Xin Lang Cai Jing·2025-09-19 06:51Group 1 - The Shanghai Composite Index experienced a slight decline, with the AI ETF Huaxia (589010) dropping by 2.11% after initially showing gains in the morning session [1] - Major component stocks within the AI ETF saw significant declines, with Cambricon leading the drop at 5.29%, followed by Hongsoft Technology at 4.31%, and others like Yuntian Lifei and Tianzhun Technology falling over 3% [1] - The trading volume during the session exceeded 68 million yuan, indicating active market participation and ample liquidity [1] Group 2 - Changjiang Securities reported that xAI launched Grok-4 Fast, the fastest AI model in its lineup, achieving a generation speed of 75 tokens per second, which is ten times faster than the standard version [2] - The design prioritizing speed is expected to enhance user experience and efficiency, making it suitable for scenarios requiring immediate results, with potential integration into development tools and mobile platforms [2] - The AI ETF Huaxia (589010) closely tracks the Shanghai Stock Exchange's AI index, covering high-quality enterprises across the entire industry chain, benefiting from high R&D investment and policy support [2]