U.S. Stock Indices Fall for Second Straight Day on July 17 Amid China AI Concerns

According to Yonhapinfomax, U.S. stock indices closed lower for the second consecutive day on July 17. The Dow Jones Industrial Average fell 406.55 points (0.77%) to 52,146.42, the S&P 500 declined 76.08 points (1.01%) to 7,457.69, and the Nasdaq Composite dropped 361.70 points (1.40%) to 25,520.24.

Selling pressure on semiconductor stocks intensified after Chinese AI developer Moonshot released its Kimi K3 model, which demonstrated coding performance surpassing major U.S. competitors while costing approximately 40% less than OpenAI's offerings. The Philadelphia Semiconductor Index fell 1.63%, with Nvidia, TSMC, ASML, and Intel each declining over 2%. Additionally, escalating U.S.-Iran military tensions, with the U.S. expanding its air campaign to include infrastructure targets, weighed on investor sentiment; WTI crude oil futures climbed over 4%.