United Microelectronics is trading 7.81% up in pre-market at $20.56 after a broad semiconductor rally followed Nvidia’s August 27 forecast, which reinforced confidence that AI-chip demand remains strong.
- Reuters reported Nvidia shares jumped 8.7% and the semiconductor index gained 2.3%, supporting sector-wide strength.
- No fresh August 28 company-specific announcement was identified; the earlier $1.8 billion convertible-bond plan had raised dilution concerns instead.