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坏呼呼嘿嘿 · 2023年06月08日

请问这个考试时候明确是要用几何平均去算吗?

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NO.PZ202206140600000608

问题如下:

Based on the information provided in Exhibit 2, Fund C’s manager has a downside capture closest to:

选项:

A.82.38%. B.107.70%. C.129.33%.

解释:

Solution

A is correct; 82.38% is the downside capture ratio, as shown in this table.


UC measures capture when the benchmark return is positive. DC measures capture when the benchmark return is negative. CR is the upside capture divided by downside capture, where

UC(m, B, t) = up capture for manager m relative to benchmark B for time t

DC(m, B, t) = down capture for manager m relative to benchmark B for time t

R(m, t) = return of manager m for time t

R(B, t) = return of benchmark B for time t

The geometric mean is calculated by adding 1 to each included value, multiplying them together, and taking the nth root, where n is the number of included values. For example, the geometric mean of R(m) for upside returns is

G = [(1 + 0.123) × (1 + 0.105) × (1 + 0.1333)]1/3 – 1 = 0.1203 = 12.03%

B is incorrect. It is the value for the upside capture, not the downside capture.

C is incorrect. It is the value for the capture ratio, not the downside capture.

如题

1 个答案

吴昊_品职助教 · 2023年06月09日

嗨,从没放弃的小努力你好:


是的,关于CR的计算,原版书正文给出的例题,全都是以几何平均来计算收益率的,所以咱们考试的时候遇到,也必须用几何平均来计算。

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努力的时光都是限量版,加油!

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