一、本周指数增强组合表现 沪深300指数增强组合本周超额收益0.77%，本年超额收益3.14%。 中证500指数增强组合本周超额收益1.14%，本年超额收益3.91%。 中证1000指数增强组合本周超额收益0.79%，本年超额收益5.21%。 二、本周选股因子表现跟踪 沪深300成分股中3个月盈利上下调、标准化预期外盈利、单季净利同比增速 等因子表现较好。 中证500成分股中预期PEG、BP、标准化预期外收入等因子表现较好。 中证1000成分股中预期净利润环比、预期PEG、单季超预期幅度等因子表现 较好。 公募基金重仓股中一年动量、3个月盈利上下调、单季净利同比增速等因子 表现较好。 三、本周公募基金指数增强产品表现跟踪 沪深300指数增强产品本周超额收益最高2.02%，最低-0.56%，中位数 0.45%。 中证500指数增强产品本周超额收益最高1.36%，最低-0.28%，中位数 0.59%。 中证1000指数增强产品本周超额收益最高1.44%，最低-0.17%，中位数 0.78%。 主 要 结 论 一 国信金工指数增强组合表现跟踪 国信金工指数增强组合的构建流程主要包括收益预测、风险控制和组合优化三块， ...

Group 1 - The core viewpoint of the article is to track the performance of index-enhanced portfolios and stock selection factors across different indices, highlighting their excess returns and the effectiveness of various stock selection factors [1][2][14]. Group 2 - The performance of the CSI 300 index-enhanced portfolio showed an excess return of -1.25% for the week and 1.61% year-to-date [1][2]. - The performance of the CSI 500 index-enhanced portfolio indicated an excess return of -1.53% for the week and 2.17% year-to-date [1][2]. - The performance of the CSI 1000 index-enhanced portfolio recorded an excess return of -0.88% for the week and 3.15% year-to-date [1][2]. Group 3 - In the CSI 300 sample space, factors such as non-liquidity shock, three-month turnover, and one-month turnover performed well recently [4][5]. - In the CSI 500 sample space, factors like expected net profit month-on-month, non-liquidity shock, and three-month earnings adjustments showed strong performance [6][8]. - In the CSI 1000 sample space, factors including three-month institutional coverage and turnover metrics performed well [9][10]. Group 4 - The public fund index-enhanced products for the CSI 300 had a maximum excess return of 1.04% and a minimum of -2.85% for the week, with a median of -0.53% [16]. - The public fund index-enhanced products for the CSI 500 had a maximum excess return of 0.86% and a minimum of -1.80% for the week, with a median of -0.62% [18]. - The public fund index-enhanced products for the CSI 1000 had a maximum excess return of 0.86% and a minimum of -1.80% for the week, with a median of -0.62% [18]. Group 5 - The total number of public fund index-enhanced products includes 67 for the CSI 300 with a total scale of 81.5 billion, 68 for the CSI 500 with a total scale of 49.3 billion, and 46 for the CSI 1000 with a total scale of 16.9 billion [15].