中新经纬2月22日电 周五(2月21日)，美股全线重挫，道指跌1.69%，标普500指数跌1.71%，纳指跌2.2%。联合健康集团跌超7%，英伟达跌逾4%，领跌道指。Wind截图本周，道指累跌2.51%，标普500指数累跌1.66%，纳指累跌2.51%。大型科技股全线下跌，万得美国科技七巨头指数跌2.33%。个股方面，特斯拉跌超4%，英伟达跌逾4%，亚马逊跌超2%，谷歌跌逾2%，微软跌超1%，脸书...
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