ASE Technology Holding (NYSE:ASX) reported unaudited consolidated net revenues for December, the fourth quarter, and full year 2025.
December net revenues reached NT$58.865 billion, a 0.1% sequential increase and 11.3% higher year-over-year.
In U.S. dollars, December revenues were approximately $1.880 billion, down 1.2% sequentially but up 15.3% from the prior year.
Fourth-quarter consolidated net revenues totaled NT$177.915 billion, rising 5.5% quarter-over-quarter and 9.6% year-over-year.
In U.S. dollars, Q4 revenues amounted to $5.763 billion, reflecting 1.8% sequential growth and 14.2% annual growth.
For the full year 2025, consolidated net revenues climbed 8.4% to NT$645.388 billion.
In U.S. dollars, annual revenues increased 11.8% to $20.782 billion.
The assembly, testing, and materials (ATM) segment, the company's core semiconductor packaging and testing business, showed particularly strong performance.
December ATM revenues were NT$37.586 billion, up 4.2% sequentially and 25.9% year-over-year (or $1.201 billion in USD, +2.9% sequential and +30.4% YoY).
Fourth-quarter ATM revenues rose to NT$109.707 billion, a 9.4% sequential increase and 24.2% higher annually.
Full-year ATM revenues advanced 19.4% to NT$389.228 billion (or $12.539 billion in USD, +23.2% YoY), underscoring sustained demand for advanced packaging solutions in AI, high-performance computing, and automotive applications.