午评：沪指半日涨0.88%重回4000点，磷化工、金属铝板块涨幅居前

Market Overview - The three major indices collectively rose in early trading, with the Shanghai Composite Index up by 0.88%, the Shenzhen Component Index up by 1.39%, and the ChiNext Index also up by 1.39%, while the North Exchange 50 fell by 0.02% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 13,378 billion yuan, an increase of 1,881 billion yuan compared to the previous day [1] - Over 2,700 stocks in the market experienced gains [1] Sector Performance - The top-performing sectors included phosphorus chemical industry, storage chips, controllable nuclear fusion, aviation engines, insurance, wind power equipment, and PEEK material concept stocks [1] - Conversely, the Hainan Free Trade Zone, tourism and hotel, short drama games, and ice and snow industry sectors saw significant declines [1] Notable Stocks - In the storage chip sector, multiple stocks surged, with Xiangshang Chip Innovation reaching a new high and Demingli hitting the daily limit [1] - The phosphorus chemical sector saw a collective surge, with Qing Shui Yuan, Ba Tian Co., Chengxing Co., and Yuntianhua all hitting the daily limit [1] - The securities sector experienced a brief rally, with Northeast Securities, Huatai Securities, and GF Securities leading the gains [1] - Other sectors such as solid-state batteries, humanoid robots, and insurance also saw upward movement [1] Declining Stocks - The ice and snow industry sector faced collective adjustments, with Dalian Shengya hitting the daily limit down, followed by Changbai Mountain, Caesar Travel, and Jingxue Energy [1] - The Hainan Free Trade Zone sector also experienced significant declines, with Haiqi Group hitting the daily limit down, and Luoniushan, Kangzhi Pharmaceutical, and Hainan Ruize showing notable losses [1]