Group 1 - The core index, the CN Industrial Composite Index, has shown a significant increase of 5.77% over the past month, 11.65% over the past three months, and 6.12% year-to-date, reaching 2538.90 points [1] - The index is designed to reflect the overall performance of different industry securities from mainland Chinese enterprises, categorized according to the China Securities Index industry classification standards [1] - The top ten weighted stocks in the index include CATL (6.36%), China Railway Shanghai Group (1.49%), China State Construction Engineering (1.15%), and others, indicating a diverse representation of key sectors [1] Group 2 - The market capitalization distribution of the index shows that Shenzhen Stock Exchange accounts for 47.12%, Shanghai Stock Exchange for 44.98%, and other exchanges like Hong Kong and New York have smaller shares [2] - In terms of industry representation, the index is heavily weighted towards electric power equipment (29.21%) and machinery manufacturing (28.67%), with transportation and construction also holding significant portions [2] - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December, ensuring the index remains relevant to current market conditions [3]

Core Points - The China A-shares market showed mixed performance with the CN Industrial Comprehensive Index closing at 2306.63 points, reflecting a decline of 7.42% over the past month, 1.74% over the past three months, and 3.58% year-to-date [1] Group 1: Index Overview - The CN Industrial Comprehensive Index is designed to reflect the overall performance of different industry securities from mainland Chinese enterprises, classified according to the China Securities Index industry classification standard [1] - The index is based on a starting point of 1000.0 points as of December 31, 2004 [1] Group 2: Index Holdings - The top ten weighted stocks in the CN Industrial Comprehensive Index include CATL (6.13%), Beijing-Shanghai High-Speed Railway (1.72%), and others such as Huichuan Technology (1.38%) and Sany Heavy Industry (1.14%) [1] - The index's market segment distribution shows that the Shenzhen Stock Exchange accounts for 47.03%, while the Shanghai Stock Exchange accounts for 45.33% [2] Group 3: Industry Composition - The industry composition of the CN Industrial Comprehensive Index indicates that machinery manufacturing constitutes 29.03%, followed by electric power equipment at 28.24% and transportation at 14.11% [2] - Other notable sectors include construction decoration (9.83%), aerospace and defense (8.17%), and environmental protection (3.82%) [2] Group 4: Sample Adjustment - The index samples are adjusted biannually, specifically on the second Friday of June and December, with provisions for temporary adjustments under special circumstances [3] - Adjustments occur when there are changes in the industry classification of sample companies or when companies are delisted [3]