United Microelectronics is trading at $25.26 (+5.96%) in pre-market after announcing a silicon photonics mass-production milestone with SILITH Technology.
- The company delivered its first high-volume photonic IC wafers from its Singapore fab, designed for a 1.6T AI data center platform.
- Broader semiconductor sentiment is also supportive, with chip stocks rising following ASML’s bullish AI-driven outlook.