上证380指数下跌0.37%，前十大权重包含生益科技等

Core Viewpoint - The Shanghai 380 Index experienced a slight decline of 0.37% to 5332.24 points, with a trading volume of 69.297 billion yuan, reflecting a mixed performance over different time frames [1] Group 1: Index Performance - The Shanghai 380 Index has increased by 0.54% over the past month, decreased by 4.32% over the past three months, and has declined by 0.51% year-to-date [1] - The index is based on a sample of 380 securities selected from the Shanghai Stock Exchange, ranked by revenue growth, return on equity, trading volume, and total market capitalization [1] Group 2: Index Composition - The top ten weighted stocks in the Shanghai 380 Index include Hu Nong Commercial Bank (1.35%), Chengdu Bank (1.25%), and Chifeng Gold (1.22%) among others [1] - The index is exclusively composed of stocks listed on the Shanghai Stock Exchange, with a 100% representation [1] Group 3: Industry Breakdown - The industry composition of the index shows that industrials account for 26.74%, information technology for 14.14%, and materials for 12.41%, among other sectors [2] - The index samples are adjusted biannually, with changes implemented on the next trading day following the second Friday of June and December [2]