Jin Rong Jie·2025-08-01 13:52Group 1 - The core viewpoint of the news is that the China Securities Index for the shipbuilding industry has shown a slight decline recently, but it has experienced significant growth over the past three months and year-to-date [1] - The China Securities Index for the shipbuilding industry decreased by 1.0% to 1397.26 points, with a trading volume of 12.892 billion yuan on the reporting day [1] - Over the past month, the index has increased by 0.10%, by 12.75% over the last three months, and by 8.99% year-to-date [1] Group 2 - The index comprises 40 representative listed companies involved in ship materials, ship supporting, ship manufacturing, and shipping, reflecting the overall performance of the shipbuilding industry [1] - The top ten weighted companies in the index are China Shipbuilding (15.06%), China Heavy Industry (14.33%), China Power (14.31%), and others, indicating a concentration in a few major players [1] - The index's holdings are primarily listed on the Shanghai Stock Exchange (80.70%) and the Shenzhen Stock Exchange (19.30%) [1] Group 3 - The index is heavily weighted towards the industrial sector, which accounts for 93.30% of the holdings, while materials and information technology make up 3.84% and 2.86%, respectively [1] - The index sample is adjusted semi-annually, with changes implemented on the next trading day following the second Friday of June and December [2] - The sample adjustment typically does not exceed 20% of the total sample, and weight factors are adjusted accordingly [2]