A股午评：沪指跌1.23% 全市场超4900只个股下跌

Market Overview - The market experienced a downturn in early trading, with over 4,900 stocks declining. The Shanghai Composite Index fell by 1.23%, the Shenzhen Component Index dropped by 1.84%, and the ChiNext Index decreased by 1.75% [1] Sector Performance - The banking sector saw collective gains, with Nanjing Bank rising over 5% at one point [2] - The semiconductor industry continued its strong performance, with Changchuan Technology and Lianang Micro both hitting the daily limit up, and Huasoft Technology achieving three consecutive trading limit ups [3] - The port and shipping sector was active against the trend, with both Nanjing Port and Ningbo Shipping reaching the daily limit up [3] - Conversely, the tourism sector faced significant declines, with Yunnan Tourism hitting the daily limit down [4] Trading Volume - The total trading volume in the Shanghai and Shenzhen markets reached 1.7 trillion yuan, an increase of 353.9 billion yuan compared to the previous trading day [5] - Notable individual stock trading volumes included Luxshare Precision, which had a trading volume exceeding 26.8 billion yuan, leading the market, followed by Zhongji Xuchuang, Xinyi Sheng, and Shenghong Technology with high trading volumes [5]