Western Digital reported $9.5 billion in fiscal 2025 revenue and has completed a major corporate overhaul that separates its hard-disk-drive and flash businesses into two independent, publicly traded companies — a move the company says will let each business pursue distinct market opportunities, including artificial intelligence. The split, completed in February 2025, also resurrected SanDisk as a standalone company trading under the ticker SNDK, positioned to lean into AI-driven demand for flash storage.
The reorganisation follows Western Digital’s long-running push into flash memory after its 2016 acquisition of SanDisk. Headquartered in San Jose, California, Western Digital has for years produced both NAND flash and hard disk drives used across desktop PCs, servers, network-attached storage, video game consoles and digital video recorders. The company also touts a vast intellectual property estate — more than 33,000 active patents globally — that underpins its product portfolio.
Fiscal 2025 results highlight just how concentrated Western Digital’s revenue base has become: 88% of sales came from the Cloud end market, with the Client and Consumer segments each contributing 6% of total revenues. That skew leaves each newly independent business more directly exposed to the health of cloud and data-centre spending, particularly as demand for large-scale flash storage surges amid AI infrastructure buildouts.
Company executives framed the split as a way to sharpen strategic focus. The new SanDisk (SNDK), freed from the broader conglomerate structure, is described as “well-equipped to take advantage of AI opportunities,” with a product mix and go-to-market approach tailored to hyperscale cloud customers and AI workloads. The remaining HDD-focused company will be able to concentrate on markets and customers where spinning-disk capacity remains cost-effective, such as archival storage and certain enterprise applications.
Western Digital’s products are sold through a mix of direct sales personnel, dealers, distributors, retailers and subsidiaries. The separations are likely to change how capital and resources are allocated between flash and disk technologies, and analysts will be watching how each company prioritises R&D and manufacturing investment in the face of intensifying competition. Western Digital historically competes with major memory and storage players, including Intel, Micron, Samsung Electronics, Seagate Technology and Toshiba.
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The split also comes amid broader shifts in the memory and storage industry, where surging demand for AI training and inference has increased appetite for high-performance flash while placing a premium on scale, cost per terabyte and supply-chain agility. For investors, the reorganisation could clarify each business’s growth prospects and risks, but the heavy reliance on cloud customers — as underscored by the 88% revenue share — means both companies’ fortunes will remain tied to data-centre spending cycles and the pace at which AI deployments expand.
