金融界7月21日消息，上证指数高开高走，中证央企新动能主题指数 (央企新动能，931522)上涨0.96%， 报1678.38点，成交额252.76亿元。 数据统计显示，中证央企新动能主题指数近一个月上涨9.40%，近三个月上涨7.73%，年至今上涨 2.60%。 据了解，中证央企新动能主题指数从国资委下辖央企上市公司中，选取45只制造、科技与现代服务业领 域涉及产业交叉渗透发展，且在研发投入、盈利能力、产业交叉与渗透和潜力等方面具有一定代表性的 上市公司证券作为指数样本，以反映央企新动能主题上市公司证券的整体表现。该指数以2014年12月31 日为基日，以1000.0点为基点。 从指数持仓来看，中证央企新动能主题指数十大权重分别为：海康威视（9.41%）、长安汽车 （8.79%）、中航光电（6.8%）、深南电路（5.14%）、中航机载（4.05%）、中国软件（3.62%）、中 航成飞（3.53%）、招商公路（3.28%）、中航高科（3.03%）、宝信软件（2.89%）。 从中证央企新动能主题指数持仓的市场板块来看，深圳证券交易所占比62.29%、上海证券交易所占比 37.35%、北京证券交易所占比0.36% ...

Core Viewpoint - The China Securities Central Enterprise New Momentum Theme Index has shown a mixed performance, with a recent increase in value but a year-to-date decline, reflecting the overall market dynamics and the performance of selected central enterprise stocks [1][2]. Group 1: Index Performance - The China Securities Central Enterprise New Momentum Theme Index opened high and fluctuated, rising by 0.5% to 1629.68 points, with a trading volume of 19.58 billion yuan [1]. - Over the past month, the index has increased by 3.32%, while it has risen by 4.02% over the last three months, but has decreased by 0.88% year-to-date [1]. Group 2: Index Composition - The index comprises 45 representative listed companies from central enterprises under the State-owned Assets Supervision and Administration Commission, focusing on manufacturing, technology, and modern service industries [1]. - The top ten weighted stocks in the index include Hikvision (9.61%), Changan Automobile (8.91%), AVIC Optoelectronics (7.0%), and others, indicating a concentration in specific companies [1]. Group 3: Market Segmentation - The index's holdings are primarily concentrated in the Shenzhen Stock Exchange (62.23%), followed by the Shanghai Stock Exchange (37.40%) and a minimal presence in the Beijing Stock Exchange (0.37%) [1]. - In terms of industry distribution, the index shows a significant allocation to industrials (45.87%) and information technology (37.72%), with smaller allocations to consumer discretionary (9.36%), communication services (4.62%), financials (1.60%), and materials (0.84%) [2]. Group 4: Index Adjustment Mechanism - The index samples are adjusted semi-annually, with changes implemented on the next trading day following the second Friday of June and December [2]. - Weight factors are generally fixed until the next scheduled adjustment, with provisions for temporary adjustments in special circumstances, such as delisting or corporate restructuring [2].