Intel's record October plunge puts its foundry bet on the clock

Intel just wrapped its ugliest month ever on Wall Street. The chipmaker told investors Thursday that quarterly revenue will land $1 billion to $2 billion below analysts' estimates, blaming soaring costs for memory and other PC components. The stock collapsed 29% on Friday — its worst single day since the 1970s — finishing October down 45%, the steepest monthly drop on record, according to FactSet. Shares shed another 8% in Monday trading.

The pain lands hardest on Intel's PC business, which still supplies roughly half of total revenue while shoppers increasingly skip upgrades. The growth story sits elsewhere: CEO Lip-Bu Tan says the global server processor market could expand as much as fivefold over the next five years to about $200 billion, and Intel's data center unit grew 78% year over year in the third quarter, hitting $7.3 billion. The problem is Intel says it can't build chips fast enough, citing industry-wide shortages of wafers, substrates and memory — the same squeeze hammering PC sales.

Those shortages are forcing awkward calls. Intel is moving some Oregon factory capacity off its advanced 18A node and onto the older Intel 3 process to crank out more data center wafers. That's the exact capacity Intel needs to woo outside foundry customers onto 18A. David Yoffie, a Harvard Business School professor who spent nearly three decades on Intel's board, told CNBC that prospective customers worry Intel won't have spare capacity beyond its own needs, making it a shaky supplier — and that if no large-scale foundry client signs within a year, the strain on Intel's economics will get "even more dramatically" worse. Intel didn't respond to a request for comment.

The foundry dream has been expensive. Intel has burned half a decade and a big slice of $108 billion in capital expenditures chasing Taiwan Semiconductor Manufacturing Company, and it still has no marquee customer for its most advanced chips. Washington took a 10% stake in August 2025, Nvidia piled in $5 billion, and the stock rocketed sixfold over 10 months before peaking in June. Then the outlook cracked.

Intel's calling card remains the CPU. Nvidia and Advanced Micro Devices GPUs owned the early AI boom, but Intel's processors are what run the virtual machines behind agentic apps like Meta's Muse. Mizuho Securities analyst Jordan Klein said Intel has "more control over their destiny" than most chipmakers because it can manufacture and package its own advanced chips — though he warned that "if you don't have enough capacity, you leave revenue and money on the table." Tan, who replaced ousted CEO Pat Gelsinger in late 2024, has been stingier with foundry spending than his predecessor, waiting for demand before opening the wallet. On Thursday he said "a couple customers" will be announced within the next two quarters.

On the ground, 18A is in high-volume production in Arizona for Intel's own products, with a second fab underway. A first structural truss just went up at the new Ohio site — a project running nearly five years behind schedule. Yoffie flags another snag: Broadcom and Qualcomm may balk at manufacturing with a company that competes against them on products, and he argues spinning off the foundry is "maybe the only solution." Klein figures AMD is the one major chipmaker with zero interest, given the direct CPU rivalry. AMD reports third-quarter results after Tuesday's closing bell, and Yoffie's bigger point stands: TSMC can only build maybe 20-25% of its global capacity in the U.S., and that will take years — so America needs Intel to work.