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.

Intel has installed the first major structural truss at its long-delayed chip factory in Ohio, marking a visible construction milestone. The company has not yet announced a major outside customer for the plant, which is running at least five years behind schedule.