2倍做多MU ETF-Direxion（代码：MUU）今日夜盘大跌5.09%，引起了市场的关注。
消息面上，该ETF的标的股美光科技在5月累计飙升超80%、市值突破万亿美元后，技术面出现严重超买信号。市场数据显示，美光14天RSI已远超70的超买阈值，成为当前美股超买最严重的个股之一。多位分析师此前已提示动量交易风险，指出在股价经历大幅上涨后，短期回调压力显著积聚。
作为一只2倍杠杆ETF，2倍做多MU ETF-Direxion将美光科技的回调幅度放大传导至该产品，从而在夜盘出现明显回落。这反映了杠杆产品在标的股波动时的放大效应。
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