A股三大指数走弱，沪指跌0.63%再度回落至4000点下方；创业板指跌超1%！培育钻石、电池、光伏设备逆市走强，近2600股下跌

Core Points - A-shares major indices weakened, with the Shanghai Composite Index falling 0.63% to below 4000 points, while the ChiNext Index dropped over 1% after briefly rising nearly 1% in the morning [1] - The Shenzhen Component Index decreased by 0.77%, and nearly 2600 stocks in the Shanghai and Shenzhen markets declined [1] Index Performance - Shanghai Composite Index: 3993.28, down 25.32 points, or -0.63% [2] - ChiNext Index: 3149.40, down 29.42 points, or -0.93% [2] - Shenzhen Component Index: 13324.21, down 103.40 points, or -0.77% [2] - Sci-Tech Innovation 50 Index: 1394.48, down 13.08 points, or -0.93% [2] - North Star 50 Index: 1507.74, down 4.78 points, or -0.32% [2] - CSI 300 Index: 4650.72, down 44.33 points, or -0.94% [2] - FJE 50 Index: 3025.57, down 28.28 points, or -0.93% [2] Sector Performance - Weaker sectors included coal, Hainan, insurance, diversified finance, and satellite internet [1] - Stronger sectors included cultivated diamonds, batteries, photovoltaic equipment, cement and building materials, and transportation equipment [1]