股指周报：牛市预期持续，本周预计高位震荡，日内短多为主-20250818

Report Industry Investment Rating - The industry investment rating is "Oscillation" [1] Core Viewpoints of the Report - The bull market sentiment continued to ferment last week, with the stock index hitting a new high for the year. The Shanghai Composite Index broke through the 3,700 - point mark during the week, and the small - cap growth style outperformed. The overseas market sentiment returned to caution, and the US stock market was basically flat. The market is expected to oscillate at a high level this week, and the one - sided trading strategy should focus on short - term long positions within the day [1][2] Summary According to Relevant Catalogs I. Last Week's Stock Index Operation Review 1. Bull Market Atmosphere Continued to Ferment, and A - shares Reached a New High - The bull market atmosphere continued to ferment last week, and the stock index hit a new high for the year. The Shanghai Composite Index broke through 3,700 points. Among the four broad - based indexes, CSI 1000 (+4.09%) > CSI 500 (+3.88%) > SSE 50 (+2.37%) > SSE 50 (+1.57%). Overseas, the international market sentiment became cautious, and US stocks were basically flat, with the Nasdaq rising 0.81% [1][8] 2. Communications and Electronics Led the Rise, and Trading Volume Increased Rapidly - From the perspective of Shenwan's primary industry classification, most sectors rose last week. Communications (+7.66%) and electronics (+7.02%) led the gains, while banks (-3.19%) and steel (-2.04%) lagged. The A - share trading volume increased rapidly and exceeded 2 trillion at the end of the week [2][9] 3. The Premium of Stock Index Futures Narrowed Rapidly, and the Option Volatility Increased Rapidly - In the futures market, the basis of each stock index futures (spot - futures) declined last week. In operation, short - term long positions within the day are appropriate, and it is an opportunity to lay out long - term long positions when there is a sharp decline. In the options market, the implied volatility of stock index options increased, and the at - the - money IV of the current - month SSE 300 Index reached around 18%. One can try short - term double - selling to reduce volatility [3][10] II. Fundamental Elements Review and Market Outlook 1. The Central Bank Conducted a Net Withdrawal of 41.49 Billion Yuan in the Open Market Last Week - In terms of inter - bank liquidity, the central bank conducted a net withdrawal of 41.49 billion yuan in the open market last week, with 71.18 billion yuan in reverse repurchase operations and 112.67 billion yuan in reverse repurchase maturities. Inter - bank interest rates changed little, with Shibor overnight rising 8.36bp, Shibor one - week rising 2.94bp, etc. [69] 2. Short - Term Sentiment Remained Strong, and One - Sided Operations Became More Difficult - In the short term, investor sentiment remained strong. The brokerage sector related to the bull market expectation performed well. However, the rotation of sectors continued, indicating that the main line of the bull market has not been established. The market showed some fear of high prices, but the willingness of funds to enter the market was strong. It is expected that the market will oscillate at a high level this week, and one - sided trading strategies should focus on short - term long positions within the day [2][70] III. Economic Data & Financial Event Forecast 1. Macroeconomic Data Release - On August 19th (20:30), the data of new housing starts in the US in July will be released [101] 2. Key Financial Events - There are no major financial events [101]