Group 1: Index Explanation - The implied volatility index of financial options reflects the 30 - day implied volatility trend as of the previous trading day. The implied volatility index of commodity options is obtained by weighting the implied volatilities of the two - strike options above and below the at - the - money option of the main contract, reflecting the implied volatility change trend of the main contract [3] - The difference between the implied volatility index and historical volatility indicates the relative level of implied volatility compared to historical volatility. A larger difference means higher implied volatility relative to historical volatility, and a smaller difference means lower implied volatility relative to historical volatility [3] - Implied volatility quantile represents the historical level of the current variety's implied volatility. A high quantile means the current implied volatility is high, and a low quantile means the current implied volatility is low [4] - Volatility spread is the difference between the implied volatility index and historical volatility [4] Group 2: Implied Volatility Quantile Ranking - For the 50ETF, the implied volatility quantile is 0.80, and the historical volatility quantile is 0.76 [5][7] - For the 300 Index, the implied volatility quantile is 0.78, and the historical volatility quantile is 0.71 [5] - For other varieties such as Tianjun, Yingge, etc., their implied and historical volatility quantiles are also provided in the report [5] Group 3: Volatility Spread Chart - The report presents the IV - HV differences of various financial and commodity options including 300 Index, 50ETF, 1000 Index, 500ETF, silver, soybean meal, etc. through charts, showing the relationship between implied volatility and historical volatility for each option [8]