The three major U.S. stock indexes opened lower on the 14th in New York as investors monitored calls to slow artificial intelligence development and rising oil prices. At 11:10 p.m. Korean time, the S&P 500 was down 35.08 points, or 0.47%, at 7,619.99; the Dow Jones had fallen 83.95 points, or 0.16%, to 52,489.60; and the Nasdaq Composite had dropped 191.48 points, or 0.73%, to 26,143.09. AI-related shares weakened after Anthropic CEO Dario Amodei said on September 12 that progress in frontier models should slow so safety measures can keep pace. OpenAI CEO Sam Altman, SpaceX CEO Elon Musk and Google DeepMind CEO Demis Hassabis also agreed. Higher international oil prices added pressure after Saudi Arabia said drone attacks could lead it to suspend the East-West Pipeline for several weeks.