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VIX (CBOE Volatility Index)
CBOE Volatility Index - VIX
Image 1 A volatility index for the Chicago Board Options Exchange known by its ticker symbol "VIX". It is calculated by taking a weighted average of the implied volatility from eight calls and puts on the S&P 100 index (OEX.
Image 2 It measures the volatility of the U.S. equity market, many investors say if the VIX goes above 35 then it signals a bottom in the stock market


Call


Capitulation

CBOE

Put