Abstract
In May, 2012, Chicago Board Options Exchange, CBOE, published a new regulatory circular, extending the listings of weekly options. Under this new rule, weekly options trading has become more active than before. Therefore, in this article, we study the volatility index, VIX, with weekly options data based on the published VIX algorithm. We first inspect the change of its term structure. Then, we examine the relation between the S&P 500 index and this VIX. Finally, we investigate its forecasting ability and information content for future realized volatility. Our empirical findings suggest that the VIX calculated with weekly options data is more effective. It contains more information for future realized volatility, and its forecasting ability is also superior.