博时市场点评2月4日：两市涨跌不一，沪指重返4100点

Market Overview - The Shanghai Composite Index closed at 4102.20 points, up 0.85%, while the Shenzhen Component Index rose 0.21% to 14156.27 points. The ChiNext Index fell 0.40% to 3311.51 points, and the Sci-Tech Innovation 100 Index decreased by 0.92% to 1620.23 points [4][11] - The total market turnover was 25,034.79 billion, a decrease from the previous trading day [6][12] - In the Shenwan first-level industry classification, coal, building materials, and real estate sectors led the gains, increasing by 7.58%, 3.48%, and 2.97% respectively, while media, communication, and computer sectors saw declines of 3.12%, 2.73%, and 1.70% respectively [4][11] Economic Indicators - The ISM Manufacturing Index in the U.S. unexpectedly rose from 47.9 to 52.6 in January, marking the first time in nearly a year that it entered the expansion zone, significantly exceeding market expectations [3][9] - This strong rebound may reflect a combination of inventory replenishment, demand recovery, and supply chain improvements, although its sustainability requires further data validation [3][9] Policy Developments - The Central Committee of the Communist Party of China and the State Council released the 2026 Central No. 1 Document, emphasizing the importance of food security and agricultural technology, with a target of stabilizing grain production at around 1.4 trillion jin [2][8] - The document highlights the integration of artificial intelligence with agriculture, promoting applications such as drones, IoT, and robotics, which is expected to benefit traditional agricultural sectors and open growth opportunities in agricultural technology and smart machinery [2][8] Monetary Policy - The People's Bank of China conducted a 3-month reverse repurchase operation of 800 billion, resulting in a net injection of 100 billion, marking the first increase in four months [2][9] - This action aims to maintain ample liquidity in the banking system and signals a continued supportive monetary policy stance, which may stabilize market expectations and encourage financial institutions to increase credit issuance [3][9]