金融工程定期：有色金属板块的资金行为监测

• The non-ferrous metal index (000819.SH) has increased by 83.14% since 2025, and by 83.87% since April 7, 2025, significantly outperforming the Wind All A Index during the same period [2][11][12] - Public fund holdings in the non-ferrous metal sector have rebounded since August 2025, based on real-time calculations using public market data such as fund net value, disclosed holdings, and research activities [3][15] - ETF holdings in the non-ferrous metal sector have been steadily increasing since July 2025, reflecting the growing popularity of index investment products, with the total scale of public ETF funds exceeding 4.3 trillion yuan by the end of Q2 2025 [3][18][20] - Margin balance in the non-ferrous metal sector has been rising since July 2025, indicating increased investor optimism about the market outlook [3][22][23] - Chip yield characteristics show that the current profitability effect of the non-ferrous metal index is 25.14%, with chip yield reflecting the return rate of current prices relative to historical chip costs [3][25][26] - Institutional research has been most frequent for companies such as Northern Rare Earth, Yunnan Copper, and Chihong Zinc & Germanium in 2025 [4][27][29] - Ganfeng Lithium, Huayou Cobalt, and Zijin Mining have received the highest attention from Snowball platform influencers since September 15, 2025 [4][30][31][32] - Major funds have flowed into companies such as Quartz Co., Bowei Alloy, and Shenghe Resources since September 15, 2025, with large and super-large orders used as proxy variables for major funds [4][34][35][38] - Companies such as Bowei Alloy, Jinli Permanent Magnet, and China Rare Earth have appeared on the Dragon Tiger List since September 15, 2025, reflecting the most active trading dynamics in the market [4][39] - High-frequency shareholder data indicates significant increases in shareholder numbers for companies such as Chifeng Gold, Huafeng Aluminum, and Hunan Gold, which may signal potential risks for subsequent stock prices [4][41][43]