Quantitative Models and Construction Methods - **Model Name**: Davis Double Play **Model Construction Idea**: The strategy involves buying stocks with growth potential at a low PE ratio and selling them after growth materializes and PE increases, achieving a multiplier effect through EPS and PE growth ("double play")[8] **Model Construction Process**: The strategy evaluates stocks based on PEG (Price/Earnings to Growth) to assess pricing rationality. Companies with accelerating earnings growth are targeted, as higher growth rates theoretically justify higher valuations, effectively controlling downside PE risks[8] **Model Evaluation**: The strategy demonstrated strong stability during the backtesting period, with annual excess returns exceeding 11% in all seven complete years from 2010 to 2017[10] - **Model Name**: Net Profit Gap Strategy **Model Construction Idea**: This strategy combines fundamental and technical analysis, focusing on "net profit surprises" and "gap behavior" after earnings announcements[13] **Model Construction Process**: Stocks are screened based on earnings surprises from the past two months' earnings forecasts and financial reports. The top 50 stocks with the highest gap magnitude on the first trading day post-announcement are selected to construct an equal-weight portfolio[13] **Model Evaluation**: The strategy achieved consistent high returns, with annualized excess returns of 27.17% since 2010, showcasing strong performance stability[17] - **Model Name**: CSI 300 Enhanced Portfolio **Model Construction Idea**: The model is based on investor preferences categorized into GARP, growth, and value styles. It uses PBROE and PEG factors to identify undervalued stocks with strong profitability and growth potential[19] **Model Construction Process**: - **PBROE Factor**: Constructed using the difference in percentiles between PB (Price-to-Book) and ROE (Return on Equity) to identify stocks with low valuation and high profitability[19] - **PEG Factor**: Constructed using the difference in percentiles between PE (Price-to-Earnings) and growth rate to find undervalued stocks with reliable growth potential[19] **Model Evaluation**: The model demonstrated stable excess returns in historical backtesting, aligning with investor preferences for growth and value stocks[23] --- Model Backtesting Results - **Davis Double Play** - Annualized Return: 26.45% - Annualized Excess Return: 21.08% - This Year Absolute Return: 11.24% - This Year Excess Return (vs CSI 500): 12.19% - Weekly Excess Return (20250526-20250530): -3.02% - Full Sample Excess Return: 21.71% - Maximum Relative Drawdown: -20.14% - Return-to-Drawdown Ratio: 1.08[10][11] - **Net Profit Gap Strategy** - Annualized Return: 28.71% - Annualized Excess Return: 27.17% - This Year Absolute Return: 17.81% - This Year Excess Return: 18.76% - Weekly Excess Return (20250526-20250530): 0.57% - Full Sample Excess Return: 27.17% - Maximum Relative Drawdown: -37.12% - Return-to-Drawdown Ratio: 0.73[15][17] - **CSI 300 Enhanced Portfolio** - Annualized Return: 9.47% - Annualized Excess Return: 9.00% - This Year Absolute Return: 8.02% - This Year Excess Return: 10.42% - Weekly Excess Return (20250526-20250530): 1.79% - Monthly Excess Return (20250501-20250530): 4.03% - Full Sample Excess Return: 9.00% - Maximum Relative Drawdown: -9.18% - Return-to-Drawdown Ratio: 0.98[21][23] --- Quantitative Factors and Construction Methods - **Factor Name**: PBROE **Factor Construction Idea**: Identifies stocks with low valuation and high profitability[19] **Factor Construction Process**: Calculated as the difference in percentiles between PB and ROE[19] - **Factor Name**: PEG **Factor Construction Idea**: Targets undervalued stocks with reliable growth potential[19] **Factor Construction Process**: Calculated as the difference in percentiles between PE and growth rate[19] --- Factor Backtesting Results - **PBROE Factor** - Incorporated into CSI 300 Enhanced Portfolio, contributing to stable excess returns[19][23] - **PEG Factor** - Incorporated into CSI 300 Enhanced Portfolio, contributing to stable excess returns[19][23]

