On September 14, Amkor Technology fell 8.68% in regular trading, trading at $47.73/share, with turnover of approximately $30.82 million. The decline was driven by the company's announcement to launch the second phase of its Arizona advanced packaging and test campus, raising total planned investment to approximately $12 billion, while the broader semiconductor equipment sector saw widespread selling pressure.

On the news front, the massive capital expenditure plan has raised market concerns over near-term earnings dilution. Additionally, the company was previously reported to be considering divesting a partial stake in its China operations, with that business valued at an estimated $1 billion to $1.5 billion. The strategic uncertainty surrounding both the large-scale domestic buildout and the potential China asset restructuring has continued to weigh on investor sentiment.

Within the Semiconductor Equipment sector, the overall sector posted broad declines. Among individual stocks, ASML Holding NV down 5.84%, Applied Materials down 6.67%, Lam Research down 6.73%, KLA Corporation down 4.81%, and Teradyne down 9.74%.

(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.)