Group 1: Explanation of Volatility Indexes - Financial option implied volatility index reflects the 30 - day implied volatility trend as of the previous trading day, while the commodity option implied volatility index is weighted by the implied volatilities of the two - strike options above and below the at - the - money option of the main contract, showing 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 to historical volatility. A larger difference means higher implied volatility relative to historical volatility, and a smaller difference means lower [3] Group 2: Volatility Index Graphs - There are graphs showing the implied volatility (IV), historical volatility (HV), and their differences (IV - HV) for various financial and commodity options, including 300 - stock index, 50ETF, 1000 - stock index, 500ETF, silver, gold, soybean meal, corn, sugar, cotton, methanol, rubber, iron ore, PTA, copper, crude oil, aluminum, PVC, rebar, zinc, urea, palm oil, etc [4] Group 3: Implied Volatility and Volatility Spread 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 [5] - The document provides the implied volatility quantile rankings for different options such as 50ETF (0.70), 300 - stock index (0.82 and 0.57), corn (0.41), PTA (0.37 and 0.41), etc [6]