美股开盘涨跌不一，道琼斯指数涨0.14%，标普500指数跌0.26%，纳斯达克综合指数跌0.67%

Market Performance - The U.S. stock market opened with mixed results on February 17, with the Dow Jones Industrial Average increasing by 0.14% [1] - The S&P 500 index decreased by 0.26% [1] - The Nasdaq Composite index fell by 0.67% [1]