Wednesday, 28 October 2026 · Full edition

The Guardian: Chinese stock markets lose trillions amid AI sustainability concerns

What happened

Trillions of dollars have been erased from China's stock markets in recent months. The STAR 50 Index, which tracks innovation companies on the Shanghai exchange, has fallen 40% since June, while other major indices have declined by about 20% over the same period.

Why it matters

The downturn reflects investor anxiety regarding the sustainability of Beijing’s AI sector. Market participants are increasingly wary of a lack of profits and potential geopolitical threats from Western countries, which are placing significant pressure on domestic technology valuations.

Bigger picture

The sell-off underscores the high stakes for Beijing as it races to achieve AI supremacy against the U.S., testing the long-term economic viability and profitability of its state-backed technology initiatives.

Watch next

Monitor upcoming market performance data, potential regulatory responses from Beijing, and further geopolitical developments in the technology race with Western nations.

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