Group 1: Report Information - Report name: Volatility Data Daily Report [1] - Update time: May 15, 2025 [1] Group 2: 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 [2] - 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 [2] Group 3: Implied Volatility and Historical Volatility Charts - Charts show the trends of implied volatility (IV), historical volatility (HV), and their differences (IV - HV) for various products including 300 - stock index, 50ETF, 1000 - stock index, 500ETF, IFR, corn, cotton, rubber, PTA, crude oil, Chinese jujube, iron ore, aluminum, PVC, rebar, zinc, urea, palm oil, etc [3][5][6][7][11] Group 4: Quantile Ranking - Implied volatility and historical volatility quantile rankings are provided for products such as PTA, 50ETF, methanol, etc. For example, the implied volatility quantile of PTA is 0.93, and its historical volatility quantile is 0.79 [13]