周一美股早盘走高，创下本月最大跌幅的标准普尔500指数开始反弹，投资者对哈里伯顿等公司财报情绪乐观。
U.S. stocks climbed, with the Standard &Poor’s 500 Index rebounding from the biggest selloff this month amid optimism about earnings from companies such as Halliburton Co.
根据波动率指数，投资者乐观情绪在4月28号到达顶峰，早于股市顶峰5天。
According to the VIX, investor optimism reached its apogee on April 28, five days prior to the day of the top.
根据波动率指数，投资者乐观情绪在4月28号到达顶峰，早于股市顶峰5天。
According to the VIX, investor optimism reached its apogee on April 28, five days prior to the day of the top.
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