每经AI快讯,1月21日,美股存储概念股盘前延续强势,SanDisk涨超3%,西部数据、美光科技涨超2%;奈飞跌近6%,业绩优异但Q1指引逊色;卡夫亨氏跌超3%,伯克希尔拟减持至多3.254亿股公司股票。
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