Jin Rong Jie·2025-05-19 10:02Core Insights - The A-share market showed mixed performance with the CSI New Energy Vehicle Index declining by 0.51% to 2993.65 points, with a trading volume of 26.568 billion yuan [1] Group 1: Index Performance - The CSI New Energy Vehicle Index increased by 8.56% over the past month, decreased by 3.03% over the past three months, and has risen by 4.71% year-to-date [2] - The index reflects the overall performance of listed companies involved in lithium batteries, charging piles, and new energy vehicles, with a base date of December 31, 2011, set at 1000.0 points [2] Group 2: Index Composition - The top ten weighted companies in the CSI New Energy Vehicle Index are BYD (14.17%), Huichuan Technology (11.21%), CATL (9.88%), Sanhua Intelligent Control (4.84%), Yiwei Lithium Energy (4.45%), Huayou Cobalt (3.85%), Ganfeng Lithium (2.8%), Greeenme (2.56%), Tianqi Lithium (2.41%), and Hongfa Technology (2.2%) [2] - The index's holdings are primarily listed on the Shenzhen Stock Exchange (82.92%), followed by the Shanghai Stock Exchange (16.47%) and the Beijing Stock Exchange (0.60%) [2] - In terms of industry composition, the index is comprised of 56.00% in industrials, 25.30% in consumer discretionary, 17.56% in materials, and 1.15% in information technology [2] Group 3: Index Adjustment Mechanism - The index samples are adjusted biannually, with implementation on the next trading day following the second Friday of June and December [3] - Weight factors are generally fixed until the next scheduled adjustment, with special circumstances allowing for temporary adjustments [3] - Companies that are delisted or undergo mergers, acquisitions, or splits are handled according to specific calculation and maintenance guidelines [3]