Report Summary 1. Investment Rating The report does not provide an industry investment rating. 2. Core View The report suggests that with the decline in the stock index option market and the decrease in volatility, investors can consider selling call options at high prices [1]. 3. Summary of Related Content 3.1 Option Market Data Statistics - **Underlying Market Statistics**: The closing prices of the Shanghai - Shenzhen 300 Index, Shanghai 50 Index, and most ETFs declined, while the closing price of the CSI 1000 Index increased slightly. The trading volumes of most underlying assets decreased, such as the Shanghai - Shenzhen 300 Index with a trading volume of 250.82 billion shares, a decrease of 50.66 billion shares [1]. - **Option Market Statistics**: The trading volumes of various options decreased significantly, while the open - interest of most options increased. For example, the trading volume of CSI 1000 index options was 264,630, a decrease of 94,783, and the open - interest was 256,493, an increase of 17,161. The VL - PCR and OI - PCR of most options showed different degrees of change [1]. 3.2 Option Volatility Statistics - **Near - Month Options**: The implied volatility (ATM - IV) of most options decreased, such as the Shanghai 50 index option with an ATM - IV of 17.77%, a decrease of 1.27%. The historical volatility (HV) also showed different trends, with some increasing and some decreasing [4]. - **Next - Month Options**: The ATM - IV of most next - month options also decreased, for example, the Shanghai 50 index option with an ATM - IV of 18.90%, a decrease of 1.52% [4]. 3.3 Option Index Data Statistics - **Each Option Type**: The report presents multiple charts for each option type, including the full - contract PCR chart, the main - contract skewness chart, the volatility cone chart, and the volatility term - structure chart, which can help investors analyze the market conditions of different options [8][12][15].

Report Summary 1. Report Industry Investment Rating No relevant information provided. 2. Core View The report presents a daily overview of the stock index options market, including option trading volume, PCR, and VIX data for various stock index options on August 18, 2025. 3. Summary by Directory Option Trading Volume - On August 18, 2025, the trading volumes of different stock index options were as follows: Shanghai - Shenzhen 50 ETF option was 1876200 contracts; Shanghai - Shenzhen 300 ETF option (Shanghai market) was 1822000 contracts; CSI 500 ETF option (Shanghai market) was 2344800 contracts; Shenzhen 100 ETF option was 177000 contracts; GEM ETF option was 3272800 contracts; Shanghai - Shenzhen 50 stock index option was 55600 contracts; Shanghai - Shenzhen 300 stock index option was 160500 contracts; CSI 1000 option was 359400 contracts [1]. - The detailed breakdown of call, put, and total trading volumes for different stock index options is also provided in Table 1 [20]. Option PCR - The PCR data for different stock index options showed various changes. For example, the turnover PCR of Shanghai - Shenzhen 50 ETF option was 0.40, with a month - on - month change of - 0.09; the position PCR was 1.08, with a month - on - month change of + 0.01. Similar data for other options are presented in Table 2 [37]. Option VIX - The VIX data for different stock index options also had different changes. For instance, the VIX of Shanghai - Shenzhen 50 ETF option was 21.64%, with a month - on - month change of + 2.02%. The data for other options are shown in Table 3 [51].

Report Industry Investment Rating - Not provided Core Viewpoints - The report provides a daily overview of the stock index options market, including option trading volume, PCR, and VIX data for various types of options on August 15, 2025 [1][2][3] Summary by Directory Option Trading Volume - On August 15, 2025, the trading volume of Shanghai Stock Exchange 50 ETF options was 2.2963 million contracts; the trading volume of CSI 300 ETF options (Shanghai market) was 1.9952 million contracts; the trading volume of CSI 500 ETF options (Shanghai market) was 2.1653 million contracts; the trading volume of Shenzhen 100 ETF options was 0.1810 million contracts; the trading volume of ChiNext ETF options was 2.7918 million contracts; the trading volume of Shanghai Stock Exchange 50 stock index options was 0.0640 million contracts; the trading volume of CSI 300 stock index options was 0.2142 million contracts; the total trading volume of CSI 1000 options was 0.3960 million contracts [1] - The table shows the call, put, and total trading volumes of various index ETF options on the same day [20] Option PCR - The turnover PCR of Shanghai Stock Exchange 50 ETF options was reported at 0.49, with a month - on - month change of +0.06; the position PCR was reported at 1.07, with a month - on - month change of - 0.10. Similar data is provided for other types of options [2] - The table presents the turnover PCR, month - on - month change, position PCR, and month - on - month change of various index ETF options [36] Option VIX - The VIX of Shanghai Stock Exchange 50 ETF options was reported at 19.62%, with a month - on - month change of +1.97%. Similar data is provided for other types of options [3] - The table shows the VIX and month - on - month change values of various index ETF options [47]

