A股收评：沪指跌0.22%盘中站上4000点，福建板块掀涨停潮

Market Overview - The market experienced a pullback after an initial rise, with all three major indices turning negative. The Shanghai Composite Index fell by 0.22%, the Shenzhen Component Index decreased by 0.44%, and the ChiNext Index dropped by 0.15% [1][2] - The Shanghai Composite Index briefly surpassed the 4000-point mark, reaching a ten-year high during the trading session [1][2] - The total trading volume in the Shanghai and Shenzhen markets was 2.15 trillion yuan, a decrease of 192.3 billion yuan compared to the previous trading day [1][2] Sector Performance - The Fujian sector saw a surge, with over ten stocks hitting the daily limit, including Pingtan Development, which achieved six consecutive limit-ups in eight days. Other stocks like Xiamen Port Development and Xiamen Airport also reached their daily limits [1][2] - The nuclear power sector was active, with Dongfang Tantalum Industry achieving three limit-ups in four days, and Antai Technology securing two consecutive limit-ups [1][2] - Robotics concept stocks strengthened, with Qingdao Double Star and Yashichuangneng both achieving three consecutive limit-ups, alongside other stocks like Ningbo Jingda and Fangzheng Electric also hitting their daily limits [1][2] - The military industry sector saw a rapid increase, with Jianglong Shipbuilding hitting the maximum limit of 20% [1][2] Declining Sectors - The non-ferrous metals sector experienced a collective decline, with Tongling Nonferrous Metals hitting the daily limit down [1][2] - Sectors with notable declines included non-ferrous metals, wind power equipment, and oil and gas [1][2]