周二盘前，纳指三倍做多ETF（TQQQ）大跌5%，主要受到科技股估值担忧和美联储政策不确定性的影响。
美股期货普遍下跌，其中纳斯达克100指数期货跌幅最大，达1.1%。华尔街顶级投行高管警告，尽管企业盈利强劲，但当前估值水平令人担忧，未来12至24个月内可能出现超过10%的回调。高盛和摩根士丹利的CEO均表示，科技股估值已经充分，市场可能面临大幅抛售。
此外，美联储官员近期就货币政策前景发表的矛盾言论加剧了市场对12月政策走向的不确定性。美联储理事库克表示支持近期的降息决定，但还没有就12月是否降息做出决定。这种政策不确定性进一步加剧了市场的谨慎情绪。
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