算力概念蓄力回调，创业板人工智能指数跌超1%，铜牛信息跌超5%

Group 1 - The AI sector is experiencing a pullback, with the ChiNext AI Index down by 1.54% as of 11:08, and several component stocks like Kunlun Wanwei and Tongniu Information dropping over 4% [1] - Mary Meeker's "AI Trends Report 2025" highlights a significant increase in training costs for AI models, which have surged approximately 2400 times over the past eight years, with predictions that costs could reach $1 billion by 2025 and potentially exceed $10 billion in the future [1] Group 2 - The technology sector's congestion has significantly decreased, and AI computing power is expected to recover as it is in a phase of accelerated expansion [2] - The ChiNext AI ETF (159381) tracks the ChiNext AI Index and selects AI-focused companies listed on the ChiNext, with a daily price fluctuation limit of ±20% and a low total fee rate of 0.20% [2] - The top ten component stocks of the ChiNext AI ETF include leading companies in optical modules, chip design, and cloud computing, with over 26.6% weight in optical module CPO concept stocks [2]