On July 2, United Microelectronics declined 3.23% overnight, trading at $24.88/share, with turnover of $1.3875 million.

On the news front, the U.S. semiconductor sector experienced a massive sell-off, with the Philadelphia Semiconductor Index plunging over 6%. Storage and semiconductor names led the decline, with Micron Technology and SanDisk falling over 10%, Intel dropping over 9%, and TSMC declining nearly 7%. UMC had already fallen over 5% in the prior session, as systematic selling pressure continued to spread across the sector.

UMC had previously rallied sharply on multiple catalysts including rumors of an Intel collaboration on 3nm and 12nm process development, as well as expectations surrounding a global semiconductor price hike cycle. However, the company has publicly stated it would not comment on speculative reports or market rumors. Profit-taking pressure from prior gains, combined with broad industry weakness, continues to weigh on the stock as it extends its 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.)