United Microelectronics Corporation (UMC) saw its stock price soar 7.28% during Wednesday's trading session, marking a significant 24-hour gain for the semiconductor foundry.

The rally is attributed to multiple positive catalysts. A key driver is reports that Taiwan Semiconductor Manufacturing Company (TSMC) has reduced its 28-nanometer wafer production capacity by more than 25%, prompting some of its customers to divert orders to UMC. Furthermore, a strategic partnership with Intel to co-develop advanced 3nm and 12nm process technologies has bolstered investor confidence in UMC's technological roadmap.

Additional factors include the successful entry of UMC's embedded deep trench capacitor technology into Qualcomm's supply chain and the company's strong fundamental performance, highlighted by a 108% year-over-year surge in first-quarter net profit. Positive sentiment across the broader semiconductor sector also contributed to the upward movement.