ASE Technology's stock plummeted 5.34% in pre-market trading on Monday, reflecting significant downward pressure on the shares.

The decline is attributed to broader semiconductor sector weakness, with systematic headwinds affecting major chip companies. 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 overshadowed these positive fundamental developments.

The broader semiconductor sector has been under sustained weakness, with widespread selling pressure across the chip industry affecting other major companies, indicating that the downward movement is part of a larger sector trend rather than company-specific issues.