标普500指数低开52.11点，跌幅0.82%，报6287.28点；道琼斯工业平均指数低开349.21点，跌幅0.79%，报43781.77点；纳斯达克综合指数低开291.81点，跌幅1.38%，报20830.64点。

Core Points - The S&P 500 index opened lower by 52.11 points, a decline of 0.82%, settling at 6287.28 points [1] - The Dow Jones Industrial Average opened down by 349.21 points, a decrease of 0.79%, at 43781.77 points [1] - The Nasdaq Composite index opened lower by 291.81 points, a drop of 1.38%, reaching 20830.64 points [1]