volatility smile01 Graphs showing the implied volatilities of re

来源: 于 2011-07-06 20:49:15 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Graphs showing the implied volatilities of renminbi put and call options used to have a lop-sided curved shape known as a “smirk”; now they look like a smile, indicating that bearish bets have caught up with bullish ones.