Group 1 - The core index of the CSI 1000 Public Utilities Index closed at 3151.51 points, with mixed performance among the three major A-share indices [1] - The CSI 1000 Public Utilities Index has decreased by 0.62% over the past month, increased by 3.49% over the past three months, and has declined by 3.66% year-to-date [2] - The index is composed of liquid and representative securities from various industries, providing diverse investment options for investors [2] Group 2 - The top ten weighted stocks in the CSI 1000 Public Utilities Index include Jilin Electric Power (6.89%), Jinkai New Energy (5.33%), and Linyang Energy (5.24%) [2] - The index's holdings are primarily from the Shanghai Stock Exchange (55.26%) and the Shenzhen Stock Exchange (44.74%) [2] - The industry composition of the index shows that electricity and grid account for 72.26%, gas for 15.98%, water services for 10.17%, and heating and others for 1.59% [2] Group 3 - The index samples are adjusted semi-annually, with adjustments implemented on the next trading day following the second Friday of June and December [3] - In special circumstances, the index may undergo temporary adjustments, such as when a sample stock is delisted or undergoes mergers, acquisitions, or splits [3] - Changes in the industry classification of sample stocks will also lead to corresponding adjustments in the CSI 1000 industry index [3]