10 Firms With Massive Gains; 5 at Record Highs

3. United Microelectronics Corp. (NYSE:UMC)

United Microelectronics soared to a new three-year high on Wednesday, as investors cheered the jump in its net sales last year.

At intra-day trading, the stock jumped to its highest price of $9.11 before trimming gains to finish the session just up by 9.98 percent at $8.93 apiece.

This followed an update on the same day that its net sales for full-year 2025 increased by 2.26 percent to NT$237 million from NT$232 million in the same period last year.

For December alone, net sales grew by 1.66 percent to NT$19.28 million from NT$18.96 million in the same month in 2024.

Meanwhile, United Microelectronics Corp. (NYSE:UMC) is set to announce the results of its earnings performance for the fourth quarter and full-year 2025 on January 28, 2026.

For the fourth quarter, United Microelectronics Corp. (NYSE:UMC) earlier said that it expects wafer shipments to remain flat on a quarter-on-quarter basis, while gross profit margin would jump by a high-20-percent range.

Based in Taiwan, United Microelectronics Corp. (NYSE:UMC) is one of the leading semiconductor companies globally.