Why UMC stock is up 16% today: 8-inch price hike talk meets Taiwan’s CPO buzz
United Microelectronics Corp shares jumped 16% Tuesday, closing at $10.82 and leading semiconductor gains as U.S. markets fell. Taipei-listed UMC hit the daily limit before settling up 6-7%, fueled by rumors of 8-inch wafer price hikes. Foreign investors remained net buyers, and UMC confirmed its Singapore Fab 12i P3 expansion is moving toward mass production by 2027. Investors await UMC’s earnings report on Jan. 28.