Group 1: Davis Double-Click Strategy - The Davis Double-Click strategy involves buying stocks with growth potential at a lower price-to-earnings (PE) ratio, waiting for growth to manifest, and then selling for a multiplier effect, achieving a dual benefit from earnings per share (EPS) and PE [1][7] - The strategy has achieved an annualized return of 26.45% during the backtest period from 2010 to 2017, exceeding the benchmark by 21.08% [9] - Year-to-date, the strategy has a cumulative absolute return of 6.18%, outperforming the CSI 500 index by 7.90%, with a weekly excess return of 2.27% [10] 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 after earnings announcements [2][12] - This strategy has achieved an annualized return of 28.17% since 2010, with an annualized excess return of 26.67% over the benchmark [15] - The current year's cumulative absolute return for this strategy is 8.31%, exceeding the benchmark by 10.03%, with a weekly excess return of 4.31% [15] 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, utilizing PBROE and PEG factors to identify undervalued stocks with strong profitability and growth potential [3][17] - The portfolio has shown stable excess returns in historical backtesting, with a year-to-date excess return of 7.41% relative to the CSI 300 index [17] - The weekly excess return for this portfolio is 1.33%, and the monthly excess return is 4.08% [17]

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]

Quantitative Models and Construction Methods 1. Model Name: Davis Double Hit Strategy - **Model Construction Idea**: The strategy involves buying stocks with growth potential at a low P/E ratio and selling them after growth materializes and the P/E ratio increases, achieving a "double hit" effect from EPS and P/E[7] - **Model Construction Process**: - Identify stocks with accelerating earnings growth - Evaluate the reasonableness of stock pricing using the PEG indicator - Select stocks with high earnings growth potential and controlled downside P/E risk[7] - **Model Evaluation**: The strategy demonstrates strong stability, with annualized excess returns exceeding 11% in all seven years of the backtest period[8] 2. Model Name: Net Profit Gap Strategy - **Model Construction Idea**: This strategy combines fundamental and technical factors, focusing on stocks with earnings surprises ("net profit") and a significant upward price gap after earnings announcements ("gap")[11] - **Model Construction Process**: - Screen stocks with earnings surprises based on earnings forecasts and financial reports from 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[11] - **Model Evaluation**: The strategy achieves high annualized returns and excess returns, indicating strong performance and market recognition of earnings surprises[14] 3. Model Name: CSI 300 Enhanced Portfolio - **Model Construction Idea**: Based on investor preferences, the strategy uses factors such as PBROE and PEG to identify undervalued stocks with strong profitability and growth potential[16] - **Model Construction Process**: - Construct the PBROE factor as the difference between the percentile ranks of PB and ROE to identify stocks with low valuation and high profitability - Construct the PEG factor as the difference between the percentile ranks of PE and growth rate to find undervalued stocks with reliable growth potential - Combine these factors to build an enhanced CSI 300 portfolio[16] - **Model Evaluation**: The strategy demonstrates stable historical excess returns, aligning with investor preferences for growth and value[20] --- Backtest Results of Models 1. Davis Double Hit Strategy - **Annualized Return**: 26.45% (2010-2017)[8] - **Annualized Excess Return**: 21.08% (2010-2017)[8] - **Year-to-Date Absolute Return**: 7.15% (2025)[8] - **Year-to-Date Excess Return**: 4.80% (2025)[8] - **Weekly Excess Return**: -0.65% (2025)[8] - **Monthly Excess Return**: -1.07% (2025)[8] 2. Net Profit Gap Strategy - **Annualized Return**: 28.60% (2010-present)[14] - **Annualized Excess Return**: 26.80% (2010-present)[14] - **Year-to-Date Absolute Return**: 9.39% (2025)[14] - **Year-to-Date Excess Return**: 7.05% (2025)[14] - **Weekly Excess Return**: 3.07% (2025)[14] 3. CSI 300 Enhanced Portfolio - **Annualized Return**: 8.99% (full sample)[18] - **Annualized Excess Return**: 8.42% (full sample)[18] - **Year-to-Date Absolute Return**: -0.98% (2025)[20] - **Year-to-Date Excess Return**: 0.16% (2025)[20] - **Weekly Excess Return**: 1.94% (2025)[20] - **Monthly Excess Return**: -2.49% (2025)[20]