34453535354354 发表于 2016-6-9 19:55 
CM Absolute risk tolerance 是增加的,但是relative risk tolerance 是恒定的,关键是题目里好像没说是abs ...
With constant mix, the percentage allocation to the risky asset is maintained at a fixed
initial percentage through dynamic rebalancing. This is consistent with an investor
whose risk tolerance is independent of the investor's level of wealth.
But the condition in the question ist to increase the risk tolerance with the wealth Level. that's die defination of relative risk tolerance