. . . "racts, or any other financial instruments related to the S&P 500 and the VIX or VIX futures; interest rates; economic, financial, political, regulatory and other events that affect the level of an index or the market price or forward volatility of U.S. stock markets, equity securities included in the S&P 500, the VIX or the relevant futures or option contracts on the VIX; supply and demand as well" .