收评：沪指低开低走跌0.46% AI应用等概念活跃

Core Points - The Shanghai Composite Index closed at 3972.03 points, down 0.46%, with a trading volume of 805.733 billion [1] - The Shenzhen Component Index closed at 13202.01 points, down 0.11%, with a trading volume of 1105.058 billion [1] - The ChiNext Index closed at 3105.20 points, down 0.20%, with a trading volume of 486.644 billion [1] Sector Performance - Sectors such as insurance, banking, brokerage, pharmaceuticals, and electricity experienced declines [1] - Conversely, sectors including military industry, coal, and real estate saw gains [1] - Active sectors included lithium mining, AI applications, and Huawei's computing concepts [1]