UIH(SH:688271) Sou Hu Cai Jing·2025-06-12 08:41Group 1 - The core viewpoint of the news is that the Shanghai Stock Exchange Sci-Tech Innovation Board Medical Index has shown mixed performance, with a recent increase of 1.89% over the past month, a decrease of 3.03% over the past three months, and a year-to-date increase of 1.35% [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 (11.48%), United Imaging (10.13%), Aibo Medical (6.9%), Yirui Technology (6.49%), Nanwei Medical (5.37%), Shengxiang Biology (4.91%), Xinmai Medical (4.69%), Haier Biomedical (4.16%), Yahui Long (3.62%), and Aohua Endoscopy (3.59%) [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with a 100% allocation [1] - The industry composition of the index holdings includes: medical consumables (45.40%), medical devices (33.27%), and in vitro diagnostics (21.34%) [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 temporary adjustments made under special circumstances [2] - Companies that are delisted or undergo mergers, acquisitions, or splits will be handled according to calculation and maintenance guidelines [2]