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大吉0511 · 2023年06月15日

The Ash fund will most likely minimize the active risk when combined in the final Amity equity portfolio because of its high covariance with the present fund. The low-covariance funds may reduce overall portfolio volatility but not active risk.

NO.PZ2023010903000065

问题如下:

Another of Langham’s clients, Marianne Quint, sits on the investment committee of the Amity Island Endowment. The $2 billion equity portion of the Amity fund is invested using a global equity index approach. Quint has been charged with identifying an active equity fund to replace 20% of the indexed portfolio. Three candidate funds with similar performance histories, benchmarks, and fees have been identified. Based on the characteristics shown in Exhibit 3, Quint asks Langham to recommend the fund that has demonstrated the best risk-efficient delivery of results.

Langham also identifies the fund that could minimize the active risk of the total $2 billion Amity equity portfolio after replacement is complete.

From Exhibit 3, the replacement candidate fund that, if included, will most likely minimize the active risk of the final Amity equity fund is:

选项:

A.

Ash

B.

Blue

C.

March

解释:

Active risk is a measure of the volatility of portfolio returns relative to the volatility of benchmark returns. The Ash fund will most likely minimize the active risk when combined in the final Amity equity portfolio because of its high covariance with the present fund. The low-covariance funds may reduce overall portfolio volatility but not active risk.

B is incorrect. The low covariance with the Amity portfolio will lower the overall volatility of the fund but not the active risk, because active risk measures the volatility of portfolio returns relative to that of the benchmark: This will be achieved through the substitution of a high-fund.

C is incorrect. The low covariance with the Amity portfolio will lower the overall volatility of the fund but not the active risk, because active risk measures the volatility of portfolio returns relative to that of the benchmark: This will be achieved through the substitution of a high covariance fund.

The Ash fund will most likely minimize the active risk when combined in the final Amity equity portfolio because of its high covariance with the present fund. The low-covariance funds may reduce overall portfolio volatility but not active risk.


请老师解读下这句话,谢谢!

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笛子_品职助教 · 2023年06月15日

嗨,从没放弃的小努力你好:


请老师解读下这句话,谢谢!


The Ash fund will most likely minimize the active risk when combined in the final Amity equity portfolio because of its high covariance with the present fund. The low-covariance funds may reduce overall portfolio volatility but not active risk.


Ash基金在合并到最终的Amity股权投资组合中时,很可能会将主动风险降至最低,因为它与当前基金的协方差很高。低协方差基金可能会降低整体投资组合的波动性,但不会降低主动风险。


同学这里要先理解这道题的含义。

这道题是说,Amity有很低的active risk。现在要把Amity基金中20%换成其他基金,也就是新组合为:80%Amity + 20%其他基金。要求这个新组合,也有很低的active risk。


问其他基金选哪个。


我们可以看到,原来的Amity就已经很好了,现在要换,只要换一个和Amity最像的,就可以了。

因此选ASH基金,它和Amity的相关性最大。

----------------------------------------------
虽然现在很辛苦,但努力过的感觉真的很好,加油!

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