Recent developments allow a nonparametric separation of the continuous sample path component and the jump component of realized volatility. The jump component has very different time series properties than the continuous component, and accounting for this allows improved forecasting of future...

This paper examines the impact of option listing in the NASDAQ equity market on the bid-ask spread of the underlying stock. We find that both the market adjusted percentage and dollar spreads decrease with option listing, which is consistent with a value enhancing impact of derivative security...