Group 1 - The core viewpoint of the article is to track the performance of various index enhancement portfolios and stock selection factors across different indices, highlighting their excess returns and factor performance over the recent week and year-to-date [1][2][3]. Group 2 - The performance of the HuShen 300 index enhancement portfolio showed an excess return of -1.26% for the week and 1.88% year-to-date [5]. - The performance of the ZhongZheng 500 index enhancement portfolio showed an excess return of -0.50% for the week and 3.40% year-to-date [5]. - The ZhongZheng 1000 index enhancement portfolio had an excess return of -0.78% for the week and 4.40% year-to-date [5]. - The ZhongZheng A500 index enhancement portfolio reported an excess return of -0.22% for the week and 4.88% year-to-date [5]. Group 3 - In the HuShen 300 component stocks, factors such as one-year momentum, one-month reversal, and DELTAROE performed well [6]. - In the ZhongZheng 500 component stocks, factors like one-month reversal, SPTTM, and executive compensation showed strong performance [6]. - For ZhongZheng 1000 component stocks, factors such as non-liquidity shock, three-month earnings adjustments, and expected net profit month-on-month performed well [6]. - In the ZhongZheng A500 component stocks, one-month reversal, one-year momentum, and executive compensation were among the top-performing factors [6]. Group 4 - The HuShen 300 index enhancement products had a maximum excess return of 0.44%, a minimum of -0.66%, and a median of -0.06% for the week [19]. - The ZhongZheng 500 index enhancement products had a maximum excess return of 0.48%, a minimum of -1.30%, and a median of -0.35% for the week [19]. - The ZhongZheng 1000 index enhancement products had a maximum excess return of 1.09%, a minimum of -0.82%, and a median of -0.06% for the week [19]. - The ZhongZheng A500 index enhancement products had a maximum excess return of 0.46%, a minimum of -0.38%, and a median of -0.22% for the week [19]. Group 5 - The total number of public fund index enhancement products includes 67 for HuShen 300 with a total scale of 77.8 billion, 69 for ZhongZheng 500 with 45.2 billion, 46 for ZhongZheng 1000 with 15 billion, and 35 for ZhongZheng A500 with 22.3 billion [16].