开门红！上证指数12连阳重返4000点

Group 1 - The A-share market experienced a "good start" on January 5, with the Shanghai Composite Index closing at 4023.42 points, up 54.58 points, a rise of 1.38% [1] - The Shenzhen Composite Index rose significantly by 50.56 points, or 2.00%, while the Sci-Tech Innovation Index surged by 3.61% [1] - Total trading volume in the A-share market reached 25,672.40 billion yuan, an increase of 24.27% compared to the previous period [1] Group 2 - The stock rise-to-fall ratio on that day was 4185:1168, with 139 stocks rising over 10% and 381 stocks rising over 5% [3] - Sectors such as brain engineering, healthcare, blood oxygen monitors, immunotherapy, AI healthcare, CXO, weight loss drugs, and assisted reproduction saw gains exceeding 3.5% [3] - Analysts express optimism about classic blue-chip stocks, noting that the "good start" was achieved through widespread gains, which is relatively rare [3]