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老师,对于这道题,请问材料中提到的“a single-factor”model中提到了factor exposure is fully neutralized。请问单个factor做到netralized,是什么意思?
老师,麻烦您给解释一下下边两句话,谢谢: 1. In a single-factor model, if the factor exposure is neutralized, the active risk will be entirely attributable to the Active Share--a consequence of the manager deviating from benchmark weights. 2. The active risk attributed to Active Share will be smaller for more diversified portfolios with lower idiosyncratic risk.
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