Jin Rong Jie·2025-08-21 08:27Group 1 - The A-share market's three major indices closed mixed, with the Sci-Tech 50 Index rising by 0.09% to 1149.15 points, with a trading volume of 65.718 billion [1] - The Sci-Tech 50 Index has increased by 13.96% over the past month, 15.08% over the past three months, and 16.10% year-to-date [1] - The index consists of 50 securities from the Sci-Tech board with high market capitalization and liquidity, reflecting the overall performance of representative Sci-Tech enterprises [1] Group 2 - The top ten weighted stocks in the Sci-Tech 50 Index include Cambrian (12.21%), SMIC (9.5%), Haiguang Information (8.36%), and others [1] - The industry composition of the Sci-Tech 50 Index shows that Information Technology accounts for 70.85%, Healthcare for 10.75%, and Industrial for 10.65% [2] - The index samples are adjusted quarterly, with adjustments occurring on the next trading day after the second Friday of March, June, September, and December [2]