Endovastec(SH:688016) Sou Hu Cai Jing·2025-05-28 08:38Group 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 2.05% increase over the past month but a 3.91% decrease over the past three months, and a year-to-date decline of 0.28% [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 (11.71%), United Imaging (10.72%), Aibo Medical (6.92%), Yirui Technology (6.59%), Nanwei Medical (5.3%), Shengxiang Biology (4.93%), Xinmai Medical (4.6%), Haier Biomedical (4.24%), Yahui Long (3.64%), and Aohua Endoscopy (3.34%) [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 45.64% in medical consumables, 33.41% in medical devices, and 20.95% 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 [2] - Weight factors are generally fixed until the next scheduled adjustment, with special circumstances allowing for temporary adjustments [2] - Companies that are delisted or undergo mergers, acquisitions, or splits will be handled according to calculation and maintenance guidelines [2]