A股收评：三大指数涨跌不一，沪指接近平收，CPO概念、PCB板块爆发

Market Overview - The A-share market showed mixed performance today, with the Shanghai Composite Index down 0.01% to 4146 points, the Shenzhen Component Index up 0.19%, and the ChiNext Index down 0.29% [1] - The total market turnover reached 2.56 trillion yuan, an increase of 75.7 billion yuan compared to the previous trading day, with over 2800 stocks declining [1] Sector Performance - Nvidia's earnings exceeded expectations, leading to a surge in AI hardware sectors, including CPO concepts, copper cable high-speed connections, and liquid-cooled servers, with stocks like Fenghuo Communication, Hengtong Optic-Electric, and Zhongtian Technology hitting the daily limit [1] - The PCB and electronic components sectors also saw gains, with stocks like Huhua Electronics reaching the daily limit [1] - The controllable nuclear fusion sector strengthened, with stocks like Dongfang Electric hitting the daily limit [1] - Fertilizer, wind power, and rare metals sectors performed well, showing significant gains [1] - Conversely, the real estate sector opened high but closed low, with Hualian Holdings dropping over 6% [1] - The film and media sector continued to decline, with Bona Film Group hitting the limit down [1] - The aquaculture, tax refund stores, and oil and petrochemical sectors experienced the largest declines [1] Capital Inflow - The top sectors by capital inflow included power generation equipment, communication equipment, and the internet, with respective five-day gains of 4.19%, 2.68%, and 2.91% [2] - Other notable sectors with positive performance included electronic components, fertilizers and pesticides, and steel, with gains of 1.78%, 2.24%, and 1.66% respectively [2]