道琼斯指数下跌21.63点,或0.04%,报49,170.36,市场开盘后 标准普尔500指数下跌27.18点,或0.39%,报6,936.56,市场开盘后 纳斯达克指数下跌151.30点,或0.64%,报23,558.58,市场开盘后