Report Summary 1. Report Industry Investment Rating No investment rating information is provided in the report. 2. Core View The report focuses on the stock index and ETF options market on July 22, 2025, presenting data on market trends, including price changes, trading volume, open interest, and volatility, and warns about the expiration risk of ETF options [1]. 3. Summary by Category Market Data - **Underlying Market Statistics**: The closing prices of major indices and ETFs rose, with varying trading volume changes. For example, the Shanghai Composite 50 Index closed at 2792.18, up 19.94, and its trading volume was 68.31 billion hands, an increase of 18.36 billion hands [1]. - **Options Market Statistics**: Trading volume and open interest of most options increased. The PCR values (Volume - PCR and Open Interest - PCR) varied among different options, reflecting different market sentiment. For instance, the Volume - PCR of CSI 1000 Index Options was 72.54% [1]. - **Options Volatility Statistics**: Implied volatility (IV) and historical volatility (HV) of options showed different trends. For example, the near - month ATM - IV of Shanghai Composite 50 Index Options was 14.56%, with a 0.22% increase [4]. Index and ETF Options Analysis - **Shanghai Composite 50 Index Options**: Analyzed through full - contract PCR,主力 contract skew, volatility cone, and volatility term structure charts, showing market sentiment and volatility characteristics [7][8]. - **CSI 300 Index Options**: Similar analysis methods were used, with data presented in corresponding charts to reflect market conditions [11][12]. - **CSI 1000 Index Options**: The report analyzed its market performance from multiple perspectives, including trading volume, open interest, and volatility [14][15]. - **ETF Options**: Options such as Shanghai Composite 50ETF, Huatai - Berry 300ETF, and others were analyzed using PCR, skew, volatility cone, and term structure charts to understand their market trends [19][20].