THE SKEWED GAMES. UNDERSTANDING CBOE SKEW INDEX (SKEW)The CBOE Skew Index (SKEW, or "BLACK SWAN" Index) is a financial metric developed by the Chicago Board Options Exchange (CBOE) to measure the perceived tail risk in the S&P 500 over a 30-day horizon.
Tail risk refers to the probability of extreme market movements, such as significant declines or "bl