Hang Seng falls 1.3% to 24,481.86 despite weekly gain of 5.1%
Key Facts
The Hang Seng Index closed down 1.3% at 24,481.86 points on Friday, November 6, 2026, as a sell-off in AI stocks spread from the United States to Asian markets. At the same time, the index ended the week up 5.1%, its strongest weekly performance since March 2025, according to Radio Television Hong Kong. That puts the latest session's losses against an otherwise strong week, after shares linked to AI infrastructure fell. Trading turnover in Hong Kong reached 247.43 billion Hong Kong dollars during the session. Other Chinese indexes and stocks also came under varying degrees of pressure, while the week's gains remained clear in the technology index.
Pressure was heavier on the Hang Seng Tech Index, which fell 1.8% to 4,078 points on November 6. Despite its daily decline, the index recorded a weekly gain of 8.6%, its best since February 2025. The weekly result shows that the sell-off session did not erase gains from previous days, but redirected attention to volatility in technology stocks as US pressures widened. In Hong Kong, the China Enterprises Index fell 1.1% to 8,274 points. The main indexes therefore fell in tandem even as both the broad and technology indexes posted positive weekly performances, with the latter ending the session with a larger decline.
Chinese companies that make data center equipment were among the hardest-hit stocks. Zhongji Innolight fell 9.2% to its lowest level in a year as of November 6. Eoptolink Technology, a competitor in optical transceivers for data centers, also fell 7.3%. Radio Television Hong Kong links both companies to this equipment, putting their declines at the center of pressure on AI infrastructure stocks. The same coverage did not confirm specific pressure on memory-chip suppliers, so the documented examples in the session were concentrated in optical equipment companies.
More broadly, the Associated Press linked weakness in Asian markets to a broad sell-off in technology stocks on Wall Street, particularly those tied to AI. The agency pointed to concerns over the prices, borrowing and spending required to expand computing capacity and build data centers. Reuters reported that the cost of data centers and infrastructure could limit future returns, concerns weighing on trading in sector stocks. The Associated Press also reported that Democrats' midterm election victories increased the likelihood of tighter oversight of AI, including at the state level. These regulatory concerns add to questions about the scale of spending required and the returns companies can generate from their investments.
On the dynamics behind the sell-off, fund manager James Athey said retail investors' and hedge funds' selling "was feeding on itself." The comment describes an interaction between two investor groups amid the sharp decline in US technology stocks, according to a statement carried by Reuters via Euronext. This comes as concerns have widened over the cost of AI infrastructure and the possibility that those costs could limit future returns. In Hong Kong, the pressure was concentrated in technology stocks and companies linked to data center equipment, alongside declines in the technology and broad indexes during the session.
In China, the Shanghai Composite Index ended the week through November 6 up 1.39%, ending a six-week run of weekly losses, according to Trading Economics data. That presents a different picture from Hong Kong's daily moves: China's weekly performance remained positive despite the sell-off that weighed on AI stocks in the region. Looking ahead, Athey said the coming period would be "a big test of market sentiment and faith in AI." The description reflects investors' continued focus on whether the sector can justify the costs of data centers and infrastructure, as regulatory and spending concerns remain in the background of trading.