周二（2月25日）纳斯达克100指数隔夜下跌逾1%，大型科技股成为拖累，投资者在等待英伟达最新财报。即便对于美国科技板块的一点点动摇都可能产生很大影响。英伟达市值超过3万亿美元，在指数中权重仅次于苹果。截止上周五，期权交易者押注该公司在公布财报后的股价波动为7.7%，而过去8个季度财报后平均波动为9.2%。美股今年以来表现落后于大多数其他主要市场，和预期中特朗普政策有助于维持其主导地位的预期...
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