美股开盘，道指跌0.04%，纳指涨0.01%，标普500指数涨0.05%

Core Viewpoint - The U.S. stock market opened with mixed results, showing slight declines in the Dow Jones and slight gains in the Nasdaq and S&P 500 indices [1]. Group 1 - The Dow Jones Industrial Average decreased by 0.04% at the market opening [1]. - The Nasdaq Composite Index increased by 0.01% at the market opening [1]. - The S&P 500 Index rose by 0.05% at the market opening [1].