沪指再上4000点，科创AIETF富国（589380）盘中涨幅达4.12%

Group 1 - The core viewpoint of the article highlights a strong rebound in the technology sector on the first trading day of the year, with the Shanghai Composite Index successfully surpassing 4000 points and the ChiNext Index breaking through 3200 points, driven by robust performance in AI-related stocks [1] - The CES (Consumer Electronics Show), described as the "Spring Festival Gala" of the tech industry, is set to take place from January 6 to 9, showcasing cutting-edge AI hardware and attracting global investors and consumers [1] - The Kexin AI ETF (589380) tracks the Shanghai Stock Exchange's AI Index, covering the entire AI industry chain, including upstream computing chips, midstream cloud computing, and downstream robotics, with a significant focus on high-growth sectors like semiconductors and computing [1] Group 2 - The Kexin AI ETF (589380) recorded a gain of 4.12%, while other ETFs such as the Xinchuang ETF (159538) and Technology 50 ETF (515750) also showed strong performance with gains of 3.77% and 3.65% respectively [1] - Notable individual stock performances include Zhongwei Company, which surged over 12%, and Lanke Technology, which increased by more than 8% [1] - The Kexin AI ETF is accessible to retail investors through its connection classes (A class 024763; C class 024764), providing opportunities for investment in the AI sector [1]