HAIER BIOMEDICAL(SH:688139) Sou Hu Cai Jing·2025-04-29 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 seen a decline of 6.84% in the past month, 2.25% in the past three months, and 3.82% 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 (12.68%), United Imaging (10.07%), Aibo Medical (7.84%), Yirui Technology (6.54%), Shengxiang Biology (4.89%), Nanwei Medical (4.79%), Xinmai Medical (4.59%), Haier Biomedical (4.41%), Yahui Long (3.61%), and Bairen Medical (3.46%) [1] - The index's holdings are entirely composed of companies listed on the Shanghai Stock Exchange, with a 100% market share [1] - In terms of industry composition, medical consumables account for 47.05%, medical devices for 31.91%, and in vitro diagnostics for 21.04% [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 occur at the same time as the sample adjustments [2] - Special circumstances may lead to temporary adjustments to the index, such as delisting of samples or corporate actions like mergers and acquisitions [2]