Dow Jones Top Markets Headlines at 3 AM ET: South Korean Stocks Tumble, Triggering Second Trading Halt This Week | U.S. ...

South Korean shares tumbled more than 8%, triggering a second trading halt of the week and adding to investor anxiety tied to valuations of companies riding the AI boom. The move came as global risk appetite wavered, and it contrasted with mixed performance on Wall Street. In the U.S., the Dow Jones Industrial Average rose 0.14% while the Nasdaq Composite fell 0.46%, with the S&P 500 slipping slightly. On the geopolitical and macro front, an Iran-linked attack on a cargo ship raised questions about routes and sanctions, while oil prices retreated toward prewar levels. The outlook also drew attention from Fed comments, with New York Fed President John Williams expecting inflation to edge down toward 2%, and U.S. jobless claims dropping to 215,000.