Report Summary 1. Report Industry Investment Rating - No information provided in the given content. 2. Report's Core View - The report presents a daily overview of the stock index options market, including option trading volume, PCR (Put - Call Ratio), and VIX (Volatility Index) for various types of index options on August 14, 2025 [1][2][3]. 3. Summary by Related Catalogs Option Trading Volume - On August 14, 2025, the trading volumes of different index options were as follows: 127.52 million contracts for SSE 50 ETF options, 109.60 million contracts for SSE CSI 300 ETF options, 128.30 million contracts for SSE CSI 500 ETF options, 12.68 million contracts for Shenzhen 100 ETF options, 309.54 million contracts for ChiNext ETF options, 10.06 million contracts for SSE 50 index options, 21.42 million contracts for CSI 300 index options, and 40.51 million contracts for CSI 1000 index options [1]. Option PCR - The PCR data shows the following: for SSE 50 ETF options, the trading value PCR was 0.43 (a - 0.06 change from the previous period), and the open - interest PCR was 1.16 (+0.12 change). Similar data is provided for other index options, with varying changes in trading value and open - interest PCRs [2][35]. Option VIX - The VIX data indicates that for SSE 50 ETF options, the VIX was 17.65% (+0.07% change from the previous period). Other index options also had their respective VIX values and changes, with some increasing and some decreasing [3][50].

Report Industry Investment Rating - Not provided in the content Core Viewpoint - The report presents the trading data of various index options on August 13, 2025, including trading volume, PCR, and VIX, along with their corresponding changes compared to the previous period [1][2][3] Summary by Directory Option Trading Volume - On August 13, 2025, the trading volume of Shanghai Stock Exchange 50 ETF options was 1.5531 million contracts; CSI 300 ETF options (Shanghai) was 1.604 million contracts; CSI 500 ETF options (Shanghai) was 2.1667 million contracts; Shenzhen 100 ETF options was 0.1983 million contracts; ChiNext ETF options was 3.0954 million contracts; Shanghai Stock Exchange 50 index options was 0.0635 million contracts; CSI 300 index options was 0.1689 million contracts; and CSI 1000 options was 0.3967 million contracts [1] Option PCR - The turnover PCR of Shanghai Stock Exchange 50 ETF options was reported at 0.50, with a month - on - month change of - 0.03; the position PCR was 1.05, with a month - on - month change of + 0.00. Similar data is provided for other types of options, showing different changes in turnover PCR and position PCR [2] Option VIX - The VIX of Shanghai Stock Exchange 50 ETF options was reported at 17.58%, with a month - on - month change of + 1.29%. Other options also had their respective VIX values and month - on - month changes, such as the CSI 300 ETF options (Shanghai) with a VIX of 17.77% and a month - on - month change of + 1.54% [3]

Report Summary 1. Report Industry Investment Rating There is no information about the report industry investment rating in the provided content. 2. Core View of the Report The report provides a daily overview of the stock index options market, including option trading volume, option PCR (Put - Call Ratio), and option VIX (Volatility Index), which helps investors understand the market situation and potential trends of stock index options. 3. Summary by Relevant Catalogs Option Trading Volume - On August 12, 2025, the trading volume of Shanghai Stock Exchange 50 ETF options was 1.2752 million contracts; the trading volume of CSI 300 ETF options (Shanghai market) was 1.096 million contracts; the trading volume of CSI 500 ETF options (Shanghai market) was 1.283 million contracts; the trading volume of Shenzhen 100 ETF options was 0.1268 million contracts; the trading volume of ChiNext ETF options was 1.48 million contracts; the trading volume of Shanghai Stock Exchange 50 stock index options was 0.0516 million contracts; the trading volume of CSI 300 stock index options was 0.1172 million contracts; the total trading volume of CSI 1000 options was 0.2469 million contracts [1]. Option PCR - The turnover PCR of Shanghai Stock Exchange 50 ETF options was reported at 0.53, with a month - on - month change of - 0.14; the position PCR was reported at 1.05, with a month - on - month change of + 0.09. Similar data for other types of options are also provided in the report [2]. Option VIX - The VIX of Shanghai Stock Exchange 50 ETF options was reported at 16.29%, with a month - on - month change of + 0.35%. The VIX and its month - on - month changes of other types of options are also presented in the report [3].

