Mainland Chinese investors aggressively purchased Hong Kong-listed equities in June 2026, injecting a net HK$27.1 billion (approximately $3.5 billion ) into the market via the Stock Connect program. This influx represents a sharp reversal from the HK$3.6 billion outflow recorded in May and occurred despite a broader slump in the Hang Seng Index, which fell 9.1 percent during the month — its steepest monthly decline in over two years. The buying patterns reveal a strong preference for technology and artificial intelligence-related companies, highlighting the sector’s enduring appeal to domestic capital even as broader market sentiment deteriorated.
According to the South China Morning Post, Semiconductor Manufacturing International Corporation (SMIC), China’s largest contract chipmaker, attracted HK$12.5 billion in mainland inflows. Zhipu AI, listed under the entity Knowledge Atlas, also saw significant interest, drawing HK$6.6 billion. The top beneficiary overall was Kingboard Holdings, a manufacturer of copper-clad laminates used in printed circuit boards, which recorded HK$20 billion in net buying and saw its shares surge 84 percent. Conversely, Alibaba Group experienced the heaviest selling, with mainland investors offloading a net HK$22.7 billion of the e-commerce giant’s stock.
AI Infrastructure Drives Targeted Investment Decisions
The targeted buying of SMIC, Zhipu AI, and Kingboard Holdings underscores a clear investment thesis: mainland capital is heavily backing the foundational infrastructure of the AI boom. SMIC is critical to China’s efforts to build a self-sufficient semiconductor supply chain, especially as US export controls restrict access to advanced foreign foundries. Zhipu AI represents the software layer, developing large language models that compete globally. Kingboard Holdings, while a traditional manufacturer, supplies essential components for servers and data centers that train and run these massive AI models.
This focus on hardware and foundational models contrasts sharply with the sell-off of Alibaba, suggesting that investors may be rotating capital away from mature consumer internet platforms and toward the companies building the next generation of computing infrastructure. The willingness to deploy billions of dollars into these specific AI-linked equities, even as the broader Hong Kong market suffered its worst month in years, indicates a high degree of conviction in the long-term strategic value of China’s domestic AI ecosystem.
The investment pattern also reflects a broader geopolitical logic. As US-China technology competition intensifies, mainland investors appear to be prioritizing companies that are directly critical to China’s stated goal of technological self-reliance. SMIC and Zhipu AI are both central to this mission — one providing the physical chips, the other providing the software intelligence. Kingboard’s surge, while less obvious, reflects the recognition that AI infrastructure requires vast quantities of basic electronic components, and that domestic suppliers of these components are strategic assets in their own right.
(Related: Cambricon Becomes China’s First Trillion-Yuan AI Chip Stock as Wall Street Initiates Coverage)
H1 2026 Context and the Limits of Southbound Capital
Despite the strong June inflows, the broader picture for the first half of 2026 shows a significant deceleration in cross-border investment. Total mainland buying of Hong Kong stocks reached HK$305.5 billion in H1 2026, a 60 percent decline from the same period a year earlier. Market analysts cited by the SCMP noted that it will be “hard to repeat the massive mainland inflow in 2025,” suggesting that the current investment climate is more selective and cautious.
The concentration of capital into a handful of strategic AI and semiconductor names implies that while overall liquidity may be constrained, high-priority sectors can still attract massive funding. As China continues to prioritize technological self-reliance and AI development, companies positioned at the core of this mandate are likely to remain the primary beneficiaries of southbound capital flows. The June data also raises questions about Alibaba’s long-term trajectory, whose HK$22.7 billion net sell-off suggests that even China’s most globally recognized tech brand is not immune to capital rotation when investors perceive more strategically important alternatives. The pattern of June’s flows may well define the investment playbook for the rest of 2026.
Looking ahead, the near-term outlook for southbound flows will be shaped by two competing forces. On one hand, the upcoming lock-up expirations for Zhipu AI and MiniMax, which together will release over HK$50 billion in shares into the market this week, could absorb significant buying capacity and dampen enthusiasm for the AI sector broadly.
On the other hand, Beijing’s recent signals of expanded policy support for AI, which triggered a 23 percent surge in AI stocks on July 6 and 7, suggest that state backing remains a powerful countervailing force. Mainland investors, who have demonstrated a willingness to buy aggressively into AI-related dips, are likely to remain a stabilizing presence in the Hong Kong market even as the lock-up supply overhang is absorbed.
The June flow data also highlights the growing importance of Hong Kong as a venue for China’s AI capital markets. As US-listed Chinese tech companies face increasing delisting risks and regulatory uncertainty, Hong Kong has emerged as the preferred listing destination for China’s new generation of AI unicorns. The concentration of southbound capital into AI-related equities on the Hong Kong exchange suggests that mainland investors view the city as the primary marketplace for accessing China’s AI growth story. This dynamic is likely to reinforce Hong Kong’s position as a critical node in China’s technology financing ecosystem, even as the broader relationship between the two financial systems continues to evolve.
(Related: China’s AI Funding Fever Shows No Sign of Cooling)