We study minute-by-minute behavior of the VIX index and trading activity in the underlying S&P 500 options to understand the impact of macro and microeconomic forces on risk neutral volatility. VIX often increases with macroeconomic news, reflects the credibility of Fed monetary stimulus, and...

Using high-frequency data, this study investigates intraday price discovery and volatility transmission between the Chinese stock index and the newly established stock index futures markets in China. Although the Chinese stock index started a drastic falling immediately after the stock index...