曾同學(xué)
2025-12-16 16:55“If the factor exposure is fully neutralized, the Active Share will be entirely attributed to the active risk.”這句話什么意思,什么叫factor neutralized,然后為啥是錯(cuò)的呢?請?jiān)斀?/h3>
所屬:CFA Level III > Portfolio Management Pathway
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Simon助教
2025-12-22 11:11
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首先,active risk是衡量portfolio和benchmark的偏離程度的,簡單來說,portfolio和benchmark越不像,active risk就越大。
然后,具體造成portfolio和benchmark不一樣,可能有兩種原因,一種是因子層面偏離factor deviation,一種是個(gè)股層面偏離active share。
如果 factor exposure is fully neutralized,說以因子層面,portfolio和benchmark一樣,那么出現(xiàn)active risk,只能是active share。
所以正確說法是if the factor exposure is fully neutralized, the active risk will be entirely attributed to Active Share
