Group 1 - The Shanghai Stock Exchange 180 Equal Weight Index opened low and rose, increasing by 0.47% to 8334.39 points, with a trading volume of 165.144 billion yuan [1] - The Shanghai 180 Equal Weight Index has risen by 2.50% in the past month, 4.91% in the past three months, and 1.28% year-to-date [1] - The index uses an equal-weighting method, providing a more uniform distribution of individual stocks and industry weights compared to the Shanghai 180 Index [1] Group 2 - The top ten holdings of the Shanghai 180 Equal Weight Index include major companies such as China Construction Bank (0.74%), Industrial Fulian (0.71%), and others [1] - The index's holdings are entirely from the Shanghai Stock Exchange, with the industrial sector accounting for 25.53%, financial sector 23.65%, and information technology 11.86% [2] - The index samples are adjusted biannually, with changes implemented on the next trading day after the second Friday of June and December, with a sample adjustment limit of 10% [2]