NO.PZ2016071602000011
问题如下:
A risk manager assumes that the joint distribution of returns is multivariate normal and calculates the following risk measures for a two-asset portfolio:
If asset 2 is dropped from the portfolio, what is the reduction in portfolio VAR?
选项:
A.USD 15.0
B.USD 38.3
C.USD 44.0
D.USD 46.6
解释:
B is correct. This is 61.6 minus the portfolio VAR of asset 1 alone, which is USD 23.3, for a difference of 38.3.
老师组合中两个资产拿掉一个资产不应该用CVaR来考虑吗?所以拿掉的部分不就是组合中减少的VAR了吗?那不就是44吗?这个思路错在哪里