Dell Drops 6%, Western Digital Rises 5% as the Memory Boom Splits the AI Hardware Trade

Quick Read

Dell fell 6% and Western Digital surged 5%, splitting the AI trade between memory sellers gaining pricing power and assemblers absorbing higher costs.

Micron’s blowout quarterly results sparked the memory rally, lifting SanDisk alongside Western Digital as AI data center demand validates elevated storage valuations.

Dell’s gross margin compressed from 21% to 18% last quarter, and climbing memory costs threaten to deepen that squeeze heading into August earnings.

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Shares of Dell Technologies (NYSE:DELL) are down 6% in midday trading Thursday, last changing hands near $407 after closing at $434.06 on Wednesday. The slide stands out because it’s happening on a day when memory and storage names are ripping higher.

At the same time, Western Digital (NASDAQ:WDC) stock is up 5%, trading near $678. The split between a server and PC builder falling while a storage maker rallies tells the story of today’s market action in AI hardware stocks.

Both names have been monster performers in 2026. Dell stock is up 224% year to date through Wednesday’s close, while Western Digital stock has climbed 296% year to date. Today’s divergence isn’t subtle.

Two Sides of the Memory Boom

The catalyst behind Western Digital’s move is straightforward. Memory and storage stocks rallied after Micron Technology’s (NASDAQ:MU) blowout quarterly results “justify elevated valuations” and reinforced the view that AI capital spending keeps accelerating. Memory has been a bottleneck in the AI buildout, and that scarcity is now showing up as pricing power for the suppliers.

Western Digital is a pure-play HDD beneficiary of that dynamic. The company’s most recent quarter showed non-GAAP gross margin of 51% and revenue of $3.34 billion, up 46% year over year. CEO Irving Tan summed up the demand backdrop, stating, “Virtually every AI workload, from training, inference, agentic AI to physical AI, creates data that is stored persistently and cost-efficiently on HDDs.”

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Dell’s drop today doesn’t have a single confirmed catalyst, but it likely reflects the flip side of that same memory squeeze. Dell builds servers and PCs that buy memory, so the rising prices lifting Western Digital and peers translate into input-cost pressure for Dell’s box-maker business. It’s the same dynamic behind hardware-cost worries hitting other consumer device names this week.