectronics is trading 4.28% up now at €46.57, appearing to participate in a broader semiconductor rally supported by improving AI demand expectations and strength across chipmakers.
- The stock is extending gains after a 3.05% advance on September 21; no clear company-specific announcement explains the September 22 move.
- Earlier management commentary highlighted robust AI-infrastructure orders and data-center revenue forecasts above $1 billion for 2026.