STMicroelectronics is trading at $45.43, down 4.22% in pre-market, amid semiconductor-sector weakness. - The provided price context shows a $47.43 previous close. - Lam Research fell about 8% overnight after flagging supply constraints and a lower China revenue contribution, adding pressure to the sector. - No clear company-specific announcement was found for October 22. STMicroelectronics’ investor-relations calendar lists Q3 2026 results for October 29. Broader risk-off conditions may also weigh on shares.