美股本周蒸发逾万亿，连跌五周创新低，「七巨头」合计蒸发约8700亿美元

BlockBeatNews

2026-03-28 02:35:42

BlockBeats 消息，3 月 28 日，标普 500、纳斯达克、道琼斯三大指数本周全线下挫，录得自 2022 年以来最长连续五周收跌纪录。科技七巨头单周市值合计缩水约 8700 亿美元，纳斯达克较去年 10 月高点累计回调逾 13%。

本周美股在多重利空夹击下大幅走弱。截至周五收盘，道琼斯单日重挫 793 点，标普 500 跌至七个月新低，纳斯达克则进一步深入技术性回调区间。标普 500 五百只成分股平均最大回撤已达 17%，纳斯达克成分股平均最大回撤更高达 31%，实际损伤远比指数数字所呈现的更为惨烈。

科技板块首当其冲。Meta 单周暴跌约 12%，系涉童安全诉讼两度败诉叠加裁员消息双重打压所致；Tesla、Amazon 跌幅亦均超 3%；Nvidia 受 AI 资本支出预期收缩拖累，跌近 5%。

「七巨头」整周市值合计蒸发约 8700 亿美元，折合人民币逾 6.3 万亿元。从市场结构来看，此轮下跌的广度与深度均不容低估。尽管主要指数跌幅在 7% 至 13% 之间，但超过半数个股已较各自高点回落逾 20%，进入技术性熊市区间。

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