On June 3, UMC fell 3.34% overnight, trading at $21.71/share, with trading volume of $840,100, extending the recent corrective trend.

On the news front, UMC's current TTM price-to-earnings ratio has risen to 36.7x, far exceeding its five-year median of 11.8x. The stock has posted significant year-to-date gains, and valuation reversion pressure continues to weigh on the share price. Although the company previously reported Q1 net profit surging 108% year-over-year to NT$16.17 billion, with gross margin reaching 29.2% and capacity utilization recovering to 79%, the high valuation risk accumulated from rapid prior appreciation remains the market's primary concern. Additionally, broader semiconductor sector weakness contributed to the decline, with Micron Technology down 0.33%, NVIDIA down 0.68%, and Advanced Micro Devices down 0.74%.

(The above content is based on publicly available market information, generated by a program or algorithm, and is intended solely as a stock movement alert. It does not constitute investment advice or a basis for trading decisions.)