2026开门红！沪指重回4000点

Group 1 - The A-share market experienced a strong start in 2026, with major indices rising significantly, and the Shanghai Composite Index surpassing 4000 points, marking a twelve-day consecutive increase [1] - The total trading volume in the Shanghai and Shenzhen markets reached 2.55 trillion yuan, indicating robust market activity [1] - By the end of the trading day, the Shanghai Composite Index rose by 1.38%, the Shenzhen Component Index increased by 2.24%, and the ChiNext Index saw a rise of 2.85%, with nearly 4200 stocks advancing [1] Group 2 - The technology sector continued to perform well, with notable gains in areas such as AI applications, commercial aerospace, memory storage, and innovative pharmaceuticals [2]