美股三大股指期货跌幅扩大，道琼斯指数期货跌0.19%

Group 1 - The core viewpoint indicates that U.S. stock index futures are experiencing a decline, with the Dow Jones index futures down by 0.19% [1] - The S&P 500 index futures have decreased by 0.28% [1] - The Nasdaq 100 index futures are down by 0.46% [1]