警惕！AI概念集体“塌方”，最高跌超4%！但聪明钱已暗中切换新主线！

Group 1 - The market is experiencing a "divergence," with major indices collectively declining: Shanghai Composite down 0.51%, Shenzhen Component down 0.78%, and ChiNext down 1.12%, indicating cautious market sentiment [1] - The total market turnover reached 1.67 trillion yuan, an increase of 76.5 billion yuan from the previous day, suggesting significant fund reallocation and a shift in market focus [1] - The AI application sectors, including computer, media, and communication, faced substantial declines, with the media sector plummeting 2.86%, contrasting with the performance of defensive sectors like non-ferrous metals and transportation [1] Group 2 - Cultivated diamonds emerged as a standout sector, with the cultivated diamond index soaring 6.18% and the superhard materials index rising 3.64%, supported by strong industrial logic [1] - China has become a major global player in the production and consumption of cultivated diamonds, with technological advancements leading to reduced production costs and increased applications in industrial cutting and optical windows [1][2] - The Ministry of Industry and Information Technology's "14th Five-Year Plan" supports the industrialization of new materials, while younger consumers are increasingly accepting "real diamond alternatives," creating significant growth opportunities for the industry [2] Group 3 - The recent downturn in AI application stocks is viewed as a rational correction rather than a collapse of the industry fundamentals, as many stocks had been overvalued due to excessive speculation [2] - The introduction of commercial real estate REITs is a significant policy signal, opening up capital channels for trillions of yuan in existing assets, marking a shift from traditional "incremental investment" to "stock activation" [3] Group 4 - The market is expected to maintain a volatile consolidation pattern in the short term, but there is no need for excessive pessimism as important policy windows are approaching, which may enhance growth expectations [4] - The market is beginning to position itself for the 2026 trend, increasing the attractiveness of current levels for external incremental capital [4]