Intel shares suffered their worst single day since the 1970s, plunging 29 per cent after the chipmaker issued weak guidance that wiped roughly $140 billion off its market value. The collapse dragged the wider market lower, with the S&P 500 recording its worst session since June as investors reassessed how much of the artificial intelligence boom is priced into technology stocks.
The guidance shock behind the fall in Intel shares
The sell-off was triggered by Intel’s outlook for the current quarter, which came in well below what analysts had pencilled in. The company pointed to softening demand for personal computer chips, with revenue in its client computing and physical AI division falling 5 per cent year on year to $8.1 billion, alongside the impact of plant shutdowns in Israel. For a company that has spent years trying to convince investors its turnaround is real, the numbers landed badly. Readers can follow the market reaction in our markets and money coverage.
Contagion across the chip sector
Intel was not alone. The Philadelphia Semiconductor Index fell more than 7 per cent as AMD dropped around 11 per cent and Nvidia slid over 4 per cent, extending a bruising week for the stocks that have carried this market. As the US market close report describes it, the session turned into a broad de-risking of the AI trade rather than a verdict on one company, with fund managers trimming positions across the sector into the month’s end.
What investors are asking now
The central question is whether this is a healthy correction in an overheated corner of the market or the start of something deeper. Bulls note that demand for computing power has not vanished; bears counter that valuations assumed flawless execution for years. Intel’s own path is harder: it must now rebuild credibility with customers and shareholders at the same time.
Either way, the week has reminded investors that even the defining trade of a market cycle can reverse violently when expectations run ahead of delivery. The coming earnings reports from the rest of the chip sector will show whether Intel’s pain was company-specific or an early warning for the whole industry.
