Group 1: Implied Volatility Index and Historical Volatility - The financial option implied volatility index reflects the 30 - day implied volatility (IV) trend as of the previous trading day, and the commodity option implied volatility index is weighted by the IV of the two - strike options around the at - the - money option of the main contract, reflecting the IV change trend of the main contract [2] - The difference between the IV index and historical volatility (HV) indicates the relative level of IV to HV. A larger difference means higher IV relative to HV, and a smaller difference means lower IV relative to HV [2] Group 2: Implied Volatility Quantile and Volatility Spread Quantile - The implied volatility quantile represents the current level of a variety's IV in history. A high quantile means the current IV is high, and a low quantile means the IV is low [3] - The volatility spread is defined as the IV index minus the HV [3] - Implied volatility quantiles for various products are provided, such as EVC (0.67), PVC (0.92), PTA (0.44), etc. [4][6] Group 3: IV - HV Difference Chart - The chart shows the IV, HV, and IV - HV differences for multiple products including 300股指, 50ETF, 1000股指, 500ETF, and many commodity options like silver, soybean meal, corn, etc. [7]

Group 1: Implied Volatility Index and Historical Volatility - The financial option implied volatility index reflects the 30 - day implied volatility trend as of the previous trading day. The commodity option implied volatility index 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: a larger difference indicates that the implied volatility is relatively higher than the historical volatility, while a smaller difference means the opposite [3] Group 2: Implied Volatility and Historical Volatility Graphs - There are graphs showing the trends of implied volatility (IV), historical volatility (HV), and their differences (IV - HV) for various financial and commodity options, including 50ETF, 1000 - stock index, 500ETF, ES, Shanghai Gold, corn, soybean meal, sugar, cotton, rubber, PTA, methanol, iron ore, crude oil, aluminum, zinc, urea, palm oil, rapeseed meal, Shanghai copper, PVC, and rebar [4][6][7][8][9][10][11][12][13][14][15] Group 3: Implied Volatility and Historical Volatility Quantiles - Implied volatility quantiles represent the current implied volatility level of a variety in history. A high quantile means the current implied volatility is high, and a low quantile means it is low [17] - The implied volatility quantile rankings are as follows: PTA (0.78), natural rubber (0.70), etc. [18] - The historical volatility quantile rankings are as follows: PTA (0.94), 50ETF (0.87), etc. [19]