金融界8月22日消息，上证指数高开高走，上证50等权重指数 (50等权，000050)上涨2.73%，报2309.57 点，成交额1806.45亿元。 数据统计显示，上证50等权重指数近一个月上涨4.63%，近三个月上涨7.16%，年至今上涨6.14%。 从上证50等权重指数持仓样本的行业来看，金融占比24.45%、工业占比17.45%、信息技术占比 14.91%、原材料占比9.06%、能源占比7.50%、可选消费占比5.67%、主要消费占比5.54%、通信服务占 比5.41%、医药卫生占比4.75%、公用事业占比3.47%、房地产占比1.78%。 资料显示，指数样本每半年调整一次，样本调整实施时间分别为每年6月和12月的第二个星期五的下一 交易日。每次调整的样本比例一般不超过10%。样本调整设置缓冲区，排名在40名之前的候选新样本优 先进入，排名在60名之前的老样本优先保留。特殊情况下将对指数进行临时调整。当样本退市时，将其 从指数样本中剔除。样本公司发生收购、合并、分拆等情形的处理，参照计算与维护细则处理。 从指数持仓来看，上证50等权重指数十大权重分别为：寒武纪（3.09%）、洛阳钼业（2.7%）、药明 ...

Group 1 - The Shanghai Composite Index opened lower but rose, with the SSE 50 Equal Weight Index increasing by 0.26% to 2118.58 points and a trading volume of 74.646 billion yuan [1] - The SSE 50 Equal Weight Index has risen by 2.20% in the past month, 2.43% in the past three months, and has decreased by 0.25% year-to-date [1] - The SSE 50 Equal Weight Index selects 50 representative listed companies in the Shanghai securities market based on market capitalization and liquidity, reflecting the performance of influential leading enterprises [1] Group 2 - The top ten holdings in the SSE 50 Equal Weight Index include WuXi AppTec (2.37%), Bank of China (2.32%), Bank of Communications (2.31%), Agricultural Bank of China (2.19%), Industrial and Commercial Bank of China (2.15%), LONGi Green Energy (2.14%), China Shipbuilding (2.13%), Zijin Mining (2.11%), China State Construction (2.11%), and Luoyang Molybdenum (2.11%) [1] - The industry composition of the SSE 50 Equal Weight Index shows that finance accounts for 25.16%, industrials 18.15%, information technology 13.44%, materials 8.18%, energy 7.65%, consumer discretionary 5.81%, communication services 5.76%, consumer staples 5.63%, healthcare 4.42%, utilities 3.89%, and real estate 1.90% [2] - The index samples are 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]