周五（4月4日）盘前，华尔街投资银行巨头摩根士丹利（Morgan Stanley，股票代码：MS）股价大跌5.31%，引发市场关注。此次股价下跌主要受到美国前总统特朗普最新关税政策的影响，以及整体银行板块走弱的拖累。
据悉，特朗普于本周三宣布了一项新的关税政策。摩根士丹利首席美国经济学家Michael Gapen表示，这项政策"将是继自上世纪70年代初，尼克松取消金本位以来，美国对税收与贸易结构最激进的一次重构尝试"。Gapen还指出，该政策内容远超其预期，可能对美国经济和金融市场产生深远影响。
值得注意的是，不仅摩根士丹利受到冲击，其他美国大型银行股盘前同样出现不同程度的下跌。摩根大通跌1.8%，花旗集团跌1.6%，富国银行跌1.1%，高盛跌1.5%，美国银行跌1.9%。这表明投资者对整个银行业的前景持谨慎态度，担心新的关税政策可能影响银行的跨境业务和整体盈利能力。
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