MJNY(SZ:000723) Jin Rong Jie·2025-03-31 10:24Group 1 - The Shanghai Composite Index decreased by 0.46%, while the China Securities Coal Index fell by 1.19%, closing at 1939.04 points with a trading volume of 7.472 billion [1] - The China Securities Coal Index has increased by 3.21% over the past month, but has decreased by 8.83% over the last three months and is down 9.20% year-to-date [1] - The index includes listed companies involved in coal mining and processing, reflecting the overall performance of coal-related securities [1] Group 2 - The top ten weighted companies in the China Securities Coal Index are: China Shenhua (10.63%), Shaanxi Coal and Chemical Industry (9.49%), Yongtai Energy (8.7%), Yanzhou Coal Mining (7.2%), Shanxi Coking Coal (5.89%), China Coal Energy (5.55%), Lu'an Environmental Energy (4.35%), Huaibei Mining (4.25%), Meijin Energy (4.12%), and Pingdingshan Tianan Coal (3.86%) [1] - The index's holdings are primarily listed on the Shanghai Stock Exchange, accounting for 86.49%, while the Shenzhen Stock Exchange accounts for 13.51% [1] - The entire sample of the China Securities Coal Index is categorized under the energy sector, with a 100% allocation [1] Group 3 - The index sample is adjusted every six months, specifically on the second Friday of June and December, with weight factors adjusted accordingly [2] - In special circumstances, the index may undergo temporary adjustments, such as when a sample company is delisted or undergoes mergers, acquisitions, or splits [2]