国泰海通｜金工：根据量化模型信号，1月建议超配小盘风格，均衡配置价值成长风格

Group 1 - The report suggests an overweight allocation to small-cap stocks for January, while recommending an equal-weight allocation to value and growth styles based on quantitative model signals [1] - As of the end of December, the quantitative model signal for small-cap stocks was 0.17, indicating a preference for small-cap over large-cap stocks [1] - The long-term view indicates that the current market capitalization factor valuation spread is 0.89, which is still below the historical peak range of 1.7 to 2.6, suggesting continued optimism for small-cap stocks [1] Group 2 - The quantitative model signal for value and growth styles is 0, recommending an equal-weight allocation for January [1] - As of the end of December, the model's return for value and growth styles was 22.72%, with an excess return of 1.93% compared to the equal-weight benchmark of 20.4% [1] - The report provides detailed strategy construction in a separate document focused on monthly and weekly value and growth style rotation strategies [1] Group 3 - Among eight major style factors, momentum and value factors showed high positive returns, while dividend factors exhibited high negative returns [2] - For the year, volatility and growth factors had high positive returns, while liquidity and large-cap factors showed negative returns [2] - The report updates the factor covariance matrix, which is essential for predicting stock portfolio risk, using a multi-factor model [2]