IRAY TECHNOLOGY(SH:688301) Sou Hu Cai Jing·2025-08-04 09:15Core Insights - The Shanghai Stock Exchange Science and Technology Innovation Board Medical Index (Sci-Tech Medical Index) reported a value of 807.76 points, showing a low opening and a high closing on August 4 [1] - The Sci-Tech Medical Index has increased by 8.56% over the past month, 13.65% over the past three months, and 11.39% year-to-date [2] Index Composition - The Sci-Tech Medical Index includes no more than 30 listed companies in the medical field from the Sci-Tech Innovation Board, reflecting the overall performance of these securities [2] - The index is based on a starting point of 1000.0 points as of December 30, 2022 [2] - The top ten weighted companies in the index are: - Huatai Medical (9.47%) - United Imaging (9.08%) - Hotgen Biotech (8.33%) - Aibo Medical (6.07%) - Yirui Technology (6.05%) - Nanwei Medical (5.62%) - Xinmai Medical (4.81%) - Shengxiang Biotech (4.6%) - Haier Biomedical (3.76%) - Tianzhihang (3.29%) [2] Market and Sector Breakdown - The Sci-Tech Medical Index is fully composed of companies listed on the Shanghai Stock Exchange [3] - The sector distribution of the index's holdings is as follows: - Medical consumables: 42.88% - Medical devices: 28.80% - In-vitro diagnostics: 28.32% [3] - The index samples are adjusted quarterly, with adjustments occurring in the second Friday of March, June, September, and December [3]