A股收评：三大指数齐跌，沪指失守4000点创指跌1.84%，锂矿股逆市走高！近4100股下跌，成交2.46万亿放量1376亿

Market Overview - Major A-share indices experienced a decline, with the Shanghai Composite Index falling below 4000 points in the afternoon session, closing down 0.73% at 3986 points [1] - The Shenzhen Component Index decreased by 1.16%, while the ChiNext Index dropped by 1.84% [1] - Total market turnover reached 2.46 trillion yuan, an increase of 137.6 billion yuan compared to the previous trading day, with 4100 stocks declining [1] Index Performance - Shanghai Composite Index: 3986.90, down 29.43 points (-0.73%) [2] - Shenzhen Component Index: 13532.13, down 159.26 points (-1.16%) [2] - ChiNext Index: 3263.02, down 61.25 points (-1.84%) [2] - Other indices such as the CSI 300 and CSI 500 also showed declines of 0.80% and 1.27% respectively [2] Sector Performance - The shipping sector saw a gain of 1.98%, while the steel sector increased by 1.24% [3] - Lithium mining stocks continued their upward trend, with companies like Jiangte Motor and Yongxing Materials hitting the daily limit [3] - Blade battery stocks surged, with Penghui Energy reaching a 20% limit up [3] - The cultivated diamond sector was active, with World hitting the daily limit [3] - Conversely, the CPO concept faced a downturn, with Tianfu Communication dropping over 11% [3] - Other sectors such as superconductors and laser radar also experienced significant declines, with companies like Woke Materials and Tengjing Technology falling over 11% [3]