WDC Research Update — September 19, 2026
Updated Thesis
Western Digital designs and manufactures hard disk drives and flash-based storage for data centers, client devices, and consumer markets, and it is currently enjoying an extraordinary demand surge tied to AI infrastructure buildouts. In the most recent quarter, revenue grew 43.8% year over year and earnings grew 1143.2% year over year, while trailing twelve-month gross margin reached 48.9%, operating margin 34.9%, and net margin 72.9%. The net margin is inflated by non-cash other income, likely a deferred-tax valuation-allowance release, so normalized earnings power is lower than the headline suggests.
The investment grade as of this refresh is C — average business quality. Medium-tier business, very expensive valuation with 16.8% downside to $367.30 fair value.
Key Metrics at a Glance
- Revenue growth: +43.8% year over year
- Net margin: 72.9%
- Fair value upside: -16.8% to our estimate of $367
Current price: $441.36
These figures reflect our most recent data pull and are one input into a multi-factor valuation framework.
Our 12–18 Month Outlook
Quality companies held over a multi-year horizon benefit from compounding fundamentals and the patience to ride through short-term volatility. Western Digital Corporation remains in our covered universe with a average-quality assessment. We update research when material data changes — earnings revisions, management shifts, or regime changes in valuation — not on every price fluctuation.
Long-term accumulation of quality businesses at fair or better prices is the core of the Patient Accumulator approach. Research updates like this one inform whether to add, hold, or wait for a better zone — not whether to react to short-term price moves.
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