Amkor Technology (NASDAQ: AMKR) saw its stock price surge 6.08% in after-hours trading on Monday following the release of its second-quarter earnings report that surpassed analysts' expectations. The semiconductor packaging and test services provider delivered strong financial results and provided an optimistic outlook for the third quarter.

For Q2 2025, Amkor reported earnings per share of $0.22, significantly beating the analyst consensus estimate of $0.16. The company's quarterly sales reached $1.51 billion, exceeding the projected $1.42 billion and marking a 3.4% increase from the same period last year. This impressive performance was driven by double-digit growth across all end markets, with a particular focus on artificial intelligence (AI) and high-performance computing (HPC) technologies.

Adding to the positive sentiment, Amkor provided robust guidance for the third quarter of 2025. The company forecasts Q3 net sales between $1.875 billion and $1.975 billion, surpassing the consensus estimate of $1.76 billion. Amkor also expects Q3 earnings per share in the range of $0.34 to $0.48. This optimistic outlook, coupled with the company's strategic focus on transformative technologies like AI and HPC, appears to have fueled investor enthusiasm and contributed to the stock's after-hours rally.