Report Industry Investment Rating - Not provided in the given content Core Viewpoint - The report presents the trading data of various index options on August 11, 2025, including trading volume, PCR, and VIX, to reflect the market situation of index options [1][2][3] Summary by Directory Option Trading Volume - On August 11, 2025, the trading volume of Shanghai Stock Exchange 50 ETF options was 907,200 contracts; the trading volume of CSI 300 ETF options (Shanghai market) was 1,022,500 contracts; the trading volume of CSI 500 ETF options (Shanghai market) was 1,479,600 contracts; the trading volume of Shenzhen 100 ETF options was 152,700 contracts; the trading volume of ChiNext ETF options was 1,519,500 contracts; the trading volume of Shanghai Stock Exchange 50 index options was 44,600 contracts; the trading volume of CSI 300 index options was 116,400 contracts; and the total trading volume of CSI 1000 options was 321,800 contracts [1] - The specific trading volume data of call and put options for each type of option are presented in a table, including call trading volume, put trading volume, and total trading volume [20] Option PCR - The turnover PCR of Shanghai Stock Exchange 50 ETF options was reported at 0.67, with a month - on - month change of - 0.12; the position PCR was reported at 0.96, with a month - on - month change of - 0.01 - The turnover PCR of CSI 300 ETF options (Shanghai market) was reported at 0.58, with a month - on - month change of - 0.20; the position PCR was reported at 1.01, with a month - on - month change of + 0.00 - The turnover PCR of CSI 500 ETF options (Shanghai market) was reported at 0.54, with a month - on - month change of - 0.35; the position PCR was reported at 1.20, with a month - on - month change of + 0.05 - The turnover PCR of Shenzhen 100 ETF options was reported at 0.51, with a month - on - month change of - 0.48; the position PCR was reported at 1.05, with a month - on - month change of + 0.05 - The turnover PCR of ChiNext ETF options was reported at 0.54, with a month - on - month change of - 0.23; the position PCR was reported at 1.05, with a month - on - month change of + 0.10 - The turnover PCR of Shanghai Stock Exchange 50 index options was reported at 0.45, with a month - on - month change of - 0.02; the position PCR was reported at 0.55, with a month - on - month change of - 0.03 - The turnover PCR of CSI 300 index options was reported at 0.38, with a month - on - month change of - 0.11; the position PCR was reported at 0.75, with a month - on - month change of + 0.00 - The turnover PCR of CSI 1000 index options was reported at 0.36, with a month - on - month change of - 0.17; the position PCR was reported at 1.16, with a month - on - month change of + 0.07 [2][35] Option VIX - The VIX of Shanghai Stock Exchange 50 ETF options was reported at 15.95%, with a month - on - month change of + 0.56% - The VIX of CSI 300 ETF options (Shanghai market) was reported at 15.66%, with a month - on - month change of + 0.12% - The VIX of CSI 500 ETF options (Shanghai market) was reported at 19.58%, with a month - on - month change of + 0.50% - The VIX of Shenzhen 100 ETF options was reported at 19.49%, with a month - on - month change of + 0.47% - The VIX of ChiNext ETF options was reported at 25.36%, with a month - on - month change of - 0.23% - The VIX of Shanghai Stock Exchange 50 index options was reported at 17.82%, with a month - on - month change of + 0.79% - The VIX of CSI 300 index options was reported at 17.67%, with a month - on - month change of + 0.29% - The VIX of CSI 1000 index options was reported at 22.25%, with a month - on - month change of + 0.48% [3][50]

