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The VIX is the CBOE Volatility Index, with CBOE being the Chicago Board Options Exchange. VIX is often referred to as the "investor fear gauge." The greater the fear, the higher the VIX level

Expanded Definition

The CBOE Volatility Index was introduced in 1993. It "measures market expectation of near term volatility conveyed by stock index option prices," according to [1] this webpage from the CBOE. The VIX tracks the S&P 500.

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