以下是引用chalanda在2011-6-8 3:36:00的发言:
同志们,大家相信我,黄金的第一个题是risk-free rate,大家算算initial investment和payment就知道了
initial investment = sum(z_i*F_i) where z_i is the discount factor, F_i 是future price
payment = swap rate = sum(z_i*F_i)/sum(z_i)
return就是1/z_i的average 就是risk-free rate
相信你没用,得信CFA哥。可是人家不出来说话,呵呵 |