On July 28, Amkor Technology fell 17.87% in regular trading, trading at $48.72/share, with turnover of $91.55 million. The sell-off was triggered by the company's Q3 revenue guidance falling short of Wall Street expectations, despite delivering a significant Q2 earnings beat.

Amkor reported Q2 EPS of $0.70, far exceeding the consensus estimate of $0.48, representing a 218% year-over-year increase. Revenue came in at $1.898 billion versus the expected $1.808 billion, while gross margin expanded to 16.8% from 12.0% a year earlier. However, the company guided Q3 revenue of $1.95 billion to $2.05 billion, with a midpoint of $2.0 billion, significantly below the analyst consensus of approximately $2.1 billion, becoming the primary catalyst for the sharp decline.

The selloff was compounded by profit-taking pressure, as the stock had previously surged over 12% following a $1.5 billion multi-year advanced packaging partnership with Nvidia. Additionally, the broader semiconductor equipment sector experienced widespread weakness, with peers including ASML down 4.44%, Applied Materials down 5.7%, Lam Research down 6.35%, and KLA-Tencor down 4.98%.

(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.)