Report Industry Investment Rating - Not provided in the content Core Viewpoints - The report presents the trading data of various index options on August 8, 2025, including trading volume, PCR, and VIX, to reflect the market situation of index options [1][2][3] Summary by Directory Option Trading Volume - On August 8, 2025, the trading volume of SSE 50 ETF options was 688,100 contracts; CSI 300 ETF options (Shanghai) was 778,000 contracts; CSI 500 ETF options (Shanghai) was 1,298,800 contracts; Shenzhen 100 ETF options was 99,400 contracts; ChiNext ETF options was 985,800 contracts; SSE 50 index options was 29,100 contracts; CSI 300 index options was 79,300 contracts; and CSI 1000 options was 215,800 contracts [1][20] Option PCR - The turnover PCR of SSE 50 ETF options was reported at 0.78, with a month - on - month change of +0.15; the position PCR was reported at 0.97, with a month - on - month change of - 0.01. Similar data for other options were also provided, showing different changes in turnover and position PCR [2][30] Option VIX - The VIX of SSE 50 ETF options was reported at 15.39%, with a month - on - month change of - 0.37%; CSI 300 ETF options (Shanghai) was 15.54%, with a month - on - month change of - 0.53%; and so on for other options, each with its own VIX value and change [3][47]

Group 1: Investment Rating - No investment rating information provided Group 2: Core View - The report presents the trading data of index options on August 7, 2025, including option trading volume, PCR (Put-Call Ratio), and VIX (Volatility Index) [1][2][3] Group 3: Summary by Section Option Trading Volume - On August 7, 2025, the trading volume of Shanghai Stock Exchange 50 ETF options was 921,700 contracts; CSI 300 ETF options (Shanghai) was 919,400 contracts; CSI 500 ETF options (Shanghai) was 1,376,900 contracts; Shenzhen 100 ETF options was 167,600 contracts; ChiNext ETF options was 1,424,500 contracts; Shanghai Stock Exchange 50 index options was 32,200 contracts; CSI 300 index options was 95,000 contracts; and CSI 1000 index options was 239,300 contracts [1][19] Option PCR - The trading volume PCR of Shanghai Stock Exchange 50 ETF options was reported at 0.64, with a month-on-month change of -0.02; the open interest PCR was reported at 0.98, with a month-on-month change of +0.04. Similar data were provided for other types of options [2][29] Option VIX - The VIX of Shanghai Stock Exchange 50 ETF options was reported at 15.76%, with a month-on-month change of +0.05%. Similar data were provided for other types of options [3][42]

Report Overview - The report date is August 7, 2025, and it focuses on stock index options, suggesting that in a volatile and rising volatility environment with a change in implied volatility correlation, long - position investors can consider a protective put strategy [1] Market Data Statistics Underlying Market Statistics - The closing prices of the Shanghai Composite 50 Index, CSI 300 Index, and CSI 1000 Index are 2798.31, 4114.67, and 6862.15 respectively, with changes of 0.89, 1.18, and 0.84. Their trading volumes are 42.34 billion, 198.64 billion, and 261.39 billion hands respectively, with changes of 1.16 billion, 21.97 billion, and 3.26 billion hands [2] - For various ETFs, such as Shanghai Composite 50 ETF, Huatai - Berich 300 ETF, etc., their closing prices, price changes, trading volumes, and volume changes are also presented in detail [2] Option Market Statistics - The trading volumes and changes, open interests and changes, VL - PCR, OI - PCR, and the strike prices with the largest call and put open interests (near - month) are provided for different index options and ETF options, like Shanghai Composite 50 Index Option, CSI 300 Index Option, etc. For example, the trading volume of Shanghai Composite 50 Index Option is 32374, with a change of 3863 [2] Option Volatility Statistics - The ATM - IV, IV changes, same - term HV, HV changes, Skew, Skew changes, and VIX and its changes are reported for near - month and next - month options of different types. For instance, the near - month ATM - IV of Shanghai Composite 50 Index Option is 11.75%, with an IV change of 0.21% [5] Option Types Analysis Shanghai Composite 50 Index Option - Multiple charts show the full - contract PCR,主力 contract skewness trend, volatility cone, and volatility term structure, providing a comprehensive view of its market performance [8][9] CSI 300 Index Option - Similar to the Shanghai Composite 50 Index Option, there are charts for full - contract PCR,主力 contract skewness trend, volatility cone, and volatility term structure to analyze its characteristics [12][13] CSI 1000 Index Option - The report presents relevant charts for this option type, including主力 contract volatility, full - contract PCR,主力 contract skewness, volatility cone, and volatility term structure [15][16] Various ETF Options - For Shanghai Composite 50 ETF Option, Huatai - Berich 300 ETF Option, and other ETF options, their respective主力 contract volatility, full - contract PCR,主力 contract skewness, volatility cone, and volatility term structure are analyzed through charts [18][22]