NEW YORK, December 31, 2025, 15:14 ET — Regular session
- Western Digital shares were down about 2.5% in afternoon trading in the final session of 2025.
- The stock remained on track to finish 2025 as the S&P 500’s top gainer.
- Weakness in chip and data-storage names weighed on the group, including Micron and Seagate.
Western Digital Corp (WDC.O) shares fell about 2.5% to $171.62 by 3:14 p.m. ET on Wednesday, the market’s final session of 2025. Shares traded between $171.41 and $177.46 after opening at $176.77, with about 2.3 million shares changing hands. The retreat still left the data-storage maker up about 291% for the year, making it the S&P 500’s top gainer, Barron’s reported. 1
Why it matters now: Western Digital has become a heavily owned way to play the buildout of AI-focused data centers, and year-end portfolio rebalancing can amplify moves. Holiday-thinned trading means fewer orders are available to absorb buying or selling, which can exaggerate intraday swings.
For investors heading into 2026, the stock’s late-day direction matters less than what it says about risk appetite for the hardware names that led this year’s rally. Western Digital’s moves are increasingly read alongside chip and networking suppliers tied to the same spending cycle.
U.S. stocks were modestly lower in light trading, with technology shares edging down, Reuters reported. “It’s perfectly fine in any bull market to have moments of cost,” said Giuseppe Sette, co-founder and president of Reflexivity, pointing to profit-taking — locking in gains — when liquidity is low. 2
A market wrap on Nasdaq.com said chipmakers and data-storage stocks were among Wednesday’s laggards. Micron Technology fell about 2.4%, Seagate Technology slid 1.9% and Marvell Technology dropped roughly 1.6%. 3
Western Digital sells hard disk drives, which store data magnetically on spinning platters and are typically cheaper per terabyte than flash memory. The company has been selling more high-capacity “nearline” drives used by large cloud operators running AI workloads.
Traders now turn to the next earnings update for confirmation that demand and pricing are holding up. Nasdaq’s earnings calendar lists Western Digital’s next report as Feb. 4, though it notes the date is an estimate and not company-confirmed. 4
U.S. stock markets will be closed on Thursday for New Year’s Day and reopen on Jan. 2, MarketWatch said. 5
Investors will be watching whether the late-year pullback in tech deepens after the holiday break, and whether the storage trade keeps moving in lockstep with AI-linked semiconductors. Earnings-season commentary on cloud spending plans will be the next read-through for drive demand.
Western Digital’s surge has reset expectations for 2026 margins and cash generation. Wednesday’s dip pointed to money coming off the table into year-end, not a clear shift in the longer-running AI storage narrative.
