A股开门红

Market Overview - On the first day of the new year, the A-share market opened high and continued to rise, with the Shanghai Composite Index returning to 4000 points after 34 trading days, and the ChiNext Index increasing by over 2% [1] - The total trading volume in the Shanghai and Shenzhen markets reached 1.64 trillion yuan, an increase of 323.8 billion yuan compared to the previous trading day [1] Sector Performance - The brain-computer interface concept saw a significant surge, with over twenty constituent stocks hitting the daily limit, including Sanbo Brain Science, Meihao Medical, Innovation Medical, Beiyikang, and Saili Medical [3] - The commercial aerospace sector remained active, with China Satellite Communications achieving three limit-ups in five days [3] - The insurance sector strengthened, with Xinhua Insurance and China Pacific Insurance both reaching historical highs [3] - The semiconductor industry chain showed active performance, with stocks like Yaxiang Integration and Shenghui Integration hitting the daily limit [3] Declines - The Hainan Free Trade Zone concept experienced a collective decline, with Hainan Development hitting the daily limit down [4] - By the end of the trading session, the Shanghai Composite Index rose by 1.07%, the Shenzhen Component Index increased by 1.87%, and the ChiNext Index gained 2.15% [4]