Western Digital shares fall as margin outlook tempers strong Q4 results
Western Digital (NASDAQ:WDC) shares fell 11% after fiscal Q4 results beat Wall Street estimates but its margin outlook disappointed versus expectations set by Seagate. WDC guided fiscal Q1 2027 non-GAAP gross margin to 55% to 56% and revenue to about $4.1B. Q4 adjusted EPS was $3.56 on $3.75B revenue.
How this was made
The 30-second read
Why it matters
The key trading variable is the pace of margin expansion. Even with revenue and EPS beats, a guidance range viewed as less aggressive than peers’ expectations can drive multiple compression and near-term positioning changes.
Market read
Earnings beat plus a tempered margin outlook is likely to shift traders from “beat-and-raise” expectations to “margin recovery pace” monitoring.
What to watch
The outlook midpoint (55.5%) still implies improvement from the prior quarter (54.4%), so the selloff may overreact to the gap versus already-high consensus rather than absolute deterioration.
Background
Western Digital reported fiscal fourth-quarter results that beat Wall Street estimates, but the market reaction centered on its gross margin outlook.
Ticker impact
Western Digital shares fell 11% after fiscal Q4 beat, but its fiscal Q1 non-GAAP gross margin outlook (55% to 56%) lagged expectations.
Near-term downside or choppy trading risk as investors reprice margin trajectory versus prior high expectations.
The article ties the stock drop directly to the margin outlook missing elevated expectations, despite revenue and EPS beats and strong YoY growth.
Market effects
Read-across risk for HDD/storage peers as investors benchmark margin recovery pace against Seagate’s elevated expectations.
US large-cap tech hardware and storage sentiment may soften if margin guidance disappoints across the group.
Global data-storage demand remains supportive, but guidance-driven margin expectations can swing international storage supply-demand narratives.
Counterpoint
Despite the margin guide, the company still expects sequential margin expansion and strong revenue growth, which could support a rebound if investors focus on demand strength and free-cash-flow trajectory.
Key entities
- companyWestern Digital Corp
Data storage company whose fiscal Q4 results and fiscal Q1 gross margin outlook drove an 11% share drop.
- companySeagate
Rival referenced as setting elevated margin expectations that Western Digital’s outlook did not meet.


