股票股指期权：股指期权临近到期，看跌期权成交比例下降

Report Date - The report is dated October 16, 2025 [1] Core Viewpoint - As stock index options approach expiration, the trading volume ratio of put options has decreased [2] Market Data Statistics Underlying Market Statistics - The closing price of the SSE 50 Index was 3019.20, up 17.85, with a trading volume of 6.341 billion hands, an increase of 0.03 billion hands. The synthetic futures for the current month and next month were 3020.40 and 3021.33 respectively, with basis points of 1.20 and 2.14 [3] - The CSI 300 Index closed at 4618.42, up 12.13, with a trading volume of 24.824 billion hands, a decrease of 3.654 billion hands. The synthetic futures for the current month and next month were 4616.07 and 4604.13 respectively, with basis points of -2.36 and -14.29 [3] - The CSI 1000 Index closed at 7401.84, down 81.61, with a trading volume of 23.464 billion hands, a decrease of 1.021 billion hands. The synthetic futures for the current month and next month were 7400.73 and 7295.07 respectively, with basis points of -1.10 and -106.77 [3] Options Market Statistics - The trading volume of SSE 50 Index options was 72,709, an increase of 17,701, with an open interest of 78,533, an increase of 858. The VL - PCR was 58.30%, and the OI - PCR was 82.83%. The maximum call and put open interests in the near - month were at strike prices of 3050 and 2900 respectively [3] - The trading volume of CSI 300 Index options was 203,367, an increase of 14,560, with an open interest of 200,887, a decrease of 259. The VL - PCR was 73.39%, and the OI - PCR was 97.07%. The maximum call and put open interests in the near - month were at strike prices of 4700 and 4500 respectively [3] - The trading volume of CSI 1000 Index options was 362,400, a decrease of 58,777, with an open interest of 302,815, an increase of 5121. The VL - PCR was 98.62%, and the OI - PCR was 96.70%. The maximum call and put open interests in the near - month were at strike prices of 7500 and 7200 respectively [3] Options Volatility Statistics Near - Month - The ATM - IV of SSE 50 Index options was 14.96%, an increase of 0.35%. The Skew was -3.35%, a decrease of 1.45%. The VIX was 18.74, an increase of 0.152 [6] - The ATM - IV of CSI 300 Index options was 14.54%, a decrease of 0.69%. The Skew was -3.65%, a decrease of 0.48%. The VIX was 20.00, a decrease of 0.103 [6] - The ATM - IV of CSI 1000 Index options was 19.27%, a decrease of 0.05%. The Skew was -4.18%, an increase of 2.21%. The VIX was 24.67, an increase of 0.708 [6] Next - Month - The ATM - IV of SSE 50 Index options was 16.42%, an increase of 0.36%. The Skew was -1.69%, an increase of 0.88% [6] - The ATM - IV of CSI 300 Index options was 17.61%, a decrease of 0.10%. The Skew was -4.64%, a decrease of 0.18% [6] - The ATM - IV of CSI 1000 Index options was 23.02%, an increase of 0.86%. The Skew was -7.62%, a decrease of 1.40% [6] Option Types Analysis SSE 50 Index Options - Multiple charts are provided, including the full - contract PCR chart, the main - contract skew chart, the volatility cone chart, and the volatility term - structure chart [10][12] CSI 300 Index Options - Similar to SSE 50 Index options, multiple charts are presented, such as the main - contract volatility chart, the full - contract PCR chart, and the volatility cone chart [14][16] CSI 1000 Index Options - Relevant charts include the main - contract volatility chart, the full - contract PCR chart, and the volatility term - structure chart [19][23][25] SSE 50ETF Options - Charts cover the main - contract volatility, full - contract PCR, and volatility cone [27][28][29] Huatai - Baorui 300ETF Options - There are main - contract volatility, full - contract PCR, and volatility term - structure charts [31][33][36] Southern CSI 500ETF Options - The analysis includes main - contract volatility, full - contract PCR, and volatility cone charts [41][42][45] Huaxia Science and Technology Innovation 50ETF Options - Charts involve main - contract volatility, full - contract PCR, and volatility term - structure [49][51][53] E Fund Science and Technology Innovation 50ETF Options - Main - contract volatility, full - contract PCR, and volatility cone charts are provided [56][60][61] Harvest 300ETF Options - Relevant charts are main - contract volatility, full - contract PCR, and volatility term - structure [63][65] Harvest CSI 500ETF Options - The analysis includes main - contract volatility, full - contract PCR, and volatility cone charts [67][68][69] ChiNext ETF Options - Charts cover main - contract volatility, full - contract PCR, and volatility term - structure [71][72][73] Shenzhen 100ETF Options - There are main - contract volatility, full - contract PCR, and volatility cone charts [75][77][78]