这个记住就好了。再想不明白,就看corporate finance里的option那章,或者一些讲derevatives的书。 简单说,euro call option's value is max(0, St-K*exp(-rt)). if the option is OTM/ATM, then it's worth at least 0 (not accounting for its time value); if it is ITM, then its intrinsic value should be St-present value of K, ignoring its time value.
[此贴子已经被作者于2009-3-23 5:45:34编辑过] |