Group 1 - The CSI Hong Kong-Shanghai-Shenzhen Interconnection Small Comprehensive Materials Index reported a value of 4406.56 points, showing a monthly increase of 7.39%, a three-month increase of 14.25%, and a year-to-date increase of 15.75% [1] - The index is categorized into 11 industries based on the classification standards of the CSI Hong Kong-Shanghai-Shenzhen Index Series, which includes the CSI 500, CSI Hong Kong-Shanghai-Shenzhen Interconnection Small Comprehensive Index, and the CSI Hong Kong-Shanghai-Shenzhen Comprehensive Index [1] - The top ten weighted stocks in the index include Chifeng Jilong Gold Mining (1.53%), Zhaojin Mining Industry (1.28%), China Rare Earth (1.16%), and others, indicating a diverse representation of companies in the materials sector [1] Group 2 - The market share of the index's holdings shows that Shenzhen Stock Exchange accounts for 49.61%, Shanghai Stock Exchange for 38.62%, and Hong Kong Stock Exchange for 11.76% [2] - In terms of industry composition, non-ferrous metals represent 40.64%, chemicals 37.39%, non-metallic materials 9.51%, steel 8.03%, and paper and packaging 4.43% [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December, ensuring that the weight factors are updated accordingly [2]