The Chicago Board Options Exchange’s (CBOE) Volatility Index (INDEXCBOE: VIX) is commonly known as the VIX, which is also its ticker symbol. It is a popular measure of the stock market’s expectation of volatility based on options activity in the S&P 500 index (SPX).
The VIX is a financial benchmark operating in real-time. It gives investors an indication of volatility expectations in the market for the coming 30 days.