Baidu Inc.'s Hong Kong-listed Class A ordinary shares, traded under HKEX: 9888, were included in the Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect programs on Sept. 7, 2026. The inclusion allows mainland Chinese investors to buy and sell Baidu shares through southbound trading channels, expanding the company's potential investor base after its conversion from a secondary to a dual-primary Hong Kong listing in August. Baidu's first trading day under the arrangement saw initial gains fade amid wider market pressure. The company is developing an integrated artificial-intelligence business spanning its Ernie large language model ecosystem, Kunlunxin chips and cloud operations, while competing with Alibaba in AI, autonomous driving and enterprise services. Historical data cited for comparable companies indicates southbound ownership rose 15% to 20% on average within 30 days of Stock Connect inclusion, though analysts say access alone does not change Baidu's earnings outlook or competitive financial position.