午评：沪指半日涨0.3%一度站上4100点，商业航天、AI应用方向持续爆发

Market Overview - The three major indices collectively rose in early trading, with the Shanghai Composite Index up 0.3%, the Shenzhen Component Index up 0.57%, and the ChiNext Index up 0.1% [1] - The total trading volume in the Shanghai, Shenzhen, and Beijing markets reached 20,819 billion yuan, an increase of 3,004 billion yuan compared to the previous day [1] - Over 2,300 stocks in the market experienced gains [1] Sector Performance - Leading sectors included AI applications, military equipment, commercial aerospace, smart healthcare, oil and gas extraction and services, computing power leasing, retail, precious metals, cross-border payments, and controllable nuclear fusion, all showing significant gains [1] - Underperforming sectors included banking, glyphosate, airport and shipping, brain-computer interface, cement, and agriculture [1] Notable Stocks - In the AI application sector, stocks such as Yidian Tianxia reached new highs, while Dongfang Mingzhu achieved three consecutive trading limits, and several media companies like Yingli Media and BoRui Media hit the daily limit [1] - The commercial aerospace and military equipment sectors continued their upward trend, with stocks like Galaxy Electronics achieving five consecutive trading limits and China First Heavy Industries achieving three consecutive trading limits [1] - Oil and gas stocks were active, with China Petroleum reaching the daily limit at the opening [1] Adjustments in Specific Sectors - The banking sector faced another round of adjustments, with stocks like Hangzhou Bank, Ningbo Bank, and Nanjing Bank experiencing declines [1] - The brain-computer interface sector also saw fluctuations, with multiple stocks such as Meihao Medical, Aipeng Medical, and Xiangyu Medical declining [1]