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lxwfj9 · 2024年01月28日

还是没完全理解

NO.PZ2022122701000042

问题如下:

Scott Bloomstone, Managing Director at Crestwood, has performed the investment manager due diligence and is presenting his findings to the Riverdale Investment Committee. Bloomstone presents the upside and downside capture ratios of the top three investment manager candidates as shown in Exhibit 1.

The investment manager that exhibits a positive asymmetry in its historical returns is most likely represented by:

选项:

A.

Oakfarm Investments.

B.

Sailboat Asset Management.

C.

TripleCircle Investors.

解释:

Correct Answer: C

Capture ratio is the upside capture divided by the downside capture. It measures the asymmetry of return. A capture ratio greater than one indicates positive asymmetry, or a convex return profile, whereas a capture ratio less than one indicates a negative asymmetry, or concave return profile.

Capture ratio = Upside capture/ Downside capture

Capture ratio calculations for each firm are shown below.

Oakfarm Investments = 75/75 = 1

Sailboat Asset Management = 90/125 = 0.72

TripleCircle Investors = 90/75 = 1.2

按照capture ration >1来判断固然没错

但是,上涨只有90%,不如bench,下跌却只有70%,远好于bench,不是应该下跌的时候表现更好吗?所以不应该是negative偏左吗?

1 个答案

吴昊_品职助教 · 2024年01月28日

嗨,努力学习的PZer你好:


CR和UC&DC研究的维度是不一样的,单看UC和DC大于1还是小于1,可以看出基金经理是underperformance还是overperformance,而CR主要分析的是基金经理的对称性。CR>1,并不等同于基金经理表现好于benchmark。同理,CR<1,并不等同于基金经理表现劣于benchmark。

按李老师在基础班上举的例子来看,UC=0.6,DC=0.5时,CR会大于1。UC=0.6代表的是在上涨的时候,Rp/Rb=0.6,portfolio上涨的不如benchmark,此时基金经理表现不如benchmark,但从CR来看,CR>1。因此CR只能看出对称性,不能看出优或劣于benchmark。

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努力的时光都是限量版,加油!

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