问题如下:
Assume the exercise price=$20, risk-free rate=3%, the expiration=0.5, and the spot price of the underlying=$30, the minimum price of European call is:
选项:
A.$10.29
B.$10
C.$0
解释:
A is correct. The minimum European call price=30-20/(1+0.03)^0.5=10.29
请问这个expiration是什么东西?为啥计算时候放在T-t的位置?