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What it is – How it works
[Courtesy Wikipedia and staff reporters]
AKA “The Fear Gauge”
The CBOE Volatility Index, known by its ticker symbol VIX, is a popular measure of the stock market’s expectation of volatility implied by S&P 500 index options, calculated and published by the Chicago Board Options Exchange (CBOE). It is colloquially referred to as the fear index or the fear gauge.
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According to Wikipedia, the formulation of a volatility index, and financial instruments based on such an index, were developed by Menachem Brenner and Dan Galai in 1986 and described in academic papers. The authors stated the “volatility index, to be named Sigma Index, would be updated frequently and used as the underlying asset for futures and options. … A volatility index would play the same role as the market index play for options and futures on the index.”
In 1986, Brenner and Galai proposed to the American Stock Exchange the creation of a series of volatility indices, beginning with an index on stock market volatility, and moving to interest rate and foreign exchange rate volatility. In 1987, Brenner and Galai met with Joseph Levine and Deborah Clayworth at the Chicago Board of Options Exchange to propose various structures for a tradeable index on volatility; those discussions continued until 1991.
The current VIX concept formulates a theoretical expectation of stock market volatility in the near future. The current VIX index value quotes the expected annualized change in the S&P 500 index over the next 30 days, as computed from the options-based theory and current options-market data.
Assessment
The CBOE retained consultant Robert Whaley in 1992 to develop a tradable volatility instrument based on index option prices.[4] Since 1993, CBOE has published VIX real-time data. Based on historical index option prices, Whaley has computed a data series of retrospective daily VIX levels from January 1986 onward.
Conclusion
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Filed under: "Ask-an-Advisor", Investing | Tagged: CBOE Volatility Index, VIX, Volatility Index | 17 Comments »
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