A股收评：午后跳水！AI应用狂飙，近4万亿天量成交

Market Overview - The A-share market experienced a mixed performance with the Shanghai Composite Index down by 0.31% closing at 4126 points, while the Shenzhen Component Index and the ChiNext Index rose by 0.56% and 0.82% respectively [2] - The total market turnover reached a record high of 3.99 trillion yuan, an increase of 288 billion yuan compared to the previous trading day, with over 2700 stocks rising and nearly 2600 stocks falling [3] Sector Performance - AI applications saw significant gains, with sectors such as Kimi concept, AI corpus, and AI intelligent agents leading the market [4] - Conversely, the insurance sector declined, along with lithium mining concepts and other sectors like banks and robotics, which experienced notable losses [4][5] AI Sector Insights - The AI application sector is expected to become a core investment theme, with companies like Lakala, Tongda Hai, and Hongjing Technology hitting the daily limit up [6] - Analysts predict that by 2026, AI applications will evolve from being merely usable to highly effective, establishing diverse business models [6] Precious Metals and Mining - Precious metals stocks surged, with silver prices reaching a historical high of $89.48 per ounce, driven by increased demand for safe-haven assets amid expectations of U.S. interest rate cuts [7] - Notable gains were observed in companies like Hunan Silver and Xiyang Tungsten, with Hunan Silver rising by 9.98% [8] Brokerage Sector Developments - The brokerage sector faced a downturn in the afternoon, with significant movements in stocks like Hualin Securities and Xiangcai Shares [9] - A regulatory change was announced, increasing the minimum margin ratio for financing on the Shanghai and Shenzhen stock exchanges from 80% to 100%, effective January 19, 2026 [9] Lithium Sector Adjustments - Lithium stocks experienced a pullback, with major players like Shengxin Lithium Energy and Tianqi Lithium seeing declines of over 6% and 4% respectively, as lithium carbonate contracts fell by 6% to 157,220 yuan per ton [10] Market Sentiment and Future Outlook - There is a notable presence of large sell orders in key stocks, indicating potential market pressure, with significant amounts in companies like China Merchants Bank and Zijin Mining [11] - Analysts from GF Securities suggest that the A-share market may break historical valuation trends in 2026, driven by factors such as increased profitability in emerging industries and a favorable macroeconomic environment [13][16]