Core Viewpoint - The report highlights the performance of various market factors and investment strategies, indicating positive returns in several areas while noting the mixed performance of different factors across industries [4][5][6]. Group 1: Market Factor Performance - The momentum factor achieved a positive return of 0.70%, indicating a momentum effect in the market; profitability and Beta factors also showed positive returns of 0.34% and 0.28% respectively, while the market capitalization factor had a negative return of -0.58%, reflecting a small-cap style [4]. - In the CSI 300 stock pool, the best-performing factors included quarterly operating profit growth rate (1.25%), quarterly ROE (1.07%), and early session return factor (0.95%), while the worst performers were the standard deviation of 6-day trading volume (-0.91%), standardized unexpected income (-0.89%), and quarterly EPS (-0.83%) [5]. - In the CSI 500 stock pool, the top factors were post-early session return factor (1.24%), standard deviation of 5-day trading volume (1.05%), and standard deviation of 6-day trading volume (0.82%), with the weakest factors being ROE stability (-0.96%), 5-minute return skewness (-0.84%), and ROA stability (-0.83%) [5]. Group 2: Industry Factor Performance - Fundamental factors showed varied performance across industries, with net asset growth rate, net profit growth rate, earnings per share, and TTM operating profit factors yielding consistent positive returns in the utilities and leisure services sectors [6]. - Valuation factors, particularly the BP factor, demonstrated significant positive returns in the construction materials, banking, and media sectors, while the EP factor showed notable positive returns in the coal industry [6]. - Residual volatility and liquidity factors yielded consistent positive returns in the defense, oil and petrochemical, and automotive industries, with a significant large-cap style observed in the coal and banking sectors [6]. Group 3: Investment Strategy Performance - The PB-ROE-50 combination achieved positive excess returns in the overall market stock pool, with a negative excess return of -0.40% in the CSI 500 stock pool and a positive excess return of 0.44% in the CSI 800 stock pool [7]. - Public fund research stock selection strategy and private fund research tracking strategy both achieved positive excess returns, with the public fund strategy outperforming the CSI 800 by 3.21% and the private fund strategy by 0.16% [8]. - The block trading combination achieved a positive excess return of 3.61% relative to the CSI All Index [9]. - The targeted issuance combination also achieved a positive excess return of 0.77% relative to the CSI All Index [10].

2025 年 8 月 2 日 总量研究 小市值风格占优，PB-ROE 组合表现较好 ——量化组合跟踪周报 20250801 要点 量化市场跟踪 大类因子表现：本周（2025.07.28-2025.08.01，下同）全市场股票池中，beta 因子和残差波动率因子获得正收益（0.73%和 0.60%），规模因子和非线性市值 因子取得负收益（-0.51%和-0.40%），市场小市值风格占优。 单因子表现：沪深 300 股票池中，本周表现较好的因子有总资产毛利率 TTM(2.64%)、单季度总资产毛利率(2.37%)、单季度 ROA(2.28%),表现较差的 因子有标准化预期外盈利(-0.86%)、5 日成交量的标准差(-1.00%)、动量调整小 单(-1.10%)。 中证 500 股票池中，本周表现较好的因子有单季度总资产毛利率(1.39%)、5 日 反转(1.17%)、总资产毛利率 TTM(0.95%),表现较差的因子有动量调整大单 (-0.87%)、日内波动率与成交金额的相关性(-1.31%)、下行波动率占比(-1.48%)。 流动性 1500 股票池中，本周表现较好的因子有总资产毛利率 TTM(1.35%)、 ...

