Key Takeaways:
ASE Technology Holding Co. is emerging as one of the most direct beneficiaries of the AI infrastructure buildout, yet the world's largest outsourced semiconductor assembly and testing provider often receives less attention than the chip designers and foundries it serves.
The company's first-quarter results showed the scale of that opportunity. ASE Technology's ATM (assembly, testing and materials) business posted record revenue of NT$112.4 billion in the three months ended March 31, up 29.7% from a year earlier, the company said. The ATM segment now accounts for about 65% of consolidated revenue and more than 90% of operating profit, underscoring its growing importance as AI infrastructure spending drives demand for advanced packaging.
"The AI packaging opportunity is larger than we anticipated six months ago," Chief Executive Officer Tien Wu said on the earnings call. "We are increasing capital expenditures to support stronger-than-expected demand and preparing for another major capacity ramp in 2027."
The growth is being driven by LEAP, ASE Technology's advanced packaging platform. Management raised its 2026 LEAP revenue outlook and now expects revenue from these services to exceed $3.5 billion. The company is investing across multiple advanced packaging technologies — full-process advanced packaging, wafer-sort capabilities, panel-level packaging and co-packaged optics (CPO) — all of which are expected to play increasingly important roles in next-generation AI systems.
Financially, the benefits are already visible. First-quarter gross margin expanded to 20.1%, while net income surged 87% year over year. Management expects revenue, gross margin and operating margin to improve again in the second quarter.
How ASE Technology compares with peers
The advanced packaging market is becoming a critical chokepoint in the AI supply chain. As chip designers push toward higher transistor counts and memory bandwidth, traditional packaging methods can no longer keep pace. Advanced packaging — techniques that stack chips vertically or interconnect them more densely — has become essential for AI accelerators from Nvidia Corp., Advanced Micro Devices Inc. and Broadcom Inc.
ASE Technology's main rival, Amkor Technology Inc., is also benefiting from the same trend. Amkor, the largest US-headquartered OSAT provider, is expanding its advanced packaging footprint and strengthening relationships with leading semiconductor customers. But ASE Technology's combination of packaging, testing and electronics manufacturing services provides broader exposure to AI infrastructure spending, according to the company.
United Microelectronics Corp., one of the world's leading pure-play foundries, plays a complementary role. While UMC is not a packaging provider, it benefits from growing semiconductor content across AI, industrial and connectivity applications. The close relationship between foundry production and advanced packaging demand makes both companies important participants in the AI ecosystem.
Valuation and growth outlook
ASE Technology shares have surged 143.8% year to date, far outpacing the semiconductor industry's 68.9% gain. Despite the rally, the stock trades at a forward price-to-earnings multiple of 32.44, below the industry average of 40.89, according to data compiled by Zacks.
The Zacks Consensus Estimate for 2026 earnings per share has risen to $1.05 over the past 30 days, implying 84.2% growth from 2025. The company's expanding LEAP platform, record ATM performance and visibility into 2027 growth suggest the market may still be pricing in only part of the AI packaging opportunity.
For investors, the key question is whether ASE Technology can sustain its margin trajectory as it scales capacity. The company's gross margin of 20.1% in the first quarter remains below the levels achieved by some foundry peers, but management's expectation of sequential improvement in the second quarter provides a near-term catalyst. With capital expenditures rising to support 2027 capacity, the payoff from those investments will be a critical metric to watch over the next 12 to 18 months.
This article is for informational purposes only and does not constitute investment advice.
