Let me explain why it is equivalent to a short put

来源: 于 2005-12-23 08:49:21 [旧帖] [给我悄悄话] 本文已被阅读：次

It is based on a put-call parity. C-P=S-K ==>P=C-S+K=1.1*500+80*500-73.56*500, which is eactly equal to his max payoff. That is it