A股10月收官！沪指一度站上4000点创10年新高，科创50指数月跌超5%

Market Performance - The Shanghai Composite Index has increased by 1.85% this month, reaching a ten-year high by briefly surpassing 4000 points [1] - The ChiNext Index has decreased by 1.56% this month, while the STAR 50 Index has seen a decline of over 5% [1] - The North Exchange 50 Index has performed strongly, with a monthly increase of over 3.5% [1] Daily Market Activity - Today's market experienced fluctuations, with the ChiNext Index dropping over 2% [1] - The total trading volume in the Shanghai and Shenzhen markets was 2.32 trillion yuan, a decrease of 103.9 billion yuan compared to the previous trading day [1] - At the close, the Shanghai Composite Index fell by 0.81%, the Shenzhen Component Index dropped by 1.14%, and the ChiNext Index decreased by 2.31% [1] Sector Performance - The pharmaceutical sector saw collective gains, with stocks like Lianhuan Pharmaceutical and Sanofi China hitting the daily limit [1] - The liquor concept stocks surged in the afternoon, with Zhongrui Co. achieving two consecutive limit-ups [1] - The film and theater sector was active, with Bona Film Group reaching the daily limit [1] - The Fujian sector strengthened again, with Pingtan Development achieving eight limit-ups in eleven days, and Fujian Jinsen and Fulongma both hitting two consecutive limit-ups [1] - AI application concept stocks rose against the trend, with Rongxin Culture and Fushi Holdings both reaching the daily limit [1] Declining Sectors - The computing hardware concept stocks collectively declined, with significant adjustments in the three major optical module companies [1] - Sectors such as insurance, storage chips, and CPO experienced the largest declines [1]