Core Viewpoint - The article discusses the current state of the A-share market and emphasizes the importance of understanding investment styles and strategies for both novice and experienced investors [2]. Investment Philosophy - Investors with clear investment goals are more likely to align with the investment philosophy presented, which includes growth-oriented investments for long-term appreciation and value investments for capital preservation [8]. - It is crucial for new investors to understand their risk tolerance and enhance their professional knowledge, as the stock market is characterized by high volatility and risk [9]. - The principle of "never lose money" is highlighted as a fundamental investment philosophy, emphasizing risk control as the top priority [10]. Timing and Valuation - The article addresses the challenges of market timing, suggesting strategies like pyramid trading, grid trading, and dollar-cost averaging to navigate market fluctuations [11]. - Valuation analysis is deemed essential for determining a stock's investment value, with comparisons made across historical valuations, industry peers, and market stages [12]. Stock Selection Logic - The article provides insights on common investor challenges, such as selling stocks that subsequently rise, emphasizing the importance of realizing profits and maintaining a clear mindset [14]. - A combination of top-down and bottom-up analysis is recommended for stock selection, focusing on market respect and technical patterns alongside fundamental analysis [15]. - When faced with significant declines in held stocks, a model analysis is suggested to determine whether to add to positions or cut losses based on market conditions [16]. Industry Preferences - The article indicates a preference for industries that show growth potential, specifically highlighting automotive parts, artificial intelligence, and electronic components as sectors of interest for the current year [17]. - A "good company" is defined as one with strong growth prospects, stable growth capabilities, and industry leadership, with a focus on stocks expected to rise in the short term [18]. Financial Reporting Importance - Financial reports are considered crucial, with key metrics such as Return on Equity (ROE), net profit, and debt ratio emphasized as essential for investors to understand [19].

Group 1: Davis Double-Click Strategy - The Davis Double-Click strategy involves buying stocks with low price-to-earnings (PE) ratios that have growth potential, selling them once growth is realized and PE increases, thus achieving a "double-click" effect on earnings per share (EPS) and PE [8][10] - The strategy achieved an annualized return of 26.45% during the backtest period from 2010 to 2017, outperforming the benchmark by 21.08% [10] - Year-to-date, the strategy has generated a cumulative absolute return of 14.32%, exceeding the CSI 500 index by 15.59% [11] Group 2: Net Profit Gap Strategy - The Net Profit Gap strategy focuses on selecting stocks based on fundamental and technical resonance, where "net profit" refers to earnings surprises and "gap" indicates a significant upward price jump on the first trading day after earnings announcements [13][17] - Since 2010, this strategy has achieved an annualized return of 28.67%, with an annualized excess return of 27.15% over the benchmark [17] - The current year's cumulative absolute return for this strategy is 16.76%, outperforming the benchmark by 18.03% [17] Group 3: Enhanced CSI 300 Portfolio - The Enhanced CSI 300 portfolio is constructed based on investor preferences, including GARP (Growth at a Reasonable Price), growth, and value investing styles, focusing on stocks with low valuations and strong profitability [19] - Historical backtesting shows stable excess returns for this strategy, with a year-to-date excess return of 8.60% relative to the CSI 300 index [19][20] - The strategy has achieved a weekly excess return of 1.13% and a monthly excess return of 2.18% [20]

Group 1: Davis Double-Click Strategy - The Davis Double-Click strategy involves buying stocks with growth potential at lower price-to-earnings (PE) ratios, selling them once growth is realized and PE increases, achieving a multiplier effect on returns, specifically targeting both earnings per share (EPS) and PE for a "double-click" effect [1][8] - Historical backtesting from 2010 to 2017 showed an annualized return of 26.45%, exceeding the benchmark by 21.08%, with consistent excess returns over 11% in each of the seven complete years [9] - Year-to-date, the strategy has achieved a cumulative absolute return of 15.08%, outperforming the CSI 500 index by 15.25%, and has exceeded the index by 2.36% in the past week [1][9] Group 2: Net Profit Discontinuity Strategy - The Net Profit Discontinuity strategy focuses on selecting stocks based on fundamental and technical resonance, where "net profit" refers to earnings surprises, and "discontinuity" indicates a significant upward price gap on the first trading day following earnings announcements, reflecting market