SanDisk and Western Digital shares jump on SK Hynix's plan to boost AI memory capacity.

Shares of SanDisk rose 14% and Western Digital climbed 6% following SK Hynix's announcement to double wafer capacity in five years and triple it by 2034 to meet growing AI memory demand. This plan supports a positive outlook for NAND, DRAM, and HDD suppliers, benefiting SanDisk's NAND flash and Western Digital's HDD storage for AI data centers. The sector-wide rebound also reflects improved market sentiment despite geopolitical risks near the Strait of Hormuz. Investors will watch if these stocks hold gains amid ongoing macro and company-specific developments.