上交所期权周报-20250803

1. Report Industry Investment Rating No relevant content provided. 2. Core Viewpoints of the Report - The weekly market declined to varying degrees, with all three option underlying assets dropping by over 1%. The changes in the position PCR ratios showed divergence, with the position PCR of 50ETF and 300ETF continuing to fall, while the put contract position ratio of 500ETF increased. Considering the changes in the implied volatility curve structure, with the curve of 500ETF shifting to the left, indicating some cautious sentiment, it is believed that the current market risk preference level has decreased, and a cautious attitude towards small-cap growth stocks is recommended. This is relatively favorable for large-cap blue-chip underlying assets such as 50ETF and 300ETF [5][43]. 3. Summary by Relevant Catalogs 3.1 Periodic and Spot Market Review 3.1.1 Underlying Asset Market - From July 28 to August 1, the Shanghai Composite Index fluctuated during the week, closing at 3559.95, with lower trading volume compared to the previous week. The Shenzhen Component Index fluctuated and declined during the week, with a decline of 1.58% compared to the previous week, closing at 10991.32, and lower trading volume compared to the previous week [2][8]. - 50ETF opened at 2.917 at the beginning of the week and closed at 2.876 at the end of the week, down 0.040 or 1.37% from the previous week, with a trading volume of 10.865 billion yuan. Huatai-PineBridge CSI 300ETF opened at 4.203 at the beginning of the week and closed at 4.133 at the end of the week, down 0.070 or 1.67% from the previous week, with a trading volume of 17.173 billion yuan. Southern CSI 500ETF opened at 6.365 at the beginning of the week and closed at 6.287 at the end of the week, down 0.078 or 1.23% from the previous week, with a trading volume of 6.109 billion yuan [3][8]. 3.1.2 Futures Index Market - From July 28 to August 1, all contracts of the stock index futures IH closed down. Among them, contract IH2508 declined by -1.42%. All contracts of the stock index futures IF closed down. Among them, contract IF2508 declined by -1.93%. All contracts of the stock index futures IC closed down. Among them, contract IC2508 declined by -1.43% [9]. 3.2 Option Market Review 3.2.1 Trading and Position Holding Situation - From July 28 to August 1, the average daily trading volume of 50ETF options decreased compared to the previous week, while the total position increased. The average daily trading volume of 50ETF options for the week was 1,249,242 contracts, a decrease of 123,739 contracts from the previous week's average daily trading volume. The total position was 1,443,444 contracts, an increase of 202,752 contracts from the end of the previous week. The total position PCR was 0.84, a decrease of 0.14 from the end of the previous week [13]. - The average daily trading volume of Huatai-PineBridge CSI 300ETF options decreased compared to the previous week, while the total position increased. The average daily trading volume of Huatai-PineBridge CSI 300ETF options for the week was 1,165,780 contracts, a decrease of 219,482 contracts from the previous week's average daily trading volume. The total position was 1,284,104 contracts, an increase of 107,929 contracts from the end of the previous week. The total position PCR was 0.89, a decrease of 0.14 from the end of the previous week [15]. - The average daily trading volume of Southern CSI 500ETF options decreased compared to the previous week, while the total position increased. The average daily trading volume of Southern CSI 500ETF options for the week was 1,352,948 contracts, a decrease of 102,102 contracts from the previous week's average daily trading volume. The total position was 1,249,009 contracts, an increase of 165,492 contracts from the end of the previous week. The total position PCR was 1.07, an increase of 0.06 from the end of the previous week [19]. 3.2.2 Volatility Situation - Historical Volatility: As of August 1, the 5-day historical rolling volatility of 50ETF rose to 13.05%, near the 50th percentile of the five-year historical level. Currently, the 5-day, 10-day, 20-day, and 40-day historical volatilities are 13.05%, 10.97%, 9.09%, and 9.07% respectively [22]. - The 5-day historical rolling volatility of Huatai-PineBridge CSI 300ETF rose to 14.26%, near the 50th percentile of the five-year historical level. Currently, the 5-day, 10-day, 20-day, and 40-day historical volatilities are 14.26%, 12.76%, 10.26%, and 9.74% respectively [25]. - The 5-day historical rolling volatility of Southern CSI 500ETF rose to 12.99%, near the 25th percentile of the five-year historical level. Currently, the 5-day, 10-day, 20-day, and 40-day historical volatilities are 12.99%, 13.83%, 11.63%, and 11.80% respectively [26]. - Implied Volatility: On August 1, the implied volatility near the at-the-money level decreased, and the overall implied volatility level declined. For 50ETF and 300ETF, the slopes on both sides of the curve increased, indicating an increased market expectation of future volatility. For 500ETF, the curve shifted to the left, showing some cautious sentiment [29]. - Comparison of Historical Volatility and Implied Volatility Trends: In terms of volatility, short-term volatility increased slightly, and monthly volatility followed suit. Implied volatility declined continuously during the week, and the volatility difference narrowed significantly. It is expected that historical volatility will continue to rise in the future, and the volatility difference will further narrow [36]. 3.3 Investment Recommendations - Given the market decline, the divergence in position PCR ratios, and the changes in the implied volatility curve structure, a cautious attitude towards small-cap growth stocks is recommended, and large-cap blue-chip underlying assets such as 50ETF and 300ETF are relatively favored [5][43].