您好,我最近看到很多人说考这道题,multi factor 比起single factor,除了增加 diversification之外,还会lower active risk还是higher active risk,看到大家都说是lower,所以还想继续追问下(之前问过),我在书里没有看到multi factor 比起single factor 谈到active risk, 但是在P512页,我看到这句话
As we have discussed before, exclusions of this nature contribute to lower diversification and, consequently, higher active risk within a portfolio.
如果lower diversification and, consequently, higher active risk,那么 multi factor 比起single fator有没有可能是higher diversification and, consequently, lower active risk? 谢谢