A股午评：沪指涨0.24%，商业航天概念集体爆发

Market Overview - The market experienced narrow fluctuations in the early session, with all three major indices turning positive. The Shanghai Composite Index rose by 0.24%, the Shenzhen Component Index increased by 0.31%, and the ChiNext Index gained 0.08% [1] Sector Performance - The commercial aerospace sector showed strong performance, with nearly 20 constituent stocks hitting the daily limit, including Chaojie Co., Ltd. which reached a 20% increase, and Shenjian Co., Ltd. achieving five consecutive limit-ups. Other notable stocks include Jiuding New Materials, Hezhong Shizhuang, and Zaiseng Technology, all of which also hit the limit [2] - The Fujian sector strengthened again, with Anji Food achieving four limit-ups in seven days and Hexing Packaging recording three consecutive limit-ups [2] - The semiconductor sector was active, with Shenghui Integrated reaching three consecutive limit-ups [2] Declining Stocks - The precious metals sector opened high but fell back, with Shanjin International and Western Gold experiencing declines [3] - The dairy sector saw a pullback, with Zhuangyuan Pasture hitting the daily limit down [3] Trading Volume - The total trading volume in the Shanghai and Shenzhen markets reached 1.15 trillion yuan, a decrease of 89.5 billion yuan compared to the previous trading day [4] Individual Stock Highlights - Zhongji Xuchuang led in trading volume with over 9.7 billion yuan, followed by China Satellite, Industrial Fulian, and Xinyi Sheng, which also had significant trading volumes [5]