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VIX (CBOE Volatility Index) Definition | Investopedia
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日期:2025-05-01
The first VIX, introduced by the CBOE in 1993, was a weighted measure of the implied volatility of eight S&P 100 at-the-money put and call options. Ten years later, it expanded to use options based on a broader index, the S&P 500, which allows for a more ...看更多