谷歌发布更高效Gemini 3 Flash模型，AI人工智能ETF(512930)盘中蓄势

Group 1 - Google announced the launch of a new member of the Gemini 3 family, Flash, which replaces Gemini 2.5 Flash as the default model for the Gemini App and Google Search AI, indicating a significant market push in the AI competition [1] - Citic Securities highlighted the recent catalysts in the AI industry chain, including the performance improvement of Google's new model, the release of DeepSeek V3.2, Amazon's Trainium3, and the listing of Moore Threads, showcasing a positive outlook for AI development [1] - The current era is compared to an industrial revolution, suggesting that the demand for computing power and application scenarios driven by AI is expected to maintain an optimistic outlook, particularly for the AI computing power sector [1] Group 2 - As of December 18, 2025, the CSI Artificial Intelligence Theme Index (930713) fell by 1.02%, with mixed performance among constituent stocks, including Siwei Tushin leading with a 3.01% increase and Xinjisheng dropping by 2.80% [2] - The AI Artificial Intelligence ETF (512930) closely tracks the CSI Artificial Intelligence Theme Index, which selects 50 listed companies involved in providing foundational resources, technology, and application support for AI [2] - The top ten weighted stocks in the CSI Artificial Intelligence Theme Index account for 63.92% of the index, indicating a concentrated investment in key players within the AI sector [3]