Report Summary 1. Report Industry Investment Rating - No information provided on the industry investment rating [2][3][4][5] 2. Core Viewpoints - On December 26, the market showed a volatile trend with increased trading volume. The Shanghai Composite Index recorded an eight - consecutive - day gain despite two intraday dips. The short - term sentiment deviated from the rise - fall ratio, with nearly 3,400 stocks falling but nearly 100 stocks hitting the daily limit. The electrolyte, lithium ore, and industrial metal concepts led the gains, while the lithography machine, optical chip, and OCS concepts led the losses [5] 3. Summary by Relevant Catalogs 3.1 Market Review - **Index Performance**: The closing prices of the Shanghai 50, CSI 300, and CSI 1000 were 3045.4036, 4604.27, and 4736.66 respectively. The turnovers were 34.10 billion yuan, 175.40 billion yuan, and the trading volumes were 0.41 billion and 266.26 billion respectively. The price - to - earnings ratios were not provided in a straightforward way, but the relevant data shows the market performance of these indices [3] - **Options Trading**: For the Shanghai 50 index options, the trading volume of call options was 3.54 million contracts, put options was 2.47 million contracts, and the open interest was 5.10 million contracts. For the CSI 300 index options, the trading volume of call options was 13.58 million contracts, put options was 9.03 million contracts, and the open interest was 16.10 million contracts. For the CSI 1000 index options, the trading volume of call options was 32.12 million contracts, put options was 19.53 million contracts, and the open interest was 27.04 million contracts. The PCR (put - call ratio) for each index was also provided, with values of 0.68, 0.71, and 0.98 respectively [3] 3.2 Volatility Analysis - **Historical Volatility and Volatility Cone**: The historical volatility and volatility cones of the Shanghai 50, CSI 300, and CSI 1000 were presented, including the minimum, maximum, 10%, 30%, 60%, 90% percentile values, and the current values. The historical volatility was analyzed for different time periods such as 5 - day, 20 - day, 40 - day, 60 - day, and 120 - day [3][4] - **Volatility Smile Curve**: The volatility smile curves of the Shanghai 50, CSI 300, and CSI 1000 for the next - month at - the - money implied volatility were also shown, with different strike prices and corresponding implied volatility values [3][4]

1. Report Industry Investment Rating - No relevant information provided 2. Core Viewpoints of the Report - On December 26, the broader market showed a volatile trend with increased trading volume. The Shanghai Composite Index recorded an eight - consecutive - day gain after two intraday dips were recovered. The commercial space concept attracted capital inflows in the afternoon, while other sectors faced significant long - short divergence. The short - term sentiment deviated from the gain - loss ratio, with nearly 3,400 stocks falling but nearly 100 stocks hitting the daily limit. The electrolyte, lithium ore, and industrial metal concepts led the gains, while the lithography machine, optical chip, and OCS concepts led the losses [5] 3. Summary by Relevant Catalogs 3.1 Market Review - Index Performance - The closing price of the Shanghai 50 Index was 3,045.4036 with a turnover of 34.1 billion yuan, a trading volume of 0.41 billion, and a daily change of 0.32%. The closing price of the CSI 300 Index was 4,604.27 with a turnover of 175.4 billion yuan, a trading volume of 0.35 billion, and a daily change of 266.26. The closing price of the CSI 1000 Index was 4,736.66, and its specific turnover and trading volume were not clearly stated [3] 3.2 CFFEX Stock Index Options Trading Situation - For the Shanghai 50 Index options, the trading volume of call options was 3.54 million contracts, and that of put options was 2.47 million contracts. The open interest of call options was 5.10 million contracts, and that of put options was 3.03 million contracts. The trading volume PCR was 0.68, and the open interest PCR was 1.07. For the CSI 300 Index options, the trading volume of call options was 13.58 million contracts, and that of put options was 9.03 million contracts. The open interest of call options was 4.55 million contracts, and that of put options was 0.50 million contracts. The trading volume PCR was 0.71, and the open interest PCR was 9.42. For the CSI 1000 Index options, the trading volume of call options was 32.12 million contracts, and that of put options was 19.53 million contracts. The open interest of call options was 27.04 million contracts, and that of put options was 12.58 million contracts. The trading volume PCR was 0.64, and the open interest PCR was 0.98 [3] 3.3 Volatility Analysis - **Shanghai 50 Volatility Analysis**: The historical volatility chart and volatility cone of the Shanghai 50 Index were presented, including data such as the 5 - day, 20 - day, 40 - day, 60 - day, and 120 - day historical volatilities, as well as the minimum, 10%, 30%, 60%, 90%, and maximum values. The volatility smile curve and the next - month at - the - money implied volatility were also shown [3][4] - **CSI 300 Volatility Analysis**: Similar to the Shanghai 50 Index, the historical volatility chart, volatility cone, volatility smile curve, and the next - month at - the - money implied volatility of the CSI 300 Index were provided [4] - **CSI 1000 Volatility Analysis**: The report included the historical volatility chart, volatility cone, volatility smile curve, and the next - month at - the - money implied volatility of the CSI 1000 Index [4]