Baidu just unlocked a massive new pool of potential buyers. The Chinese tech giant’s Hong Kong-listed Class A ordinary shares (HKEX: 9888) were officially included in both the Shanghai-Hong Kong and Shenzhen-Hong Kong Stock Connect programs on September 7, 2026, giving mainland Chinese investors direct access to trade the stock through southbound channels.
The move follows Baidu’s conversion from a secondary listing to a dual-primary listing on the Hong Kong Stock Exchange in August 2026. That upgrade was the prerequisite for Stock Connect eligibility, and now it’s paying off in the form of a dramatically wider investor base.
Why Stock Connect matters for Baidu
Stock Connect is the plumbing that lets mainland Chinese investors buy Hong Kong-listed shares and vice versa. The programs were launched in 2014 and 2016, creating a bridge for mutual market access between mainland China and Hong Kong, with specific quotas in place for southbound trading.
Historical data from comparable Chinese tech firms that entered Stock Connect after dual-primary listing conversions shows a 15-20% average increase in southbound shareholding within 30 days of inclusion.
Baidu’s first trading day under the new arrangement produced a mixed result, with early gains fading as broader market conditions weighed on sentiment.
For context, Alibaba received similar southbound trading access back in September 2024.
The AI angle
Baidu’s Ernie large language model ecosystem has become one of the most prominent AI platforms in China, competing with Alibaba’s Qwen models for enterprise and consumer adoption. Baidu has also been developing its Kunlunxin chip technology, an effort to reduce reliance on foreign semiconductors as US export controls continue to reshape the global chip supply chain. Baidu’s cloud business serves as the commercial distribution layer for its AI models. The combination of proprietary models, custom silicon, and cloud infrastructure gives Baidu a vertically integrated AI stack.
Baidu vs. Alibaba: different bets on the same theme
Alibaba’s AI strategy centers on the Qwen model family and its cloud infrastructure business, which benefits from a built-in customer base of merchants and enterprises across its commerce ecosystem. Baidu’s edge lies in its deeper roots in search and natural language processing, which gave it an early start on large language models.
Analysts note that Stock Connect inclusion, while positive for liquidity, does not fundamentally alter earnings projections for Baidu or its financial competitive stance against peers.
The competitive dynamics between the two companies extend beyond AI into autonomous driving, where Baidu’s Apollo platform has been a pioneer in China, and into enterprise services, where Alibaba’s ecosystem advantages remain formidable.
What’s worth watching in the near term is whether Baidu’s southbound inflows match the 15-20% historical average seen by comparable firms.