Core Points - The Shanghai Composite Index opened lower but rose later, with the CSI 300 Transportation Infrastructure Index reported at 1255.20 points [1] - The CSI 300 Transportation Infrastructure Index has seen a decline of 3.23% over the past month, 5.20% over the past three months, and 11.11% year-to-date [2] Industry Summary - The CSI 300 Index categorizes its 300 sample stocks into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries, providing analytical tools for investors [2] - The CSI 300 Transportation Infrastructure Index has a market composition of 74.51% from the Shanghai Stock Exchange and 25.49% from the Shenzhen Stock Exchange [2] - Within the holdings of the CSI 300 Transportation Infrastructure Index, the airport sector accounts for 47.74%, the highway sector for 33.38%, and the port sector for 18.88% [2] Sample Adjustment Information - The index samples are adjusted biannually, with adjustments implemented on the next trading day following the second Friday of June and December each year [3] - Weight factors are generally fixed until the next scheduled adjustment, but can be altered in the event of temporary adjustments due to changes in the CSI 300 Index samples [3] - Special events affecting sample companies, such as mergers or delistings, will lead to corresponding adjustments in the CSI 300 industry index samples [3]

从沪深300交通设施指数持仓的市场板块来看，上海证券交易所占比70.62%、深圳证券交易所占比 29.38%。 从沪深300交通设施指数持仓样本的行业来看，机场占比44.74%、高速公路占比38.07%、港口占比 17.19%。 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。权重因子随样本定期调整而调整，调整时间与指数样本定期调整实施时间相同。在下一个定期 调整日前，权重因子一般固定不变。遇临时调整时，当沪深300指数调整样本时，沪深300行业指数样本 随之进行相应调整。在样本公司有特殊事件发生，导致其行业归属发生变更时，将对沪深300行业指数 样本进行相应调整。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。 金融界4月24日消息，A股三大指数收盘涨跌不一，沪深300交通设施指数 (300交通设施，L11620)报 1316.02点。 数据统计显示，沪深300交通设施指数近一个月下跌0.25%，近三个月下跌1.65%，年至今下跌6.81%。 据了解，为反映沪深300指数样本中不同行业公司证券的整体 ...

Group 1 - The Shanghai Composite Index decreased by 0.46%, while the CSI 300 Transportation Infrastructure Index reported at 1340.72 points [1] - The CSI 300 Transportation Infrastructure Index fell by 0.91% over the past month, 5.99% over the past three months, and 5.06% year-to-date [2] - The CSI 300 Index categorizes its 300 sample companies into 11 primary industries, 35 secondary industries, over 90 tertiary industries, and more than 200 quaternary industries [2] Group 2 - The CSI 300 Transportation Infrastructure Index has a market composition of 70.35% from the Shanghai Stock Exchange and 29.65% from the Shenzhen Stock Exchange [2] - Within the CSI 300 Transportation Infrastructure Index, the airport sector accounts for 44.49%, highways for 37.77%, and ports for 17.74% [2] - The index samples are adjusted biannually, with adjustments occurring on the next trading day following the second Friday of June and December [3]