Intel's weaker-than-expected outlook on Friday set off a broad semiconductor selloff that erased roughly $1 trillion in market value across the sector in a single day. The PHLX Semiconductor Sector Index (SOX), which tracks 30 major chip companies, had fallen 9.14%, or 1,052.82 points, to 10,465.38 as of 2:31 PM ET. Intel was the hardest hit, while losses ran through Arm (-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's 5.66% decline translated to about $270 billion in lost market capitalization, more in absolute dollars than Intel gave up.
The trigger was Intel's client computing and physical AI group (CCPG), which booked $8.1 billion in third-quarter 2026 revenue, down 5% year-over-year and 9% sequentially. Client processor shipments fell 14% year-over-year on softer demand and tougher competition, partly offset by a 9% rise in average selling prices. CCPG supplied nearly half of Intel's roughly $16.5 billion in quarterly revenue and is the company's main cash source. With server processor demand only partly making up the difference, Intel guided fourth-quarter revenue to $15 billion to $16 billion.
Intel told investors the client market will weaken further in the fourth quarter of 2026 and into 2027, as elevated memory prices and shortages of other components push up PC prices and weigh on demand. The company expects the client PC market to shrink 10% in 2027 compared with 2026, a decline that would hit CCPG. Intel still expects its data center business to grow in 2027, but industry-wide supply constraints will cap how much of that demand it can serve.
The damage extended beyond chipmakers. Dell (-12.67%), HPE (-8.10%), Supermicro (-6.96%) and Oracle (-6.88%) lost between roughly 7% and 13% of their value, and Reuters reported that investors are increasingly questioning the scale of capital investment needed to expand AI infrastructure and whether that spending is sustainable. Apple, which sells only client products, slipped just 1.66%, a sign investors see the consumer electronics giant as more insulated from memory prices than Intel. The source article noted the irony that Apple, counting the A-series SoCs in its iPhones, sells substantially more processors than Intel.
The contrast reflects two different business models, according to the report: Intel sells processors to PC makers, while Apple designs its own chips and sells them inside finished devices, capturing revenue from the whole product. Intel's results ride the PC market, while Apple's iPhone business follows the smartphone replacement cycle. Apple is also a major TSMC customer, so its supply chain overlaps with those of AMD, Intel and other chip companies whose shares fell.
For Intel, 2026 has been uneven. The company reached its highest-ever market capitalization of $673.43 billion in mid-June on growing data center CPU sales, strong client product sales and a return to profitability when a $12.5 billion non-cash accounting charge tied to shares issued to the U.S. government is excluded. Since mid-June its capitalization has fallen nearly 50% to $338.91 billion, including $148.68 billion lost in one day, as investors came to see CCPG's performance as heavily dependent on memory prices.
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