United Microelectronics Corporation (UMC) Gains As Market Dips: What You Should Know Posted byZacks Equity Research December 17, 2021 Leave a comment on United Microelectronics Corporation (UMC) Gains As Market Dips: What You Should Know United Microelectronics Corporation (UMC) closed the most recent trading day at $11.07, moving +0.54% from the previous trading session.