1, VIX is a complete volatility index of the S& Chicago Board Options Exchange, which can be used to measure the expected annualized volatility of the S & P 500 index in the next 30 days. P 500 index in recent months and call/put option price calculation in next month.

2.VIX is compiled according to the implied volatility of options. In option trading, implied volatility usually represents the expectation of the future risk level of the market, so VIX is often regarded as a weather vane to lead the market. High VIX market often means the spread of panic, so VIX also has the nickname of "panic index" overseas.

Chicago Board Options Exchange was established on April 26th, 1973, and was established by members of Chicago Board of Trade.

Prior to this, options were only over-the-counter transactions among a few American traders. Chicago Board Options Exchange established the options trading market and introduced standardized contracts, which brought revolutionary changes to options trading. The formal establishment of the Chicago Board Options Exchange marks that options trading has entered a new stage of standardization and standardization. Chicago Board Options Exchange has successively introduced call options and put options, both of which have been successful.