U.S. Chip Stocks Head for Worst Week in Over 15 Months as AI Trade Wobbles

U.S. semiconductor stocks are on track for their steepest weekly decline in more than 15 months, as investors question the durability of the artificial-intelligence spending boom that had driven the sector to record highs. The selloff intensified in mid-July 2026, dragging memory makers, chip designers and equipment suppliers sharply lower and rippling into broader equity markets.