Core Viewpoint - The Hong Kong stock market is undergoing significant adjustments in its major indices, with changes in constituent stocks for the Hang Seng Index and other related indices [2][4][8]. Group 1: Hang Seng Index Adjustments - The Hang Seng Index will increase its constituent stocks from 88 to 90, adding Ningde Times (03750), Luoyang Molybdenum (03993), and Laopu Gold (06181), while removing Zhongsheng Group (00881) [2][4]. - Laopu Gold has shown a strong performance, with a cumulative increase of nearly 20% since the beginning of 2026 [4]. Group 2: Hang Seng China Enterprises Index Changes - The Hang Seng China Enterprises Index will maintain 50 constituent stocks, adding Beike-W (02423) and Horizon Robotics-W (09660), while removing China Resources Beer (00291) and Mengniu Dairy (02319) [6]. Group 3: Hang Seng Composite Index Changes - The Hang Seng Composite Index will add 53 stocks, including East Asia Bank (00023), and remove 28 stocks, increasing its total from 507 to 532 [8]. - The Hang Seng Technology Index will remain unchanged at 30 constituent stocks [8]. Group 4: Market Performance Analysis - Since the beginning of 2026, the Hang Seng Index has risen by 3.65%, while the Hang Seng Technology Index has decreased by 2.82% [10]. - In 2025, both indices saw increases, with the Hang Seng Index up by 27.77% and the Hang Seng Technology Index up by 23.45% [10]. - Among the 88 constituent stocks of the Hang Seng Index, 69 have risen, 18 have fallen, and 1 has remained flat since the end of 2025 [10]. Group 5: Notable Stock Performances - The top performers since the beginning of 2026 include New World Development (41.18%), Techtronic Industries (31.92%), and Pop Mart (31.81%) [11]. - Conversely, the worst performers include Trip.com (-24.22%), Meituan (-20.47%), and NetEase (-13.47%) [11].