Group 1 - The core index, the CSI 1000 Quality Index, has shown a significant increase, with a rise of 5.05% over the past month, 10.02% over the past three months, and 10.53% year-to-date [2] - The CSI 1000 Quality Index is composed of 100 listed companies selected from the CSI 1000 Index based on their stability in operations, profitability, and quality of earnings [2] - The index was established on December 31, 2010, with a base value of 1000.0 points [2] Group 2 - The top ten weighted companies in the CSI 1000 Quality Index include Tonghua Golden Horse (3.49%), Longxin General (2.22%), and Jibite (2.18%) among others [2] - The market capitalization distribution shows that 53.29% of the holdings are from the Shenzhen Stock Exchange, while 46.71% are from the Shanghai Stock Exchange [2] Group 3 - The industry composition of the CSI 1000 Quality Index includes 22.74% in healthcare, 20.10% in industrials, and 14.29% in information technology, among others [3] - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [3] - Adjustments to the index may occur under special circumstances, such as delisting or corporate actions like mergers and acquisitions [3]

Core Points - The CSI 1000 Quality Index has shown a decline of 8.35% over the past month, an increase of 1.30% over the last three months, and a year-to-date decrease of 1.62% [1] - The index is composed of 100 listed companies selected from the CSI 1000 Index based on their operational stability, profitability, and quality metrics [1] - The top ten weighted companies in the CSI 1000 Quality Index include Yuxin Technology (3.39%), Dataport (3.21%), Tonghua Jinma (3.11%), and others [1] Industry Composition - The industry distribution of the CSI 1000 Quality Index shows that the healthcare sector accounts for 24.45%, industrials for 18.35%, and information technology for 14.63% [2] - Other sectors include consumer discretionary (9.77%), financials (9.69%), communication services (8.13%), and materials (5.64%) [2] - The index undergoes semi-annual adjustments, with changes implemented on the next trading day following the second Friday of June and December [2]