Amkor surges 6.4% on record revenue, EPS beats by 62%
Advanced packaging demand drives margin expansion; CEO highlights 'pivotal' 2025 performance
Amkor Technology shares jumped 6.4% in Monday trading after the semiconductor packaging services provider reported quarterly earnings that dramatically exceeded analyst expectations, powered by record revenue in advanced packaging and computing segments.
The Tempe, Arizona-based company reported fourth-quarter earnings per diluted share of $0.69, crushing the consensus estimate of $0.43 by 62%. Revenue reached $1.89 billion for the period, up 16% year-over-year, though this narrowly missed analysts' $1.93 billion target. The stock's surge came on volume of 8.1 million shares, roughly double the daily average.
More significantly for investors, Amkor delivered substantial margin expansion that suggests improving operational efficiency. Gross margin expanded to 16.7%, up 2.4 percentage points sequentially, while operating margin reached 9.8%, an increase of 1.8 percentage points from the prior quarter. Operating income for the quarter totaled $185 million.
Chief Executive Officer Kevin Engel, who took the helm last year, characterized 2025 as a pivotal period for the company. "2025 was a pivotal year for Amkor," Engel said in the earnings announcement. "We delivered strong results with record Advanced packaging and Computing revenue, executed on our strategic initiatives, and strengthened our position in the fastest growing areas of the semiconductor industry."
The company's cash generation proved particularly robust, with operating cash flow reaching $1.10 billion for full-year 2025 and free cash flow totaling $308 million. These figures provide Amkor with substantial flexibility as it looks to accelerate strategic investments in the advanced packaging technologies that are increasingly critical for artificial intelligence applications and high-performance computing.
For the full year, Amkor reported net sales of $6.71 billion, a 6% increase from 2024, with full-year EPS of $1.50. The results underscore Amkor's role as a critical partner in the semiconductor supply chain, providing packaging and testing services that enhance the performance and reliability of integrated circuits used in smartphones, data centers, automotive systems, and wearables.
Looking ahead, the company provided first-quarter guidance that reflects seasonality typical of the semiconductor industry. Amkor expects net sales between $1.60 billion and $1.70 billion, with gross margins projected at 12.5% to 13.5%. Diluted EPS is forecast between $0.18 and $0.28 for the quarter.
"We enter 2026 with momentum and are accelerating strategic investments to support the next wave of advanced packaging growth," Engel said, signaling continued confidence in the company's positioning within the expanding semiconductor market.
Analysts currently maintain a mixed outlook on Amkor, with a consensus target price of $44.75, below Monday's trading price of $52.52. Of nine analysts covering the stock, two rate it a strong buy, one recommends buy, and six advise hold. The company's forward price-to-earnings ratio stands at 29.76, suggesting investors have already priced in significant growth expectations.
Amkor's performance comes amid broader industry expansion in advanced packaging, which has become increasingly important as chipmakers seek performance gains beyond traditional Moore's Law scaling. The company's ability to capture share in high-growth segments like AI accelerators and automotive electronics will be critical to sustaining its current momentum through 2026.