ASE Technology's stock experienced a significant 5.12% decline in pre-market trading, reflecting continued pressure on semiconductor stocks.

The broader semiconductor sector has been under sustained weakness, with systematic sector headwinds exerting significant downward force on individual stocks. Major semiconductor companies including Intel, Micron Technology, Advanced Micro Devices, NVIDIA, and Broadcom have all shown notable declines, indicating widespread selling pressure across the chip industry.

Despite ASE Technology reporting solid first-quarter results and actively expanding high-end testing capacity for AI and high-performance computing applications, persistent sector-wide challenges have continued to weigh on its share price in the near term, overshadowing these positive fundamental developments.