特朗普讲话后，美股股指收窄涨幅，道指涨幅收窄至0.4%，标普500指数接近持平，纳指跌0.4%。

Group 1 - After Trump's speech, the U.S. stock indices narrowed their gains, with the Dow Jones increasing by 0.4% [1] - The S&P 500 index approached flat, indicating minimal movement [1] - The Nasdaq composite index declined by 0.4%, reflecting a negative sentiment in tech stocks [1]