Western Digital stock tumbles 11% despite Q4 earnings beat
Western Digital shares fell about 11% in extended trading Aug. 5 after the company reported a fiscal Q4 adjusted EPS of $3.56, above the $3.29 consensus, and revenue of $3.75B, above the $3.70B forecast. Guidance for Q1 revenue and adjusted EPS topped estimates, but gross margin outlook of 55% to 56% lagged expectations, contributing to the selloff.
How this was made

The 30-second read
Why it matters
Despite beating on Q4 EPS and revenue, the market focused on Q1 guidance and gross margin range, especially versus a rival’s recent margin signal, leading to a sharp extended-trading decline.
Market read
The article frames a broader 2026 pattern: investors increasingly punish guidance and margin shortfalls even when earnings beats, particularly in AI-linked memory/storage.
What to watch
The article attributes the margin gap partly to pricing timing and notes gross margin should ease as customers sign new long-term agreements, which could limit how long the market discount persists.
Background
Western Digital’s rally had been fueled by its role as a supplier of hard drives and storage for AI data centers, setting high expectations into the earnings print.
Ticker impact
Western Digital reported Q4 EPS and revenue beats, but guided Q1 revenue and EPS and gross margin range below AI-memory expectations, driving an 11% extended selloff.
Near-term downside risk remains elevated until investors get clearer evidence that pricing and margins stabilize under new long-term customer agreements.
The article cites upside beats but highlights guidance disappointment versus hopes and a gross margin gap versus Seagate, with the selloff occurring despite strong year-over-year revenue growth.
Market effects
AI-driven memory and storage names may see similar post-earnings volatility if guidance and gross margin trajectories lag expectations.
US tech and semiconductor-adjacent sentiment could soften if investors generalize the “beat but guide down” pattern.
Data-center storage demand expectations tied to AI infrastructure buildouts may be repriced globally if margin compression signals pricing pressure.
Counterpoint
Management’s margin gap may be temporary due to quarter-to-quarter pricing fluctuations, and long-term agreements at higher rates could reduce the margin concern.
Key entities
- companyWestern Digital
Storage maker whose Q4 results beat but Q1 guidance and gross margin range disappointed, triggering an 11% extended selloff.
- companySeagate Technology
Rival referenced for signaling a gross margin level that was higher than Western Digital’s range.
- companyIntel
Used as an example of a prior earnings beat that still saw a late-July decline.
- companyFigma
Used as an example of a Q2 earnings beat that was overshadowed by AI investment costs.
- companyReddit
Used as an example of a strong earnings report followed by a late-July drop.


