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Brownie · 2022年12月15日

这道题问asset class 的特点 吗

* 问题详情,请 查看题干

NO.PZ202206210100000504

问题如下:

In the candidates’ responses to Fox regarding the relevant characteristics of asset classes, the statement that is least accurate is:

选项:

A.Kelly’s regarding correlations.

B.Trainor’s.

C.Kelly’s regarding rebalancing.

解释:

SolutioB is correct. Although Trainor is correct that asset classes should be diversifying, low pairwise correlations with other asset classes is not sufficient. An asset class may be highly correlated with some linear combination of the other asset classes even when pairwise correlations are not high. Both of Kelly’s comments are correct: Asset classes should have high within-group correlations but low correlations with other classes. If liquidity and transaction costs are unfavorable for an investment of a size meaningful for an investor, an asset class may not be a suitable investment for that investor.

B is correct. Although Trainor is correct that asset classes should be diversifying, low pairwise correlations with other asset classes is not sufficient. An asset class may be highly correlated with some linear combination of the other asset classes even when pairwise correlations are not high. Both of Kelly’s comments are correct: Asset classes should have high within-group correlations but low correlations with other classes. If liquidity and transaction costs are unfavorable for an investment of a size meaningful for an investor, an asset class may not be a suitable investment for that investor.

A is incorrect. Kelly’s first comment is correct about both the within-group and between class correlations.

C is incorrect. Kelly’s second comment is correct. The criteria that he is referring to is that asset classes should have the capacity to absorb a meaningful proportion of an investor’s portfolio. He is correct in saying that if liquidity and transaction costs are unfavorable for an investment of a size meaningful for an investor, an asset class may not be a suitable investment for the investor.

感觉这也很像阅读理解题。

k的回答中,关于由于要rebalance,所以asset class 要有流动性,要low transaction cost。课件中Asset class 的基本特征中,并不包括这条吧?


3 个答案

lynn_品职助教 · 2022年12月19日

嗨,努力学习的PZer你好:


加油哦

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虽然现在很辛苦,但努力过的感觉真的很好,加油!

lynn_品职助教 · 2022年12月18日

嗨,从没放弃的小努力你好:


pairwise correlation:两两之间的相关性系数。

这里涉及原版书上一个非常细小的结论,diversifying不仅仅要求两两之间相关性系数低,还要求某个资产类型与其它资产大类的组合之间的相关性系数低。

也就是说,不仅A与B、A与C、B与C资产类型两两之间相关性系数低,A与BC组合的相关性系数也要低。

经典题有答案版P10 3.1有讲过。原版书结论用黄色标注:

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

Brownie · 2022年12月18日

谢谢

lynn_品职助教 · 2022年12月18日

嗨,爱思考的PZer你好:


这道题是2018的Mock题,品职放在了经典题Reading5的2.2题,题目其实出得不好,像是咬文嚼字。


k的回答中,关于由于要rebalance,所以asset class 要有流动性,要low transaction cost。课件中Asset class 的基本特征中,并不包括这条吧?


这句话其实也是一个asset class的标准,在基础班讲义的66页。

这句话出发的角度其实是从为客户选定投资的asset class类别出发的,就是说选来做投资的资产类别要考虑到该资产的可投资性,具体表现在流动性和交易成本两个方面。在对客户做资产类别筛选时,要考虑客户的资产量和对投资的一些限制。如果投资一项资产所需要的资金量非常庞大,那么对于一个个人投资者来说并不是适合的投资标的。

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就算太阳没有迎着我们而来,我们正在朝着它而去,加油!

Brownie · 2022年12月18日

能麻烦再解释一下这句话的意思吗?An asset class may be highly correlated with some linear combination of the other asset classes even when pairwise correlations are not high.

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