As of December 2025 United Microelectronics has a market cap of A$30.83 Billion. This makes United Microelectronics the world's 1097th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.
On Dec 19th, 2025 the market cap of United Microelectronics was reported to be: