Why Is Western Digital (WDC) Stock Price Up 12.51% Today, July 21? AI Storage Demand Revives the Memory Trade

Western Digital surged 12.51% amid a broad rebound across memory and storage equities, driven by constructive analyst commentary on the AI memory cycle (not a WDC-specific catalyst). The move reflects renewed confidence in data-center AI spending and storage demand, with sector breadth suggesting a repricing of the memory complex after a pullback. Near-term trading sensitivity remains tied to follow-through in peer performance and AI capex commentary.