ASE Technology's stock surged 5.06% during the 24-hour period, with significant gains occurring in the night session following earlier intraday strength.

The rebound comes after the stock experienced a cumulative decline exceeding 15% over the prior week, driven by director Jeffrey Chen's large-scale open-market stock sales worth millions of dollars combined with broad semiconductor sector weakness.

The recovery is supported by the company's robust fundamentals, including strong Q1 earnings performance, packaging and testing service price increases of 5% to 20%, an upward revision of advanced packaging revenue targets to $3.5 billion, and active capacity expansion in AI and high-performance computing segments.