NO.PZ2019012201000037
问题如下:
Presented below is a selection of data on Matt’s portfolio, which contains three assets. Based on the table, the contribution of Matt’s total portfolio variance contributed by Asset Y is closest to:
选项:
A.0.0025.
B.0.0056.
C.0.0088.
解释:
B is correct.
考点:Allocating the Risk Budget
解析:
单个资产对组合风险的贡献度
根据公式,资产Y对组合风险的绝对贡献度计算如下:
老师好,这道题的答案我看懂了,但是XY和YZ这两个组合对于总风险的影响在表格里不是会出现两次么?为什么不乘以二呢?三个资产计算的组合方差,应该是三个平方和加上3个2倍交叉项才对吧?