SanDisk is trading 4.1% down at $11.11 after broad memory-chip weakness and profit-taking following its recent rally. - Investors are weighing elevated sector valuations and whether NAND earnings growth can remain at peak levels. - Nasdaq weakness and higher Treasury yields are adding to risk-off sentiment. - No fresh company-specific announcement was identified for September 24, 2026; the move is primarily sector-driven rather than tied to a confirmed corporate catalyst.