We investigate the impact of information trading on predicting variation of implied volatility. First, we find that informed traders do trade in the index options market. The predicting biases of implied volatilities on the realized volatility are correlated with the information trading. Second,...

We ask whether option prices contain information on the likelihood and direction of jumps in the underlying stock prices. Applying the partial least squares (PLS) approach to the entire surface of the implied volatilities (IV), we show that option prices can successfully predict downward jumps...