Why Western Digital (WDC) fell 16.91%
Western Digital (WDC) fell 16.91% on November 6, 2026 — Storage selloff tied to Microsoft neocloud fears.
What happened
Western Digital fell 18.3% alongside the memory and storage group in a broad tech selloff. The shared catalyst cited was Microsoft increasing oversight of neocloud providers amid data center delays and rising costs.
Why it moved
WDC makes hard drives used in data centers, so concerns about the pace of AI infrastructure buildouts and rising costs hit it along with the memory names. The same demand signal drives the whole group.
Why it matters
Within AI Memory, AI data demand has supported storage pricing for months. Today's drop shows that support weakening as AI-spend doubts build.
What would break the thesis
If data center buildouts proceed on schedule and the broad selloff eases, WDC's storage demand story can recover. Confirmed capex cuts by hyperscalers would extend the decline.