因子协方差矩阵更新
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国泰海通|金工:综合量化模型信号和日历效应,12月建议超配大盘风格、价值风格
国泰海通证券研究· 2025-12-05 10:48
Core Insights - The report suggests an overweight allocation to large-cap and value styles for December based on quantitative model signals and calendar effects [1][2]. Size and Style Rotation Monthly Strategy - The latest quantitative model signal for the end of November is -0.17, indicating a preference for large-cap stocks. Historically, large-cap stocks have outperformed in December, leading to a recommendation for an overweight allocation in December [1]. - The year-to-date return for the size rotation quantitative model is 24.71%, with an excess return of 1.5% compared to an equal-weight benchmark of 23.21% [1]. - The combined strategy, incorporating subjective views, has yielded a return of 26.1%, with an excess return of 2.89% [1]. Value and Growth Style Rotation Monthly Strategy - The monthly quantitative model signal is -0.33, indicating a preference for value stocks. Historically, value style has slightly outperformed in December, leading to a recommendation for an overweight allocation in December [2]. - The year-to-date return for the value-growth style rotation model is 20.37%, with an excess return of 2.99% compared to an equal-weight benchmark of 16.88% [2]. Style Factor Performance Tracking - Among eight major factors, dividend and quality factors showed high positive returns in November, while large-cap and momentum factors exhibited high negative returns [2]. - For the year, volatility and growth factors had high positive returns, while liquidity and large-cap factors had high negative returns [2]. - In November, residual volatility, short-term reversal, and earnings quality factors had high positive returns, while momentum, profitability, and large-cap factors had high negative returns [2]. Factor Covariance Matrix Update - The report updates the latest factor covariance matrix as of November 28, 2025, which is essential for predicting stock portfolio risks using a multi-factor model [3].