NEW YORK, January 3, 2026, 14:25 ET — Market closed
- Western Digital shares jumped 9% on Friday, extending a storage-led rally into the first session of 2026
- Peers Micron and spinoff Sandisk also surged, keeping “AI infrastructure” plays in the spotlight
- Investors are watching upcoming U.S. data and the next earnings updates for signs on cloud spending and storage pricing
Western Digital (WDC.O) shares closed up 9% at $187.70 on Friday, outperforming the broader market on the first trading day of 2026.
The move mattered because investors have treated data storage as a key “picks-and-shovels” beneficiary of artificial intelligence, alongside semiconductors and servers. That theme helped power big gains across storage and memory names in 2025 and is carrying into the new year. Barron’s
Western Digital sells hard-disk drives, or HDDs — spinning-disk storage used for bulk, low-cost capacity in cloud data centers. Investors have been buying the group on the view that AI training and “inference” (running models in production) are generating more data that needs to be stored for longer. Investors
Friday’s rally was not isolated. Micron (MU.O) rose about 10.5%, Sandisk (SNDK.O) jumped nearly 16%, and Seagate (STX.O) gained about 4.4%, while the Philadelphia Semiconductor Index climbed about 4%.
“Data is the fuel that powers AI, and it is HDDs (hard-disk drives) that provide the most reliable, scalable and cost-effective data storage solution,” Western Digital CEO Irving Tan said on a call with analysts after the company’s late-October results, according to Investors.com. Investors
Western Digital spun off its flash-memory unit Sandisk in mid-February 2025, leaving the remaining company more concentrated in HDDs. Sandisk’s enterprise solid-state drives, or SSDs, have also been in demand for data centers because AI workloads are data-intensive, Investopedia reported.
The last major company update came on Oct. 30, when Western Digital reported fiscal first-quarter revenue of $2.82 billion, up 27% from a year earlier. The company said it expected fiscal second-quarter revenue of about $2.9 billion at the midpoint and pointed to continued strength in higher-capacity data-center drives.
Western Digital and Seagate sit at the center of the HDD market, which can translate into pricing power when demand is strong and supply is tight. Barron’s said the pair control about 80% of the HDD market, a structure that can dampen the price wars that historically defined storage cycles.
The broader tape on Friday was choppy, with the Nasdaq slipping slightly and holiday-thinned trading volumes, as investors weighed rate expectations and the outlook for “AI infrastructure,” Reuters reported. Reuters
Before next session, markets will turn to a backlog of U.S. economic releases and employment data, which Reuters said could be key for expectations on Federal Reserve policy. Rate swings matter for high-momentum tech and AI-linked trades because they can quickly change how investors value future earnings.
For Western Digital, traders are watching whether demand and pricing for high-capacity cloud drives stay firm into early 2026, and whether peer commentary keeps reinforcing the “storage bottleneck” narrative. Moves in Micron, Sandisk and Seagate have been reinforcing the group trade.
Earnings season is also approaching. Market calendars such as Nasdaq and MarketBeat have pegged Western Digital’s next results for early February, though those dates are estimates that can shift.
On the chart, Western Digital finished Friday near the session high of $188.90 after trading as low as $176.07. Traders often treat $190 as a round-number level, with Friday’s low acting as a nearby reference point if the rally fades.
