股指支撑力量仍较强

Report Industry Investment Rating - No relevant content provided Core Viewpoints - Today, all stock indices oscillated and rebounded. The total trading volume of the Shanghai, Shenzhen, and Beijing stock markets was 2.0904 trillion yuan, a decrease of 506.2 billion yuan from the previous day. The volume - shrinking rebound of the stock market reflects that the overall market sentiment remains optimistic, with funds entering the market on dips after corrections, and the downside space for stock indices is limited. At the same time, it also shows that funds chasing higher near the previous high points remain relatively cautious [4]. - In the short term, the tariff war has resurfaced, and external uncertainties have increased before November. Coupled with the current relatively high valuation level, investors' willingness to take profits has risen, and there is short - term technical correction pressure. In the medium to long term, the problem of insufficient effective domestic demand still exists, and the disturbance of external tariff factors still remains. There are strong expectations for policy - makers to stabilize the macro - fundamentals, and the expectation of policy benefits forms strong support for the stock indices. The trend of net capital inflow into the A - share market remains unchanged, so the stock indices have strong medium - to - long - term support. Overall, under the game between profit - taking sentiment and policy support, the stock indices are expected to maintain wide - range oscillations in the short term [4]. - Currently, the implied volatility of options remains relatively stable. Considering the medium - to - long - term upward trend of the stock indices, investors can continue to hold bull spreads or covered calls [4]. Summary by Directory 1 Option Indicators - On October 15, 2025, the 50ETF rose 1.23% to close at 3.138; the 300ETF (Shanghai Stock Exchange) rose 1.31% to close at 4.706; the 300ETF (Shenzhen Stock Exchange) rose 1.48% to close at 4.862; the CSI 300 Index rose 1.48% to close at 4606.29; the CSI 1000 Index rose 1.50% to close at 7483.45; the 500ETF (Shanghai Stock Exchange) rose 1.43% to close at 7.393; the 500ETF (Shenzhen Stock Exchange) rose 1.27% to close at 2.953; the ChiNext ETF rose 2.35% to close at 3.003; the Shenzhen 100ETF rose 2.14% to close at 3.486; the SSE 50 Index rose 1.36% to close at 3001.35; the STAR 50ETF rose 1.35% to close at 1.50; the E Fund STAR 50ETF rose 1.10% to close at 1.47 [7]. - The trading volume PCR and position PCR of various ETF options and index options are provided, showing the changes compared with the previous trading day [8]. - The implied volatility of at - the - money options and the 30 - trading - day historical volatility of the underlying assets of various ETF options and index options are presented [9][10]. 2 Related Charts - SSE 50ETF Options: Include charts of the SSE 50ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [11][13][15]. - Shanghai Stock Exchange 300ETF Options: Include charts of the Shanghai Stock Exchange 300ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [23][25][27]. - Shenzhen Stock Exchange 300ETF Options: Include charts of the Shenzhen Stock Exchange 300ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [36][38][40]. - CSI 300 Index Options: Include charts of the CSI 300 index trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [50][52][54]. - CSI 1000 Index Options: Include charts of the CSI 1000 index trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [63][66][68]. - Shanghai Stock Exchange 500ETF Options: Include charts of the Shanghai Stock Exchange 500ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [77][79][81]. - Shenzhen Stock Exchange 500ETF Options: Include charts of the Shenzhen Stock Exchange 500ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [90][92][94]. - ChiNext ETF Options: Include charts of the ChiNext ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [103][105][107]. - Shenzhen 100ETF Options: Include charts of the Shenzhen 100ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [116][118][120]. - SSE 50 Index Options: Include charts of the SSE 50 index trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [129][131][133]. - STAR 50ETF Options: Include charts of the STAR 50ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [142][143][144]. - E Fund STAR 50ETF Options: Include charts of the E Fund STAR 50ETF trend, option volatility, trading volume PCR, position PCR, implied volatility curve, and at - the - money implied volatility of different tenors [152][153][154].