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Monthly and weekly expirations in VIX options are available and trade during U.S. regular trading hours and during a limited global trading hours session (8:15pm ET - 9:25am ET). Additionally, the VIX Index is calculated and disseminated overnight, providing market participants with real-time volatility information whenever news breaks.
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The VIX Index settlement process is patterned after the process used to settle A.M.-settled S&P 500 Index options. The final settlement value for Volatility Derivatives is determined on the morning of their expiration date (usually a Wednesday) through a Special Opening Quotation ("SOQ") of the VIX Index. By providing market participants with a mechanism to buy and sell SPX options at the prices that are used to calculate the final settlement value for Volatility Derivatives, the VIX Index settlement process is "tradable."
The Cboe Volatility Index® (VIX® Index) is considered by many to be the world's premier barometer of equity market volatility. The VIX Index is based on real-time prices of options on the S&P 500® Index (SPX) and is designed to reflect investors' consensus view of future (30-day) expected stock market volatility. The VIX Index is often referred to as the market's "fear gauge".
CFA Institute Research Foundation
University of Massachusetts
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