ASE Technology's stock plummeted 5.21% during intraday trading on Friday, reflecting significant downward pressure on the semiconductor sector.

The decline was driven by broad-based selling pressure across the semiconductor industry, with major peers also posting notable losses. The systematic sector-wide weakness dragged ASE Technology lower despite its otherwise strong fundamentals.

Notably, ASE Technology recently disclosed robust operating momentum, including a 29% year-over-year surge in May consolidated revenue and an aggressive expansion plan encompassing multiple new sites and production facilities. However, these positive company-specific catalysts were insufficient to offset the near-term downdraft from the semiconductor sector selloff.