UMC (UMC) is up 13.2%, or 86c to $7.42. Published first on TheFly – the ultimate source for real-time, market-moving breaking financial news. Try Now>> See today’s best-performing stocks on TipRanks >> Read More on UMC: GlobalFoundries exploring possibility of UMC merger, Nikkei says UMC upgraded to Buy from Sell at Citi Largest borrow rate increases among liquid names United Microelectronics Releases 2024 Financial Audit Results UMC Reports Capital Reduction and Sales Growth in March 2025 Disclaimer & DisclosureReport an Issue