Intel's shares fell 30% on Friday, wiping out nearly $150 billion in market capitalization in a single day — the largest single-day loss in the company's history, according to Tom's Hardware. The selloff spread across the chip sector: roughly $1 trillion in semiconductor market capitalization was erased on the day, based on intraday estimates by Benzinga cited in the report.
The trigger was Intel's financial guidance, driven by an anticipated drop of more than 20% in sales at its client computing and physical AI group (CCPG), the company's main cash cow. Per Tom's Hardware, CCPG generated $8.1 billion in revenue during Q3 2026, down 5% year-over-year and 9% sequentially. Weaker demand and increased competition reduced client processor shipments by 14% year-over-year, partially offset by a 9% increase in average selling prices. CCPG accounted for nearly half of Intel's roughly $16.5 billion in quarterly revenue. Intel guided Q4 revenue to between $15 billion and $16 billion, and the company told investors it expects the client PC market to decline 10% in 2027 compared to 2026 as elevated memory prices and component shortages weigh on PC prices and demand.
The PHLX Semiconductor Sector Index (SOX), which tracks 30 major semiconductor companies, plunged 9.14%, or 1,052.82 points, to 10,465.38 as of 2:31 PM ET that day, Tom's Hardware reported. Intel was the largest loser by percentage, but other names moved sharply too: Arm fell 12.68%, AMD 12.48%, Qualcomm 12.14%, Applied Materials 8.73%, ASML 8.13%, Lam Research 8%, Micron 7.28%, and Broadcom 7.1%. Nvidia dropped 5.66%, which the outlet notes translates to around $270 billion — meaning Nvidia lost more market capitalization in absolute dollar terms than Intel did, despite the smaller percentage move.
The downturn also reached server makers and cloud infrastructure vendors: Dell fell 12.67%, HPE 8.10%, Supermicro 6.96%, and Oracle 6.88%, according to the report. Tom's Hardware, citing Reuters, notes that investors are increasingly questioning the scale of capital investment required to expand AI infrastructure and the sustainability of that spending — a framing that puts this selloff squarely in AI-capex territory, not just a PC-market story.
For teams planning fab allocation and CPU procurement, the mechanics behind the drop matter more than the headline number. Intel's own guidance ties its data center upside to supply: the company says it expects its data center business to keep growing in 2027, but that industry-wide supply constraints will limit how much of that demand it can actually fill. That is the planning risk — not that data center demand evaporates, but that the capacity to serve it doesn't scale with the order book, even at a company explicitly steering sales mix toward more expensive data center parts as client volumes shrink.
Not every chip-adjacent company moved the same way, which is itself a signal about what the market was actually pricing. Apple fell just 1.66% despite being, by Tom's Hardware's count including iPhone A-series SoCs, the world's largest supplier of microprocessors by volume. The outlet attributes Apple's insulation to its different business model — it designs its own silicon and captures device-level revenue rather than selling processors into a PC supply chain exposed to memory pricing — and to demand dynamics tied to smartphone replacement cycles rather than PC refresh cycles. The piece argues investors were not dumping semiconductor exposure broadly so much as repricing the profitability and growth assumptions baked into specific companies' capital spending plans.
The lesson for infrastructure planning isn't that AI silicon demand is collapsing; the guidance Intel gave points the other way on the data center side. It's that supply-chain volatility at this scale can hit procurement timelines independent of your own demand forecast — so capacity contracts and fab-allocation commitments need buffer built in for vendor-side shocks that have nothing to do with your workload.