Intel shares plunged after weak guidance, putting the chipmaker on track for its worst trading day on Wall Street in more than 50 years. The selloff deepened broader investor worry over massive AI spending by Amazon, Intel and other tech giants.

The state-run oil company swung from a year-earlier loss to a third-quarter profit, driven by rising Vaca Muerta shale output and improved refining margins, while cutting net debt to a decade low.