午评：沪指涨1.07%重回4000点 人脑工程概念掀涨停潮

Core Viewpoint - The three major indices in the Chinese stock market opened higher and showed strong performance, with the Shanghai Composite Index surpassing 4000 points for the first time in 34 trading days, indicating a positive market sentiment and investor confidence [1] Market Performance - The Shanghai Composite Index rose by 1.07% at midday, while the Shenzhen Component Index increased by 1.87%, and the ChiNext Index gained 2.15% [1] - The market saw a surge in various sectors, particularly in brain engineering, insurance, semiconductor, innovative pharmaceuticals, and commercial aerospace [1] Sector Highlights - The brain engineering concept experienced a wave of stocks hitting the daily limit, with over 20 stocks including Sanbo Brain Science, Xiangyu Medical, Meihao Medical, and Aipeng Medical reaching the limit [1] - The insurance sector showed strong performance, with New China Life Insurance and China Pacific Insurance both reaching historical highs [1] - The storage chip concept also saw gains, with stocks like Zhaoyi Innovation and Yunhan Chip City hitting the daily limit [1] - The innovative pharmaceutical sector rose, with stocks such as Zhaoyan New Drug, Fuyuan Pharmaceutical, and Lepu Medical also reaching the limit [1] - The commercial aerospace sector remained active, with stocks like Reco Defense, Goldwind Technology, and Fenghuo Communication hitting the daily limit [1] Sector Performance - The leading sectors in terms of gains included insurance, healthcare, semiconductors, and the internet [1] - Conversely, sectors that experienced declines included hotel and catering, tourism, public transportation, and Hainan Free Trade [1]