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tzdsgn · 2023年07月21日

risk exposure

NO.PZ2022122701000039

问题如下:

An advantage of a returns-based style analysis is that such analysis:

选项:

A.

is comparable across managers.

B.

is suitable for portfolios that contain illiquid securities.

C.

can effectively profile a manager’s risk exposures using a short return series.

解释:

Correct Answer: A

Returns-based style analysis on portfolios of liquid assets is generally able to identify the important drivers of return and the relevant risk factors for the period analyzed, even for complicated strategies. In addition, the process is comparable across managers and through time. If the portfolio contains illiquid securities, the lack of current prices on those positions may lead to an underestimation of the portfolio’s volatility in a returns-based style analysis. Longer return series generally provide a more accurate estimate of the manager’s underlying standard deviation of return.

基于holding和return的方法是不是都无法揭露risk exposure,也都无法适用于评价illiquid 的资产

1 个答案
已采纳答案

笛子_品职助教 · 2023年07月23日

嗨,努力学习的PZer你好:


基于holding和return的方法是不是都无法揭露risk exposure,也都无法适用于评价illiquid 的资产


理解正确。因为illiquid资产,波动性和收益都会有失真。所以完全基于收益率波动率数据做分析,并不准确。


也就是解析里说的:

如果投资组合包含非流动性证券,那么在基于回报的风格分析中,这些头寸缺乏当前价格可能会导致低估投资组合的波动性。较长的回报序列通常可以更准确地估计经理的基本回报标准差。

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虽然现在很辛苦,但努力过的感觉真的很好,加油!