三大指数期货：8月18日标普、纳指、道指均下跌

Core Insights - S&P 500 futures declined by 0.13%, indicating a slight bearish sentiment in the market [1] - Nasdaq 100 futures fell by 0.02%, reflecting minimal movement in tech stocks [1] - Dow Jones futures decreased by 0.28%, suggesting a more pronounced drop in industrial stocks [1]