What is the VIX Index that I read about in various option articles?
VIX is the oldest and best known measurement of options volatility. It’s the volatility of the stock market as measured by the S&P 100 (OEX) options. This measurement has been the benchmark of market volatility for more than 15 years. With the emergence of Nasdaq stocks over the last few years, a separate volatility measurement index was needed for those stocks the VXN, a volatility measurement of the Nasdaq-100 (NDX) options using the same methodology as the VIX. Historical data on both indices is available on the CBOE website at: http://www.cboe.com/MktData/. When these indices are rising, it’s a sign that investors are nervous. When they are declining, it tends to indicate complacency.
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