Existing studies on the informational content of at-the-money implied volatility (ATMIV) and past realized volatility (PRV) and the relation between the two have mainly focused on a single short forecast horizon and conclude that ATMIV outperforms PRV. We examine the relation between implied and...

In this paper we used a refined approach to estimating the implied volatility from options price in the classic framework developed by Black and Scholes (1973) and Merton (1973). Our study extend the formula previously developed by Corrado and Miller (1996) which works well for the Index options...