--- title: 费城半导体指数涨幅收窄至2% source: 每日经济新闻 datetime: 2026-07-31T21:45:35+08:00 importance: 0 canonical_url: https://finance.sina.com.cn/roll/2026-07-31/doc-iniktkax0838294.shtml --- 每经AI快讯,7月31日,费城半导体指数涨幅收窄至2%,此前一度大涨5%,报11612.38点。