Quantitative Models and Construction Methods - **Model Name**: PB-ROE-50 **Model Construction Idea**: The model combines Price-to-Book ratio (PB) and Return on Equity (ROE) to select stocks with high profitability and reasonable valuation[3][25] **Model Construction Process**: The PB-ROE-50 portfolio is constructed by selecting 50 stocks with the highest combined scores of PB and ROE within specific stock pools (e.g., CSI 500, CSI 800, and the entire market). The portfolio is rebalanced periodically to maintain its composition[25][26] **Model Evaluation**: The model demonstrates consistent excess returns across different stock pools, indicating its effectiveness in capturing profitable investment opportunities[25][26] - **Model Name**: Institutional Research Portfolio **Model Construction Idea**: The model leverages public and private institutional research data to identify stocks with potential excess returns[28] **Model Construction Process**: The portfolio is constructed based on institutional research data, with public research focusing on CSI 800 stocks and private research tracking broader market stocks. Stocks are selected based on research frequency and sentiment, and the portfolio is rebalanced monthly[28][29] **Model Evaluation**: The model shows positive excess returns, particularly for private research tracking strategies, suggesting its ability to capture valuable insights from institutional activities[28][29] - **Model Name**: Block Trade Portfolio **Model Construction Idea**: The model identifies stocks with high block trade activity and low volatility to capture potential excess returns[31] **Model Construction Process**: Stocks are selected based on "block trade transaction ratio" and "6-day transaction volatility." The portfolio is rebalanced monthly to maintain its focus on high-transaction, low-volatility stocks[31][32] **Model Evaluation**: The model's performance varies, with occasional excess return drawdowns, highlighting the need for careful monitoring and adjustment[31][32] - **Model Name**: Directed Issuance Portfolio **Model Construction Idea**: The model focuses on stocks involved in directed issuance events to capture event-driven investment opportunities[37] **Model Construction Process**: Stocks are selected based on directed issuance announcements, considering factors like market capitalization, rebalancing frequency, and position control. The portfolio is rebalanced periodically to align with event-driven dynamics[37][38] **Model Evaluation**: The model shows mixed results, with occasional excess return drawdowns, indicating the need for further refinement in capturing event-driven effects[37][38] --- Model Backtesting Results - **PB-ROE-50 Model** - CSI 500: Weekly excess return 1.17%, absolute return 1.99%[25][26] - CSI 800: Weekly excess return 1.21%, absolute return 2.58%[25][26] - Entire Market: Weekly excess return 1.36%, absolute return 2.51%[25][26] - **Institutional Research Portfolio** - Public Research: Weekly excess return 0.02%, absolute return 1.37%[28][29] - Private Research: Weekly excess return 0.25%, absolute return 1.61%[28][29] - **Block Trade Portfolio** - Weekly excess return -0.24%, absolute return 0.88%[31][32] - **Directed Issuance Portfolio** - Weekly excess return -0.69%, absolute return 0.43%[37][38] --- Quantitative Factors and Construction Methods - **Factor Name**: BP Factor **Factor Construction Idea**: The factor uses the Book-to-Price ratio to identify undervalued stocks[20] **Factor Construction Process**: BP is calculated as the inverse of the Price-to-Book ratio. Stocks with higher BP values are considered undervalued and selected for portfolios[20] **Factor Evaluation**: BP demonstrates positive returns in multiple industries, indicating its effectiveness in identifying undervalued stocks[23][24] - **Factor Name**: ROE Factor **Factor Construction Idea**: The factor measures profitability using Return on Equity[20] **Factor Construction Process**: ROE is calculated as net income divided by shareholder equity. Stocks with higher ROE values are considered more profitable and selected for portfolios[20] **Factor Evaluation**: ROE shows positive returns across various industries, highlighting its ability to capture profitable investment opportunities[23][24] - **Factor Name**: Nonlinear Market Cap Factor **Factor Construction Idea**: The factor captures the impact of market capitalization on stock returns using a nonlinear approach[20] **Factor Construction Process**: Nonlinear transformations of market capitalization are applied to identify stocks with specific size-related characteristics[20] **Factor Evaluation**: The factor shows negative returns, indicating challenges in capturing size-related effects[20] --- Factor Backtesting Results - **BP Factor** - Weekly return 0.30%[20] - **ROE Factor** - Weekly return 0.27%[20] - **Nonlinear Market Cap Factor** - Weekly return -0.31%[20] - **Scale Factor** - Weekly return -0.29%[20]

- The PB-ROE-50 portfolio achieved an excess return of 1.15% in the CSI 500 stock pool, 0.29% in the CSI 800 stock pool, and -0.30% in the entire market stock pool[23][24] - The public research stock selection strategy achieved an excess return of 0.54% relative to the CSI 800, while the private research tracking strategy achieved an excess return of 2.61% relative to the CSI 800[25][26] - The block trading portfolio achieved an excess return of -0.61% relative to the CSI All Share Index[29][30] - The directed issuance portfolio achieved an excess return of 0.12% relative to the CSI All Share Index[35][36] - The momentum factor and growth factor achieved positive returns of 0.12% and 0.04% respectively, while the liquidity factor, beta factor, and size factor achieved significant negative returns of -0.56%, -0.52%, and -0.40% respectively[18][20] - In the CSI 500 stock pool, the best-performing factors this week were gross profit margin TTM (1.65%), single-quarter ROA (1.40%), and single-quarter total asset gross profit margin (1.26%)[14][15] - In the liquidity 1500 stock pool, the best-performing factors this week were 5-day average turnover rate (0.45%), 5-minute return skewness (0.36%), and downside volatility ratio (0.33%)[16][17] - In the CSI 500 stock pool, the worst-performing factors this week were single-quarter net profit year-on-year growth rate (-0.42%), 5-day reversal (-0.49%), and post-morning return factor (-0.64%)[14][15] - In the liquidity 1500 stock pool, the worst-performing factors this week were momentum spring factor (-1.07%), 5-day reversal (-1.11%), and single-quarter net profit year-on-year growth rate (-1.19%)[16][17] - In the CSI 300 stock pool, the best-performing factors this week were net profit gap (1.30%), 5-day exponential moving average of trading volume (1.15%), and total asset gross profit margin TTM (1.02%)[12][13] - In the CSI 300 stock pool, the worst-performing factors this week were logarithmic market value factor (-1.02%), momentum spring factor (-1.12%), and post-morning return factor (-1.29%)[12][13] - The net asset growth rate factor performed well in the comprehensive industry, and the net profit growth rate factor performed well in the steel industry[21][22] - The BP factor performed well in the beauty and personal care industry, and the EP factor performed well in the coal industry[21][22]