Infineon Technologies is trading 4.01% up now at €56.58 after semiconductor stocks rallied on renewed artificial-intelligence optimism and positive industry developments.
- The broader sector benefited from AI data-center shipment news, Nvidia-chip demand, and improving technology-market sentiment.
- No clear Infineon-specific announcement on September 18 directly explains the rise.
- Its recent Winbond memory-business sale, announced September 16, focuses on longer-term strategic positioning.