低频选股因子周报（2026.02.13-2026.02.27）：沪深 300 指数增强组合 2026 年累计超额收益 8.02%-20260301

Quantitative Models and Construction Methods - Model Name: CSI 300 Enhanced Portfolio Model Construction Idea: The model aims to generate excess returns over the CSI 300 Index by leveraging quantitative strategies and factor-based enhancements [1][5][13] Model Construction Process: The portfolio is constructed by applying factor-based selection and weighting methodologies to the CSI 300 Index constituents. Specific factors and optimization techniques are not detailed in the report [13][15] Model Evaluation: The model demonstrates strong performance with consistent excess returns over the benchmark [13][15] - Model Name: PB-Earnings Optimized Portfolio Model Construction Idea: This model combines low valuation (PB) and high earnings factors to identify undervalued stocks with strong profitability [5][32] Model Construction Process: Stocks are selected based on a combination of low PB ratios and high earnings metrics. The portfolio is optimized to maximize exposure to these factors while maintaining diversification [32][34] Model Evaluation: The model effectively captures value opportunities and delivers significant excess returns over the CSI 300 Index [32][34] - Model Name: GARP Portfolio Model Construction Idea: The Growth at a Reasonable Price (GARP) strategy balances growth and valuation factors to identify stocks with sustainable growth potential at reasonable valuations [5][36] Model Construction Process: Stocks are screened and weighted based on a combination of growth metrics (e.g., earnings growth) and valuation metrics (e.g., PE ratio). The portfolio is constructed to achieve a balance between growth and value [36] Model Evaluation: The GARP portfolio demonstrates strong performance, particularly in capturing growth opportunities while mitigating valuation risks [36] - Model Name: Small-Cap Value Optimized Portfolio Model Construction Idea: This model focuses on small-cap stocks with low valuations to exploit the value premium in the small-cap segment [5][38][40] Model Construction Process: Stocks are selected from the small-cap universe based on valuation metrics such as PB and PE ratios. The portfolio is optimized to enhance exposure to value factors while maintaining diversification [38][40] Model Evaluation: The model captures the value premium effectively but exhibits higher volatility compared to broader market indices [38][40] - Model Name: Small-Cap Growth Portfolio Model Construction Idea: This model targets small-cap stocks with high growth potential, leveraging growth factors to identify outperforming stocks [5][42] Model Construction Process: Stocks are selected from the small-cap universe based on growth metrics such as earnings growth and revenue growth. The portfolio is constructed to maximize exposure to growth factors [42] Model Evaluation: The model captures growth opportunities but underperforms during periods of market stress or high volatility [42] Model Backtesting Results - CSI 300 Enhanced Portfolio: - Weekly return: 2.72% - Monthly return: 2.73% - YTD return: 9.77% - Excess return (YTD): 8.02% - Tracking error: 6.62% - Maximum drawdown: 2.09% [9][13][15] - PB-Earnings Optimized Portfolio: - Weekly return: 4.09% - Monthly return: 1.58% - YTD return: 7.85% - Excess return (YTD): 6.11% - Tracking error: 12.23% - Maximum drawdown: 2.38% [9][32][34] - GARP Portfolio: - Weekly return: 2.87% - Monthly return: 2.35% - YTD return: 14.05% - Excess return (YTD): 12.31% - Tracking error: 11.16% - Maximum drawdown: 1.18% [9][36] - Small-Cap Value Optimized Portfolio 1: - Weekly return: 4.03% - Monthly return: 4.16% - YTD return: 12.37% - Excess return (YTD): -5.65% - Tracking error: 10.46% - Maximum drawdown: 8.23% [9][38] - Small-Cap Value Optimized Portfolio 2: - Weekly return: 3.88% - Monthly return: 5.55% - YTD return: 18.61% - Excess return (YTD): 0.60% - Tracking error: 11.69% - Maximum drawdown: 5.62% [9][40] - Small-Cap Growth Portfolio: - Weekly return: 2.65% - Monthly return: 4.53% - YTD return: 14.07% - Excess return (YTD): -3.95% - Tracking error: 9.62% - Maximum drawdown: 6.37% [9][42] Quantitative Factors and Construction Methods - Factor Name: Market Capitalization (Size) Factor Construction Idea: Measures the relative size of companies, with larger companies expected to outperform smaller ones in certain market conditions [45][46] Factor Construction Process: Stocks are ranked by market capitalization, and the top 10% (large-cap) and bottom 10% (small-cap) are used to construct long and short portfolios, respectively. The difference in returns between the two portfolios represents the factor return [45][46] Factor Evaluation: The size factor shows mixed performance, with large-cap stocks outperforming small-cap stocks in the short term but underperforming in the long term [46][47] - Factor Name: Price-to-Book Ratio (PB) Factor Construction Idea: Identifies undervalued stocks by comparing market price to book value, with lower PB ratios indicating better value [45][46] Factor Construction Process: Stocks are ranked by PB ratio, and the top 10% (low PB) and bottom 10% (high PB) are used to construct long and short portfolios, respectively. The difference in returns between the two portfolios represents the factor return [45][46] Factor Evaluation: The PB factor demonstrates consistent performance in identifying value opportunities [46][47] - Factor Name: Return on Equity (ROE) Factor Construction Idea: Measures profitability relative to equity, with higher ROE indicating better financial performance [45][54] Factor Construction Process: Stocks are ranked by ROE, and the top 10% (high ROE) and bottom 10% (low ROE) are used to construct long and short portfolios, respectively. The difference in returns between the two portfolios represents the factor return [45][54] Factor Evaluation: The ROE factor consistently delivers positive returns, reflecting its effectiveness in capturing profitability [54][55] Factor Backtesting Results - Market Capitalization (Size): - Weekly long-short return: -0.33% - Monthly long-short return: 2.93% - YTD long-short return: 6.67% [46][47] - Price-to-Book Ratio (PB): - Weekly long-short return: 0.24% - Monthly long-short return: -0.73% - YTD long-short return: -2.22% [46][47] - Return on Equity (ROE): - Weekly long-short return: 1.35% - Monthly long-short return: -0.59% - YTD long-short return: 2.32% [54][55]