答案說描述的volatility skew是正確的,但我沒看懂。implied volatility increases for put options at strike prices that are lower than the current stock price,我的理解就是看跌期權(quán)的執(zhí)行價低于股票價,這個難道不是ITM的看跌期權(quán)嗎?ITM的看跌期權(quán)不是在波動率曲線的右邊么?那看上去這句話還有后面那句話描述的應(yīng)該是左低右高的波動率曲線?