Zephyr15 发表于 2014-7-2 00:37 
B、偏债型人力资本
Put options contract in the portfolio can also perfectly hedge the risk, which is ...
Correct one word, it was confusing...
Use options contract in the portfolio can also perfectly hedge the risk, which is essentially the same idea as the diversity here. Risk, risk, that is all we are worrying about right now!
[Sorry, can not type Chinese in office...]