Group 1 - The Shanghai Information Technology Dividend Index (H50028) opened lower but closed higher, increasing by 0.24% to 21,248.58 points, with a trading volume of 5.219 billion yuan [1] - Over the past month, the Shanghai Information Technology Dividend Index has decreased by 1.29%, down 9.10% over the last three months, and down 2.63% year-to-date [1] - The index consists of eleven primary industry dividend indices, calculated using a dividend yield-weighted method to reflect the dividend levels of various industries, with a base date of December 30, 2005, set at 1,000.0 points [1] Group 2 - The top ten holdings of the Shanghai Information Technology Dividend Index include: Great Wall Technology (9.01%), Shengyi Technology (6.75%), Industrial Fulian (6.37%), Shiyun Circuit (5.37%), Ruile New Materials (5.09%), Jingwang Electronics (4.59%), Fuliwang (4.17%), Furong Technology (4.03%), Huaxu Electronics (4.0%), and Transsion Holdings (3.85%) [1] - The index's holdings are entirely composed of stocks listed on the Shanghai Stock Exchange, with a 100% allocation to the information technology sector [1] Group 3 - The index sample is adjusted annually, with changes implemented on the next trading day after the second Friday of December [2] - A buffer zone is set for dividend conditions, allowing original samples with a cash dividend yield greater than 0.5% over the past year to be exempt from certain requirements [2] - The adjustment ratio is generally limited to 20% unless significant changes occur in the industry or if more than 20% of original samples are removed due to a cash dividend yield below 0.5% [2]