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Amy_ywh · 2023年11月11日

为什么portfolio里面的assets两两相关程度会高于里面任意asset和其他的portfolio里的asset呢?

NO.PZ2023021601000062

问题如下:

In defining asset classes as part of the strategic asset allocation decision, pairwise correlations within asset classes should generally be:

选项:

A.equal to correlations among asset classes. B.lower than correlations among asset classes. C.higher than correlations among asset classes.

解释:

As the reading states, "an asset class should contain homogeneous assets . . . paired correlations of securities would be high within an asset class, but should be lower versus securities in other asset classes."

我们不是需要利用portfolio来降低risk所以会更diversify portfolio, which means we are supposed to decrease the correlation between assets within one portfolio?

1 个答案

Kiko_品职助教 · 2023年11月13日

嗨,努力学习的PZer你好:


within asset classes而不是within one portfolio,需要区分。asset classes是资产分类。同一类的资产(within asset classes)肯定相关程度更高一些,有相同的性质才会被归类为同一类,所以相关程度高。做组合的时候是把相关程度低的资产进行组合,不同资产类别之间(among asset classes)相关程度低,以提高分散化效果,降低risk

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努力的时光都是限量版,加油!

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