美股三大指数收盘涨跌不一 道指涨0.55%，标普500指数涨0.01%，纳指跌0.44%

Group 1 - The three major U.S. stock indices closed mixed, with the Dow Jones Industrial Average rising by 0.55%, the S&P 500 Index increasing by 0.01%, and the Nasdaq Composite Index declining by 0.44% [1]