Stocks close lower as semiconductor selloff deepens; energy and insurers gain — July 17, 2026

The Session

U.S. stocks fell on Friday, July 17, 2026, as a widening rout in semiconductor shares dragged the major indexes lower. The S&P 500 slipped 76.08 points, or 1.01%, to close at 7,457.69; the Dow Jones Industrial Average fell 406.55 points, or 0.77%, to 52,146.42; and the Nasdaq Composite dropped 361.70 points, or 1.40%, to 25,520.24 ^[1][2][3]. The small-cap Russell 2000 held up better, easing 12.35 points, or 0.42%, to 2,962.22 ^[3]. The declines capped a losing week, with the S&P 500 down about 1.6%, the Nasdaq off roughly 2.9%, and the Dow lower by about 0.9% ^[2].

The session was driven by a deepening selloff in chip stocks, which pushed the PHLX Semiconductor Index into technical bear-market territory after it fell about 11% for the week and roughly 24% from its late-June high ^[4][5]. Sentiment was hit by the debut of a new AI model from Chinese startup Moonshot, which the company said performs on par with leading systems from OpenAI and Anthropic, reviving concerns about AI-infrastructure spending and stretched valuations ^[4]. Escalating U.S.-Iran tensions lifted crude oil prices and added to a risk-off tone ^[4]. Market breadth was negative, with declining issues outpacing advancers ^[6].

Sector performance was mixed and defensive: energy was the standout gainer alongside consumer staples, which rose about 2.9%, while information technology fell about 1.8% and communication services led decliners, down about 2.9%, weighed by Netflix ^[7]. Amid the chip weakness, Nvidia's decline allowed Apple to reclaim its position as the world's most valuable publicly traded company ^[2]. In bonds, the yield on the 10-year Treasury note finished at 4.55% ^[8].