Western Digital Plunges 16% on Downgrade Despite Beating Revenue and EPS Estimates

Key Facts

Reflecting growing analyst concern over margin sustainability, Western Digital shares faced intense selling pressure, dropping 5.40% during regular hours and an additional 10.80% in after-hours trading. This slump followed a rating downgrade by Summit Insights Group from 'Buy' to 'Positive,' despite the company reporting fiscal fourth-quarter results that beat expectations. Western Digital posted EPS of $3.56 and revenue of $3.75 billion, surpassing analyst estimates, yet these robust figures were overshadowed by disappointing forward-looking guidance.

The disconnect between current performance and market reaction stems from projected non-GAAP gross margins of 55% to 56% for the first fiscal quarter of 2027. Per market data, this outlook was perceived as weak relative to the high benchmarks recently established by competitor Seagate Technology. While WDC shares closed at $519.17 on August 5, 2026, the subsequent double-digit slide in extended trading underscores the market's pivot toward future profitability risks over past earnings growth.

Looking ahead, traders will focus on price stabilization following the significant post-close decline from the August 5, 2026, level of $519.17. With the upcoming economic calendar showing no immediate catalysts for the hardware sector, the stock's recovery will depend on management's ability to execute its margin strategy. Market participants will closely monitor any operational updates that could counter the impact of the recent downgrade and address the competitive pressures cited by analysts.