Endovastec(SH:688016) Sou Hu Cai Jing·2025-05-08 08:32Group 1 - The core viewpoint of the article highlights the performance of the Shanghai Stock Exchange Sci-Tech Innovation Board Medical Index, which has shown a 4.40% increase over the past month and a 0.19% increase over the past three months, while it has decreased by 0.01% year-to-date [1] - The index consists of no more than 30 listed companies in the medical field selected from the Sci-Tech Innovation Board, reflecting the overall performance of medical listed companies [1] - The index was established with a base date of December 30, 2022, and a base point of 1000.0 [1] Group 2 - The top ten weighted companies in the index include: Huatai Medical (11.76%), United Imaging (10.54%), Aibo Medical (7.72%), Yirui Technology (6.34%), Shengxiang Biology (5.03%), Nanwei Medical (5.02%), Xinmai Medical (4.57%), Haier Biomedical (4.39%), Yahui Long (3.59%), and Aohua Endoscopy (3.38%) [1] - The index's holdings are entirely composed of companies listed on the Shanghai Stock Exchange, with a 100% market share [1] - The industry composition of the index holdings includes 46.02% in medical consumables, 33.17% in medical devices, and 20.81% in in vitro diagnostics [1] Group 3 - The index sample is adjusted quarterly, with adjustments implemented on the next trading day following the second Friday of March, June, September, and December each year [2] - Weight factors are adjusted in accordance with the sample adjustments, which are fixed until the next scheduled adjustment unless a special situation arises [2] - Companies that are delisted or undergo mergers, acquisitions, or splits will be processed according to the calculation and maintenance guidelines [2]