For most of this year, investors have treated memory stocks as one big trade. When SanDisk (SNDK) falls, Micron (MU) falls. When Western Digital (WDC) drops, Micron drops with it, often on days with no Micron news at all. The whole group has swung together, soaring through the first half…This story appeared on barchart.com , 2026-08-09 15:00:02.