Group 1 - The Shanghai High-end Equipment Manufacturing 60 Index decreased by 1.22%, closing at 8009.43 points with a trading volume of 31.715 billion yuan [1] - Over the past month, the index has increased by 0.53%, but it has decreased by 11.12% over the last three months and by 7.02% year-to-date [1] - The index consists of 60 high-end equipment manufacturing stocks listed on the Shanghai Stock Exchange, reflecting the overall performance of this sector [1] Group 2 - The top ten weighted stocks in the index include: Zhaoyi Innovation (2.54%), Weir Shares (2.39%), Hengli Hydraulic (2.21%), Cambricon (2.21%), Shengyi Technology (2.17%), Jianghuai Automobile (2.12%), Dongfang Electric (2.1%), Sany Heavy Industry (2.02%), Lattice Semiconductor (2.01%), and Fuyao Glass (1.94%) [1] - The index is fully composed of stocks from the Shanghai Stock Exchange, with an industry composition of 53.25% in industrials, 33.41% in information technology, 11.82% in consumer discretionary, and 1.52% in communication services [1] Group 3 - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December [2] - Each adjustment typically does not exceed 10% of the sample, and weight factors are adjusted accordingly [2] - Special circumstances may lead to temporary adjustments, such as delisting or corporate actions like mergers and acquisitions [2]