Western Digital (WDC): 60% Margins on Spinning Metal [Q1 2027]

Western Digital’s Q1 2027 proves that legacy spinning hard drives can generate software-like gross margins when AI storage supply is capped—even if the market sold off over clean-room CapEx fears.

In ~10 minutes:

- Why WDC’s CapEx doubled to $227M without adding drive unit capacity 💿

- How rising DRAM and NAND prices slowed hard drive cost declines

- Top seven hyperscalers locking in storage visibility out to 2031

- The $105M tax adjustment making GAAP and Non-GAAP net income identical

- Guiding Q2 revenue to $5.1B with 60%+ Non-GAAP gross margins

Despite beating Q1 consensus with $4.38B in revenue (+55% YoY) and $4.64 Non-GAAP EPS, WDC shares fell over 12% after hours. We unpack the clean-room physics of transitioning to 14-platter HAMR drives, why a $317M employee RSU tax withholding ate into free cash flow, and how WDC is engineering dual-pivot drives to steal AI inferencing cache workloads back from flash memory.

Company: Western Digital Corporation (WDC) | Q1 FY2027

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