Mainland money is re-rating Hong Kong's AI assets. On October 26, the Hang Seng Index closed up 0.51%, yet southbound funds sold a net 2.075 billion HKD of Hong Kong equities overall — and within that outflow, Zhipu AI absorbed 431 million HKD of net buying, the largest single net inflow among the day's top-ten Stock Connect trades.
Selling the Index, Buying AI
The day's flow structure speaks clearly: the selling side was concentrated in heavyweight names such as Alibaba, CNOOC, and SMIC, while the buying side was exclusively AI-related — Zhipu (431 million HKD), Baidu (265 million), and UBTech (141 million), mapping to large models, AI applications, and embodied robotics respectively.
"Sell the weights, buy the AI" typically appears when the broad market lacks momentum but capital still wants concentrated exposure to high-conviction growth lines. Large-model companies listed in Hong Kong recently tend to have limited float, giving marginal flows outsized pricing power — a single day of 400-million-HKD-class buying is enough to move the price visibly.
Zhipu: A Scarce Pure-Play on LLM Commercialization
Zhipu is among the first of China's leading LLM developers to list in Hong Kong. The buying interest lands against the backdrop of accelerating commercialization: enterprise API and agent application revenue curves are taking shape, and the market's valuation logic for model companies is shifting from narrative to financials.
What to watch is persistence. A one-day surge can be event-driven; if southbound net buying of AI names holds for consecutive weeks, it would signal that mainland institutions have upgraded AI from a trading position to a medium-term allocation.