recognition of the earnings report [2][12] - Since 2010, this strategy has achieved an annualized return of 28.78%, with an annualized excess return of 27.18%, and a cumulative absolute return of 17.67% this year, outperforming the benchmark by 17.85% [2][16] - The strategy has also shown a weekly excess return of 2.68% [2][16] Group 3: Enhanced CSI 300 Portfolio - The Enhanced CSI 300 portfolio is constructed based on investor preferences categorized as GARP (Growth at a Reasonable Price), growth-oriented, and value-oriented, aiming to identify undervalued stocks with strong profitability and stable growth potential [3][18] - Historical backtesting indicates stable excess returns for this strategy, with a year-to-date excess return of 7.41% relative to the CSI 300 index, and a weekly excess return of 0.13% [3][18] - The strategy utilizes PBROE and PEG factors to identify stocks with low valuations and strong earnings capabilities, as well as those with reliable growth potential [3][18]

Quantitative Models and Construction Methods 1. Model Name: Davis Double Play Strategy - **Model Construction Idea**: The strategy involves buying stocks with growth potential at a low P/E ratio and selling them after their growth potential is realized, leading to an increase in both EPS and P/E, thereby achieving a "double play" effect [2][8] - **Model Construction Process**: - Identify stocks with accelerating earnings growth - Evaluate the reasonableness of stock pricing using the PEG indicator, which considers the relationship between P/E and earnings growth rate - Select stocks with controlled downside risk in P/E and high growth potential [8] - **Model Evaluation**: The strategy demonstrates strong stability, with annual excess returns exceeding 11% in all seven complete years during the backtest period from 2010 to 2017 [11] 2. Model Name: Net Profit Gap Strategy - **Model Construction Idea**: This strategy combines fundamental and technical analysis, focusing on stocks with earnings surprises ("net profit") and a significant upward price gap ("gap") following earnings announcements [3][13] - **Model Construction Process**: - Screen stocks with earnings surprises based on earnings forecasts and financial reports over the past two months - Rank stocks by the magnitude of the price gap on the first trading day after the earnings announcement - Construct an equal-weight portfolio of the top 50 stocks with the largest price gaps [13] - **Model Evaluation**: The strategy has achieved a high annualized return of 28.51% since 2010, with an annualized excess return of 26.74% over the benchmark, demonstrating strong performance [17] 3. Model Name: CSI 300 Enhanced Portfolio - **Model Construction Idea**: The model is based on investor preferences, categorized into GARP, growth, and value styles. It uses PBROE and PEG factors to identify undervalued stocks with strong profitability and growth potential [4][19] - **Model Construction Process**: - Construct the PBROE factor as the difference between the percentile ranks of PB and ROE, targeting undervalued stocks with strong profitability - Construct the PEG factor as the difference between the percentile ranks of PE and growth rate, targeting undervalued stocks with reliable growth potential - Combine these factors to build an enhanced CSI 300 portfolio [19] - **Model Evaluation**: The model has demonstrated stable excess returns in historical backtests, with consistent outperformance relative to the CSI 300 index [19] --- Model Backtest Results 1. Davis Double Play Strategy - **Annualized Return**: 26.45% (2010-2017) - **Annualized Excess Return**: 21.08% (2010-2017) - **Cumulative Absolute Return (2025 YTD)**: 9.36% - **Cumulative Excess Return (2025 YTD)**: 7.27% - **Weekly Excess Return (2025)**: -1.29% - **Maximum Relative Drawdown**: -20.14% - **Return-to-Drawdown Ratio**: 1.07 [2][11][12] 2. Net Profit Gap Strategy - **Annualized Return**: 28.51% (2010-present) - **Annualized Excess Return**: 26.74% (2010-present) - **Cumulative Absolute Return (2025 YTD)**: 10.90% - **Cumulative Excess Return (2025 YTD)**: 8.81% - **Weekly Excess Return (2025)**: -0.16% - **Maximum Relative Drawdown**: -37.12% - **Return-to-Drawdown Ratio**: 0.72 [3][15][17] 3. CSI 300 Enhanced Portfolio - **Annualized Return**: 9.18% (full sample) - **Annualized Excess Return**: 8.66% (full sample) - **Cumulative Absolute Return (2025 YTD)**: 2.42% - **Cumulative Excess Return (2025 YTD)**: 4.29% - **Weekly Excess Return (2025)**: 1.57% - **Maximum Relative Drawdown**: -9.18% - **Return-to-Drawdown Ratio**: 0.94 [4][19][20]