寒武纪入选上证50指数，宽基指数基金追涨杀跌的隐优

<p style="color:#1C1D20;font-weight:normal;font-size:16px;line-height:30px;font-family:Helvetica, Arial, sans-serif;hyphens:auto;text-align:justify;" data-flag="normal">上证50指数调整引发关注，寒武纪被纳入背后有何玄机？宽基指数基金也在追涨杀跌？</p>