The S&P VIX Index (VIX) traded at 18.62 in mid-afternoon action after topping 19 earlier in the session. On Friday afternoon, ...

The VIX index has been around for decades, measuring the implied volatility of the S&P 500 stocks, the most diversified U.S. stock market index. Implied volatility is a consensus sentiment ...

Hedging stock-market risk by buying VIX calls has become such a popular trade that it could turn into a destabilizing force, some strategists warn. More than 1 million call options on the Cboe ...

The Cboe Volatility Index, an options-based gauge of expected volatility in the S&P 500 widely known by its trading symbol, VIX, jumped Monday morning to its highest level since December.