ASE Technology Holding (2311.TW) is the world's largest outsourced semiconductor assembly and test company, commanding more than 30% of the global market. For four decades the Kaohsiung-based firm has performed the essential final steps of chipmaking: turning raw silicon wafers into functional, tested chips ready for deployment. As advanced packaging becomes the tightest bottleneck in the AI supply chain, ASE has moved from behind-the-scenes enabler to one of the most strategically important companies in global technology.
ASE posted first-quarter 2026 consolidated net revenue of NT$173.7 billion (US$5.5 billion), a 17.2% increase year on year. The assembly, testing, and material (ATM) segment, which captures its core packaging and testing business, grew even faster at 29.7% year on year to NT$112.4 billion (US$3.6 billion). March revenue reached NT$61.6 billion (US$1.9 billion), up 14.6% from the same month a year earlier. The numbers reflect surging demand for AI chip packaging, with capacity running near full as hyperscalers and chip designers compete for every available slot.
ASE is investing at a scale with no precedent in the OSAT industry. On April 10, the company broke ground on a major high-end testing park at Renwu Industrial Park in Kaohsiung, committing NT$108.3 billion (US$3.4 billion). The site is projected to generate annual output of NT$177.3 billion (US$5.6 billion) once fully operational, with the first phase launching in April 2027 and the second in October 2027.
Separately, in March ASE broke ground on a third technology park in Nanzi, Kaohsiung, investing NT$17.8 billion (US$559 million) in AI and high-performance computing packaging capacity, scheduled for completion by Q2 2028. Combined with its existing Kaohsiung footprint at Nanzih, Luzhu, and Dashe, ASE is building one of the most concentrated semiconductor packaging corridors in the world.
Second, ASE's proprietary FOCoS (Fan-Out Chip-on-Substrate) platform is entering volume production at its Kaohsiung facility in the second half of 2026. FOCoS connects multiple chips using a fan-out redistribution layer without requiring a silicon interposer, reducing cost while maintaining high integration density. AMD and Broadcom are among the first customers.
Third, ASE's subsidiary SPIL is developing CoWoP (Chip-on-Wafer-on-PCB) in strategic collaboration with Nvidia. CoWoP eliminates the organic substrate layer entirely, mounting the chip assembly directly onto a printed circuit board. This approach enables larger packages at lower cost and is considered a potential long-term solution as AI chips continue to grow in size.
ASE COO Dr. Tien Wu has framed the company's position in stark terms: hardware technology and production capacity have become the new bottleneck restricting AI, and Taiwan holds the leverage. SEMI, the global industry body chaired in part by Wu, now expects semiconductor output to reach US$1 trillion as early as 2026, three to four years ahead of schedule.
For ASE, the outlook is shaped by rising Nvidia Rubin volumes in the second half, growing demand from custom ASIC programs at AWS, Google, Meta, and Microsoft, and the ramp of FOCoS for AMD and Broadcom. With billions committed to new capacity and multiple technology platforms maturing in parallel, ASE enters the rest of 2026 at the center of the AI infrastructure buildout.
