Core Insights - The Hong Kong Stock Connect market is undergoing normalization adjustments, with 67 stocks included and 61 stocks removed as of September 30, 2025, raising concerns about the assessment period and subsequent price volatility of newly listed stocks [1] Group 1: Inclusion Rules - Stocks must achieve a daily average market capitalization covering the top 95% in the Hong Kong market and pass liquidity tests to be included in the Hang Seng Composite Index [2] - The Hang Seng Composite Index categorizes stocks into large, medium, and small caps, with small caps needing an average month-end market capitalization of at least 5 billion HKD for inclusion in the Stock Connect [2] Group 2: Adjustment Timing - Regular adjustments occur at the end of June and December, with qualifying stocks added to the index and Stock Connect in September and March of the following year [3] - A fast-track mechanism allows newly listed companies to be included in the index and Stock Connect if they meet market capitalization and liquidity criteria shortly after listing [3] Group 3: Market Manipulation Concerns - Companies with low market capitalization and small float are targeted for speculation, with two types of funds involved: those colluding with companies for shareholder exits and those speculating based on index inclusion expectations [5] - The cases of Yaojie Ankang and Cao Cao Chuxing exemplify these speculative activities, where stock prices surged due to passive fund inflows and subsequently crashed [5] Group 4: Yaojie Ankang Case Study - Yaojie Ankang, a clinical-stage biopharmaceutical company, raised only 200 million HKD in its IPO, the smallest in the medical sector for 2025, and had a highly concentrated shareholding structure [6] - After being included in the Stock Connect on September 8, 2025, the stock price surged over 200% due to passive fund inflows but later plummeted by 54% in a single day, indicating a lack of fundamental support for the price increase [7][8] Group 5: Cao Cao Chuxing Case Study - Cao Cao Chuxing, a ride-hailing platform, faced weak institutional demand during its IPO, leading to a significant drop in its stock price on the first day [9] - Following its inclusion in the Stock Connect, the stock price initially rose by 143% but then fell sharply, suggesting potential market manipulation as funds sold off after retail investors entered the market [10]
2025年港股通炒作乱象：曹操出行稳市期后遭神秘资金拉涨143% 入通即暴跌 或存资金操纵痕迹