中证新能源指数下跌1.29%，前十大权重包含通威股份等

Core Viewpoint - The China Securities New Energy Index has experienced a decline in recent months, reflecting the overall performance of listed companies in the renewable energy sector [2]. Group 1: Index Performance - The China Securities New Energy Index fell by 1.29% to 1768.83 points, with a trading volume of 36.878 billion yuan [1]. - Over the past month, the index has decreased by 1.69%, by 10.68% over the last three months, and by 9.32% year-to-date [2]. Group 2: Index Composition - The index includes companies involved in renewable energy production, application, storage, and related equipment, with a base date of December 31, 2011, set at 1000.0 points [2]. - The top ten weighted companies in the index are: CATL (9.99%), Sungrow Power (5.53%), LONGi Green Energy (5.26%), China Nuclear Power (4.73%), Three Gorges Energy (3.69%), TBEA (3.52%), EVE Energy (3.15%), Huayou Cobalt (2.96%), Tongwei Co. (2.45%), and Ganfeng Lithium (2.13%) [2]. Group 3: Market and Sector Breakdown - The index's holdings are primarily listed on the Shenzhen Stock Exchange (58.70%), followed by the Shanghai Stock Exchange (40.87%) and the Beijing Stock Exchange (0.43%) [2]. - In terms of industry composition, the index is comprised of 73.71% in industrials, 14.26% in utilities, and 12.02% in materials [2]. Group 4: Index Adjustment Mechanism - The index samples are adjusted biannually, with adjustments occurring on the next trading day after 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].