午评：沪指窄幅震荡微涨 核电、无人环卫车概念股集体大涨

Market Overview - The market experienced narrow fluctuations in the early session, with mixed performance across the three major indices [1] - The total trading volume in the Shanghai and Shenzhen markets reached 652.4 billion, an increase of 41.9 billion compared to the previous trading day [1] - More than 3,400 stocks in the market declined, indicating a predominance of downward movement among individual stocks [1] Sector Performance - Nuclear power stocks showed renewed strength, with companies like Changcheng Electric achieving a limit-up [1] - The concept of unmanned sanitation vehicles saw a collective surge, with stocks such as Jinlv Environment hitting the limit-up [1] - Beverage manufacturing stocks maintained strong performance, with companies like Huaiqi Mountain also reaching the limit-up [1] - In contrast, the pet economy sector underwent adjustments, with Tianyuan Pet declining nearly 10% [1] Leading and Lagging Sectors - The sectors with the highest gains included controllable nuclear fusion, beverage manufacturing, waste classification, and deep-sea technology [1] - Conversely, the sectors with the largest declines were e-commerce, pet economy, CRO (Contract Research Organization), and film and television [1] Index Performance - By the end of the trading session, the Shanghai Composite Index rose by 0.07%, the Shenzhen Component Index fell by 0.04%, and the ChiNext Index increased by 0.02% [1]