Group 1 - The core index, the China Securities Hong Kong Mainland Stock 50 Index, experienced a decline of 0.26% to 3002.62 points, with a trading volume of 103.38 billion yuan on August 14 [1] - Over the past month, the index has increased by 5.59%, by 7.99% over the last three months, and has risen by 24.33% year-to-date [1] - The index is designed to reflect the overall performance of Chinese concept securities listed on global exchanges, with a base date of December 31, 2004, and a base point of 1000.0 [1] Group 2 - The top ten weighted stocks in the index include Tencent Holdings (10.93%), Alibaba-W (9.96%), Xiaomi Group-W (7.11%), and others, with a total market share of these stocks contributing significantly to the index [1] - The index's holdings are entirely composed of stocks listed on the Hong Kong Stock Exchange, indicating a focused investment strategy [1] Group 3 - The industry composition of the index shows that consumer discretionary accounts for 31.60%, communication services for 21.93%, and financials for 21.62%, among other sectors [2] - The index undergoes adjustments every six months, with sample adjustments occurring on the second Friday of June and December, allowing for a maximum sample change of 10% [3] - A buffer zone is established for the index adjustments, prioritizing new samples ranked in the top 40 and retaining old samples ranked in the top 60 [3]