Hong Kong market authorities expanded recognition and investor access for three AI-related companies in September 2026. Baidu Group-W (09888.HK) and DeepSeek Intelligence (02723.HK) met fast-entry requirements for the HKEX Technology 100 Index and were scheduled to join the HKEX Technology and US Technology 100 Index after the September 11 market close, effective September 14. Baidu’s move followed its September 1 conversion from a secondary Hong Kong listing to a dual primary listing on the Hong Kong Stock Exchange and Nasdaq Global Select Market, and its inclusion in both Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect programs effective September 7. Analysts cited in the source estimated up to $6 billion, or about HK$47 billion, in net new southbound flows for Baidu over two to four months. Haiqing Zhiyuan Technology Co., Ltd. (01392.HK) entered the eligible lists for both Stock Connect programs effective September 7 and joined six Hang Seng-related indexes; its shares rose as much as 13.74% on September 8 to HK$26.98. Haiqing’s first-half 2026 large-model service revenue increased 382.5% year-on-year to CNY 320 million, or about $47.7 million, representing 78.8% of total revenue. The developments could increase liquidity, index-related demand and mainland investor participation across the companies, while their AI businesses remain at different stages of commercialization.