On June 5, UMC declined 3.03% overnight, trading at $20.16/share, with trading volume of $4,138.56. The stock has been in a sustained correction mode as elevated valuation and broad semiconductor weakness continue to weigh on shares.

On the news front, UMC's current TTM price-to-earnings ratio stands at approximately 35.5x, far exceeding its five-year median of 11.8x, with significant year-to-date cumulative gains intensifying valuation reversion pressure. Meanwhile, the semiconductor sector experienced broad-based selling, with Marvell Technology falling 5.38%, Micron Technology down 3.74%, Advanced Micro Devices declining 2.81%, Broadcom dropping 2.48%, and NVIDIA sliding 1.35%, creating sector-wide drag on sentiment.

Despite the company previously reporting Q1 net profit surging 108% year-over-year to NT$16.17 billion with gross margin reaching 29.2%, and announcing selective price increases of approximately 10% for the second half with more comprehensive adjustments planned for next year, the high valuation accumulated from prior rapid share price appreciation remains the dominant market concern driving the ongoing correction.

(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.)