On September 14, Amkor Technology declined 5.1% overnight, trading at $49.09 per share, with turnover of $983,000. The decline came as the company announced the launch of Phase 2 construction at its Arizona advanced packaging and test campus, raising planned total investment to approximately $12 billion, while broader semiconductor equipment stocks also sold off heavily.

Earlier in September, Amkor confirmed it is moving ahead with the second phase of the Arizona facility expansion, significantly increasing the capital commitment. The massive investment scale has raised concerns about near-term capital expenditure pressure on the balance sheet. Additionally, Amkor was previously reported to be exploring a potential stake sale of its China business, with the unit valued at an estimated $1 billion to $1.5 billion. The company reportedly hired an adviser to gauge interest among potential buyers, including Asian investment firms and industry players. The strategic uncertainty surrounding its China operations has continued to weigh on market sentiment.

Within the Semiconductor Equipment sector, the overall sector experienced broad-based selling pressure. Among peers, Lam Research fell 4.49%, Applied Materials fell 4.48%, ASML Holding fell 3.72%, KLA Corporation fell 4.51%, and Teradyne fell 4.63%.

(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.)