证券时报·2025-09-25 09:32Market Overview - A-shares continued to show strength on September 25, with the Shanghai Composite Index experiencing slight fluctuations, while the ChiNext Index rose over 2%, reaching a new high in over three years [2] - The total trading volume in the Shanghai and Shenzhen markets reached 23.92 billion yuan, an increase of 44.5 billion yuan from the previous day [2] - The real estate sector faced declines, with major stocks like Longfor Properties hitting the daily limit down [2] Sector Performance - The non-ferrous metals sector saw significant gains, with companies like Luoyang Molybdenum nearing the daily limit up, and others like Tongling Nonferrous Metals and Northern Copper rising over 7% [5][4] - AI application stocks were active, with companies such as Pinming Technology and Inspur Information hitting the daily limit up [10][12] - The controllable nuclear fusion concept gained traction, with stocks like Haheng Huadong and Shanghai Electric also hitting the daily limit up [15][14] Copper Market Dynamics - A fatal landslide at Freeport McMoRan's Grasberg mine in Indonesia has led to a significant rise in global copper prices and raised supply chain concerns, with production expected to be disrupted until 2027 [7] - The mine accounts for 50% of the company's proven reserves and 70% of its expected production before 2029, indicating a long-term impact on global copper supply [7] Cobalt Market Developments - The Democratic Republic of Congo has extended its cobalt export ban until October 15, with a quota system set to be implemented thereafter, limiting exports to 44% of annual production from 2026 to 2027 [8] - This quota system is expected to stabilize cobalt prices and lead to a significant supply shortage in the coming years [8] AI Industry Insights - Major tech companies like Google, Microsoft, Meta, and Amazon are projected to invest over $350 billion in AI infrastructure this year, with expectations to exceed $400 billion by 2026 [13] - The AI industry continues to show strong growth potential, particularly in domestic sectors related to servers and cooling technologies [12][13] Nuclear Fusion Developments - The Chinese fusion energy company showcased its technology at the China International Industry Fair, indicating a competitive global landscape for fusion energy [17] - The commercial viability of controllable nuclear fusion is being recognized, with ongoing projects in various countries accelerating their development [17]