STMicroelectronics stock heads into the open after a 3.9 percent drop

At the close on September 14, 2026, STMicroelectronics stock fell 3.9 percent to EUR 42.90 on Euronext Paris. The move came as European chipmakers weakened on AI slowdown worries, while the shares stayed well above the 52-week low of EUR 18.20.

STMicroelectronics stock closed at EUR 42.90 on Euronext Paris on September 14, 2026, down 3.9 percent. The session low was EUR 41.67, and the share price remained above the 52-week low of EUR 18.20.

At the same time, European chipmakers weakened after AI slowdown warnings hit the sector. Morningstar reported that STMicroelectronics was down 3.9 percent shortly after the European opening bell, while the same market move also followed Reuters' broader sector wrap on AI-driven selling.

September 14, 2026 in numbers

STMicroelectronics N.V. (ISIN NL0000226223) ended the session between EUR 41.67 and EUR 42.90. The stock was 39.5 percent below its 52-week high of EUR 70.85, showing a wide gap to its recent peak.

On the index side, the Reuters market wrap said the STOXX 600 was down 0.3 percent in early trade and that technology shares were among the weakest groups. That placed STMicroelectronics below the broader market on the day.

Today before the open

STMicroelectronics introduced the ST SafeSense VD56GA automotive image sensor on September 14, 2026, and the company said samples are available now. The product launch adds a fresh company-specific headline for the session ahead.