美国股市跌幅收窄，道琼斯工业平均指数转涨，标普500指数下跌0.1%。

Core Points - The U.S. stock market experienced a narrowing of declines, with the Dow Jones Industrial Average turning positive while the S&P 500 index fell by 0.1% [1] Group 1 - The Dow Jones Industrial Average showed a positive trend, indicating a potential recovery in certain sectors [1] - The S&P 500 index experienced a slight decline of 0.1%, reflecting ongoing volatility in the broader market [1]