上证小盘指数下跌0.56%，前十大权重包含天风证券等

Group 1 - The A-share market's three major indices closed mixed, with the Shanghai Small Cap Index down 0.56% at 4785.48 points and a trading volume of 142.12 billion [1] - The Shanghai Small Cap Index has increased by 4.76% in the past month, 5.96% in the past three months, and 3.92% year-to-date [1] - The index categorizes listed companies in the Shanghai market into different sizes based on market capitalization and trading volume, reflecting the overall performance of various scales of listed companies [1] Group 2 - The top ten weighted stocks in the Shanghai Small Cap Index include Shanghai Electric (1.03%), Chifeng Jilong Gold Mining (0.9%), Dongwu Securities (0.81%), Sichuan Changhong (0.81%), Tianfeng Securities (0.76%), Nine Company (0.75%), Rockchip (0.71%), Yongtai Energy (0.71%), Hengtong Optic-Electric (0.67%), and Chipone Technology (0.66%) [1] - The market sectors represented in the index include Industrial (22.62%), Information Technology (20.63%), Materials (12.00%), Financials (10.68%), Healthcare (8.86%), Consumer Discretionary (7.36%), Communication Services (5.27%), Consumer Staples (4.09%), Utilities (3.42%), Energy (2.81%), and Real Estate (2.28%) [2] - The index sample is adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December, with a sample adjustment ratio generally not exceeding 10% [2]