问题如下:
The expected returns and standard deviations for three strategic asset allocation are in the table below:
If risk aversion coefficient λ=5,use the utility function in the mean-variance optimization approach, which portfolio is preferred?
选项:
A. Asset allocation 1
B. Asset allocation 2
C. Asset allocation 3
解释:
B is correct.
考点:mean-variance optimization
解析:utility function: 。将表格中数字代入公式,得:
Asset allocation 1: U=9-0.005(5)(144)=5.4,
Asset allocation 2: U=8-0.005(5)(64)=6.4
Asset allocation 3: U=7-0.005(5)(100)=4.5
因此Asset allocation 2所得值最大。
根据这个公式,最后为什么还有一个Rm