Core View - The report provides data on the implied volatility index, historical volatility, and their spreads of financial and commodity options, as well as the quantile rankings of implied volatility and volatility spreads, to reflect the relative levels of implied volatility of different options [3][5] Summary by Related Catalog Implied Volatility Index, Historical Volatility, and Their Spread Chart - The financial option implied volatility index reflects the 30 - day implied volatility trend as of the previous trading day, and the commodity option implied volatility index is obtained by weighting the implied volatilities of the two - strike prices above and below the at - the - money option of the main contract, reflecting the implied volatility change trend of the main contract. The larger the difference between the implied volatility index and historical volatility, the higher the implied volatility relative to historical volatility; the smaller the difference, the lower the implied volatility relative to historical volatility [3] Implied Volatility Quantile and Volatility Spread Quantile Ranking Chart - Implied volatility quantile represents the current level of a variety's implied volatility in history. A high quantile means the current implied volatility is high, and a low quantile means it is low. Volatility spread is the implied volatility index minus historical volatility [5]