The volatility of the VIX Index has at times caused the impression that it is less than reliable as an indicator of risk. VIX futures and the volatility surface provide clearer information about the market perception of risk and should be used in conjunction with the VIX Index. The different movements of the VIX Index, VIX futures and of the volatility surface historically fall into four major categories that can be useful in understanding the level and length of equity market risk perceived in the options market.
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