NO.PZ2015121801000110
问题如下：
With respect to capital market theory, which of the following statements best describes the effect of the homogeneity assumption? Because all investors have the same economic expectations of future cash flows for all assets, investors will invest in:
选项：
A.the same optimal risky portfolio.
B.the Standard and Poor’s 500 Index.
C.assets with the same amount of risk.
解释：
A is correct.
The homogeneity assumption refers to all investors having the same economic expectation of future cash flows. If all investors have the same expectations, then all investors should invest in the same optimal risky portfolio, therefore implying the existence of only one optimal portfolio (i.e., the market portfolio).
想问下，A选项是不是就是CML这条线啊，CML这条线上所有的点，是不是有相同的最优风险组合，即这个最优风险组合就是大盘的组合。但是随着每个人的无差异曲线的不同，选择的无风险资产和风险资产的权重不同，所以承担的实际风险量不同。
还是说，投资者对所有资产预期相同的话，那么选择的无风险资产和风险资产的权重也会相同，就是只选择切点那个点的组合，而不是CML那条线的组合？
