Micron Technology shares faced mild pressure during the regular session despite the company reporting record fiscal fourth-quarter results on the evening of October 1, which included a 379% year-over-year revenue surge to $54.2 billion and an 87% gross margin. While the earnings beat consensus estimates and reinforced the company's dominant position in the AI memory cycle, the stock's decline appears to reflect profit-taking following a massive 276% gain earlier in the year. The move also occurred amid mixed performance in the broader semiconductor industry, where peers like Western Digital and Sandisk saw significant declines, offsetting the positive momentum from other chipmakers.