午评：上证指数高开低走跌0.22% 全市场超3300只个股下跌

Market Overview - The Shanghai Composite Index fell by 0.22%, the Shenzhen Component Index decreased by 0.1%, and the ChiNext Index dropped by 0.01%, while the Northern Stock 50 rose by 0.37% [1] - The total market turnover reached 200.63 billion yuan, an increase of 111.1 billion yuan compared to the previous day's turnover [1] Sector Performance - The electric grid equipment, semiconductor equipment, and storage chip sectors were active, while the AI application sector experienced a decline [1] - Electric grid equipment showed strength in the morning session, with companies like Electric Power Research Institute and Hancable both hitting the daily limit [1] - Semiconductor equipment continued to perform well, with Jing Sheng Co. rising over 10%, and companies like Zhongke Feimiao and Jinhai Tong increasing by over 6% [1] - The storage chip sector also saw gains, with Jin Tai Yang hitting the daily limit, and companies such as Jing Suan Da, Kexiang Co., and Jing Ce Electronics rising over 10% [1] - Conversely, the AI application sector faced weakness, with Zhi Te New Materials hitting the daily limit down, and companies like Weining Health, Liu Jin Technology, and Hongbo Medicine dropping over 10% [1]