- The report constructs 10 style factors based on the BARRA model, including valuation factor, growth factor, profitability factor, size factor, Beta factor, momentum factor, liquidity factor, volatility factor, non-linear size factor, and leverage factor[16][17][19] - The construction process for style factors involves detailed formulas, such as the valuation factor (BP = Book to Price = Shareholder equity/Market capitalization), growth factor (SGRO = Sales growth rate derived from regression of past five fiscal years' revenue), profitability factor (ETOP = Earnings-to-price ratio = Net profit TTM/Market capitalization), and others[16][17] - The style factors are tested using weekly rebalancing on the CSI All Share Index (000985.SH) with no transaction fees considered[16][17] - Beta factor, momentum factor, and volatility factor showed strong performance recently, with weekly long-short returns of 4.54%, 4.34%, and 3.81%, respectively[19] - The report tracks 53 stock selection factors across valuation, growth, quality, size, reversal, momentum, liquidity, volatility, dividend, corporate governance, and technical categories[21][22] - Examples of stock selection factors include BP (Book to Price = Shareholder equity/Market capitalization), single-quarter EP (Net profit/Market capitalization), and 240-day momentum (cumulative return excluding the last 20 days)[22] - The construction of single-factor portfolios uses a neutral constraint method to maximize factor exposure while maintaining neutrality in industry and style exposures[62][64][65] - Single-quarter ROE, single-quarter ROA, and single-quarter net profit margin factors performed well across multiple stock pools, such as CSI 300, CSI 500, CSI 800, and CSI 1000[24][28][33][38] - The report evaluates index-enhanced portfolios for CSI 300, CSI 500, CSI 800, CSI 1000, and CSI 300 ESG stock pools using composite factors constructed via rolling 1-year Rank ICIR weighting[56][59][61] - CSI 300 enhanced portfolio achieved weekly excess returns of 0.33%, monthly excess returns of 1.05%, and annual excess returns of 13.02%[59][60] - CSI 1000 enhanced portfolio showed the highest annual excess returns of 15.68% among all portfolios[60] - The ESG-enhanced portfolio under CSI 300 stock pool achieved weekly excess returns of 0.59%, monthly excess returns of 1.09%, and annual excess returns of 7.35%[60] - The optimization model for portfolio construction maximizes exposure to target factors while maintaining neutrality in industry and style exposures, with constraints on stock weights, short selling, and full investment[62][64][65] - The model uses the following formula: $Max$$w^{\prime}$$X_{target}$ $s.t.$$(w-w_{b})^{\prime}X_{ind}=0$ $(w-w_{b})^{\prime}$$X_{Beta}=0$ $|w-w_{b}|\leq1\%$ $w\geq0$ $w^{\prime}B=1$ $w^{\prime}1=1$[62][63][64]

Core Viewpoint - The stock of Zhejiang China Commodity City Group Co., Ltd. experienced a decline of 5.31%, trading at 18.37 CNY per share, with a total market capitalization of 100.735 billion CNY as of the report date [1] Company Overview - Zhejiang China Commodity City Group was established on December 28, 1993, and listed on May 9, 2002. The company is located at 567 Yinhai Road, Yiwu City, Zhejiang Province [1] - The main business activities include market development and operation, providing online trading platforms and services, and developing online trading markets [1] - Revenue composition: 58.77% from merchandise sales, 29.72% from market space usage and related services, 6.09% from other services, 3.24% from leasing, 2.01% from hotel accommodation and catering services, and 0.16% from usage fees [1] Fund Holdings - One fund under Dongfang Fund holds a significant position in China Commodity City, specifically the Dongfang CSI 300 Index Enhanced A (016204), which held 97,100 shares in the second quarter, accounting for 1.72% of the fund's net value, ranking as the eighth largest holding [2] - The fund has reported a floating loss of approximately 100,000 CNY as of the report date [2] Fund Manager Performance - The fund manager, Sheng Ze, has been in position for 7 years and 44 days, with a total asset scale of 782 million CNY, achieving a best return of 119.07% and a worst return of -20.29% during his tenure [3] - Co-manager Wang Huaixun has been in position for 3 years and 131 days, managing assets of 228 million CNY, with a best return of 55.18% and a worst return of -0.35% during his tenure [3]

Core Insights - The announcement of the appointment of Wang Huaixun as the new fund manager for the Dongfang CSI 300 Index Enhanced Fund (016204) effective September 16, 2025 [1] - As of September 15, 2025, the net value of the fund was 1.2071, reflecting a decrease of 0.46% from the previous day, while it has increased by 34.33% over the past year [1] Fund Manager Background - Wang Huaixun holds a master's degree in finance from Renmin University of China and has previously worked as a researcher at China Life Insurance Company [1] - He joined Dongfang Fund Management Co., Ltd. in 2015 and has held various positions including product manager assistant and quantitative investment researcher [1] Fund Performance - Wang has managed several public funds, including: - Dongfang Heavy Chemical Growth Flexible Allocation Mixed A, with a scale of 0.74 billion and a return of 56.29% since May 17, 2022 [2] - Dongfang Quantitative Multi-Strategy Mixed A, with a scale of 0.24 billion and a return of 10.32% since May 17, 2022 [2] - Dongfang Quantitative Growth Flexible Allocation Mixed C, with a scale of 0.08 billion and a return of 38.29% since November 24, 2023 [2] - Notably, the Dongfang Quantitative Growth Flexible Allocation Mixed A fund achieved an estimated return of 76.32% from trading in Sanfeng Intelligent, with an entry price of 110.3 and an exit price of 194.48 [2]

Group 1 - The core viewpoint of the news is that Jianfan Bio (300529.SZ) reported a decrease in institutional investor holdings in its A-shares, with a total of 51.87 million shares held by six institutions, representing 6.49% of the total share capital, down by 2.00 percentage points from the previous quarter [1] Group 2 - In the public fund sector, two public funds increased their holdings, including Huabao Zhongzheng Medical ETF and Southern Zhongzheng 500 ETF, with an increase ratio of 0.25% [2] - Two public funds decreased their holdings, namely, Zhaoshang Guozhen Biomedical Index A and Yifangda Growth Enterprise ETF, with a decrease ratio of 0.11% [2] - Six public funds did not disclose their holdings in the current period, including Guangda Baodexin Credit Enhancement Bond A and others [2] Group 3 - Regarding foreign investment, the Hong Kong Central Clearing Limited is noted as an institution that did not disclose its holdings in the current period [3]