美股三大股指短线走低，标普500指数涨幅收窄至0.37%，道指涨幅收窄至0.2%，纳指涨幅收窄至0.6%。

Core Viewpoint - The major U.S. stock indices experienced a short-term decline, with the S&P 500 index's gain narrowing to 0.37%, the Dow Jones Industrial Average's gain narrowing to 0.2%, and the Nasdaq Composite's gain narrowing to 0.6% [1] Summary by Category - Market Performance - S&P 500 index gain narrowed to 0.37% [1] - Dow Jones Industrial Average gain narrowed to 0.2% [1] - Nasdaq Composite gain narrowed to 0.6% [1]