A股市场运行周报第81期：主线未彰显、震荡或继续，维持弹性、继续等待

Market Overview - The A-share market continued to show strong fluctuations, with major indices displaying significant divergence, where the Shanghai Composite Index rose by 1.98% for the week[10] - The ChiNext Index and the STAR 50 Index increased by 1.05% and 1.20% respectively, while the Hang Seng Technology Index fell by 1.41%[10][52] Sector Performance - The non-ferrous metals sector rebounded significantly by 9.77%, driven by rare earth and minor metals, while the media and consumer finance sectors weakened, with declines of 5.10% and 1.18% respectively[13][50] - Resource sectors such as steel, chemicals, and oil & petrochemicals saw increases of 12.27%, 7.15%, and 5.61% respectively[50] Market Sentiment and Trading Dynamics - The average daily trading volume in the Shanghai and Shenzhen markets increased to 2.42 trillion yuan, up from 2.09 trillion yuan the previous week[21] - Margin trading data showed a slight increase, with the total margin balance reaching 2.66 trillion yuan, up from 2.58 trillion yuan[29] Investment Strategy - The recommendation is to maintain flexibility in medium-term positions while being cautious and waiting for trend opportunities, and to selectively trade lower-tier stocks for short-term gains[53] - Focus on sectors such as securities, construction materials, and banking, while increasing attention to event-driven opportunities in the oil and petrochemical industries[53] Risk Factors - Risks include potential underperformance of domestic economic recovery and uncertainties in global geopolitical situations[54]