Western Digital Stock Has One Thing Left To Prove

Western Digital (WDC) could soon see fresh demand from a new base of customers. Management notes that AI labs, newer cloud companies, and an autonomous vehicle maker are increasingly seeking the manufacturer out for storage. Western Digital sells only hard drives. Exactly how much these new buyers will ultimately add is not settled yet.

Image by K. Mishina from Pixabay

Cloud Customers Made Up 88% Of Fiscal Q4 Revenue

During the fiscal Q4 2026 earnings call on August 5, 2026, analysts pressed executives on the specific purchasing habits and potential scale of these new clients.

Right now, the core business remains heavily concentrated. In fiscal Q4 2026, cloud customers accounted for 88% of revenue. That segment alone generated $3.3 billion, marking a 44% increase from a year earlier. Because of this footprint, almost all of Western Digital’s sales currently depend on what cloud customers buy.

What Has Western Digital Said About AI Demand?

Executives see demand rising from three primary groups: frontier AI labs, cloud companies it calls neoclouds, and manufacturers integrating AI into machines such as cars. Management pointed out that the storage demand one autonomous vehicle company expects for calendar 2027 has already risen several-fold. Moving forward, Western Digital expects demand for storage capacity, measured in exabytes, to grow at more than 25%.

Western Digital shipped 231 exabytes of storage capacity in fiscal Q4 2026. While that represents a 22% increase from a year earlier, the pace was slower than the 25% growth in shipments reported for all of fiscal 2026. Management noted that shipment growth will naturally vary from quarter to quarter depending on the specific mix of products shipped.

Despite the slower volume growth, overall revenue grew 44% in the same quarter. Management credited this top-line gain to both the extra exabytes moving out the door and a stronger pricing environment. The blended average price per terabyte rose by a high-teens percentage from a year earlier, confirming that a good part of the revenue growth came directly from price.

Western Digital’s Shipments Still Have To Grow Faster

Western Digital has not yet reported fiscal Q1 2027 results. That upcoming release will provide clarity on exactly how much storage the company shipped. Management guides financial targets only one quarter at a time, projecting revenue for that quarter to reach $4.1 billion, plus or minus $100 million. That target sits above the $3.75 billion reported for fiscal Q4 2026. However, higher revenue can stem from price increases just as easily as from volume gains.

Investors will be watching the underlying physical metrics. If exabyte shipments grow faster than 22% from a year earlier in fiscal Q1 2027, it would confirm that Western Digital’s shipment growth is picking up from fiscal Q4 2026.

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