文献来源:Pástor?,StambaughRF,TaylorLA.Dofundsmakemorewhentheytrademore?[J].TheJournalofFinance,2017,72(4):1483-1528.
比如,税务局会知晓纺织6IVh业的平均应毛利、流水,VIhc一家企业与平均水平不符6fGQ,能很快反应出来YUT1