Group 1 - The core viewpoint of the article highlights the performance of the China Securities Hong Kong Stock Connect 50 Index, which has seen a decline of 1.93% recently, closing at 3471.17 points with a trading volume of 67.997 billion [1] - The index has increased by 1.01% over the past month, decreased by 4.35% over the last three months, and has risen by 19.37% year-to-date [1] - The index is designed to reflect the overall performance of the largest 50 listed companies within the Hong Kong Stock Connect range, with a base date of November 14, 2014, set at 3000.0 points [1] Group 2 - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December each year [2] - New samples ranked within the top 40 are prioritized for inclusion, while those ranked below 60 are removed, with weight factors adjusted accordingly [2] - Public funds tracking the Hong Kong Stock Connect 50 include various ETFs and fund classes from companies such as Huatai-PB and Guotai, indicating a diverse investment interest in this index [2]

Core Viewpoint - The China Securities Index 50 (CSI 50) index, which reflects the performance of the largest 50 companies eligible for the Hong Kong Stock Connect, has shown significant growth, with a year-to-date increase of 19.87% [1]. Group 1: Index Performance - The CSI Hong Kong Stock Connect 50 index opened lower and fell by 0.73%, closing at 3528.46 points with a trading volume of 79.73 billion yuan [1]. - Over the past month, the CSI Hong Kong Stock Connect 50 index has increased by 11.88%, and over the past three months, it has risen by 5.41% [1]. Group 2: Index Composition and Adjustments - The CSI Hong Kong Stock Connect 50 index is composed of the largest 50 listed companies within the Hong Kong Stock Connect range, established with a base date of November 14, 2014, and a base point of 3000.0 [1]. - The index samples are adjusted biannually, with adjustments occurring on the next trading day after the second Friday of June and December each year [2]. - New samples ranked within the top 40 are prioritized for inclusion, while those ranked below 60 are prioritized for removal [2]. - The index can undergo temporary adjustments in special circumstances, such as when a sample company is delisted or when a new company ranks in the top ten by market capitalization within the Hong Kong Stock Connect range [2].