西部数据（WDC）今日盘中大跌6.98%，成为当日美股存储板块中跌幅显著的个股之一。
消息面上，本轮下跌的直接导火索是韩国金融监管机构对杠杆ETF的监管收紧。韩国金融服务委员会正式宣布，将提高单一股票杠杆ETF的最低保证金要求，并禁止推出新的单一股票杠杆产品。此举精准打击了存储股交易中一个活跃的投机资金来源，导致资金迅速撤离，引发了板块性的抛售潮。
此外，多重因素共同放大了此次调整的幅度。存储板块此前因AI需求预期年内涨幅巨大，积累了大量的获利盘，在监管利空冲击下，资金集中获利了结。同时，市场也开始重新审视存储行业未来的供需格局与估值水平，对AI资本开支持续性和行业周期拐点的担忧有所升温。科技股整体也面临投资者去杠杆和质疑高估值的压力。
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