老师,第一句话我理解,充分分散化后,portfolio和benchmark的相关性大,active risk全由active share导致。
第二句话没理解,①number of security is large是portfolio的number of security么;②如果number of security is large是portfolio的number of security,那么portfolio和benchmark的相关性大,active risk应全由active share导致,而不是active risk attributed to active share is smaller