Has China’s AI bubble burst? STAR50 falls 40% as $480 billion is wiped out

The substantial decline in China's AI-related stocks, evidenced by a 40% fall in the STAR50 index, suggests a complex market correction rather than a single cause. While initial investor excitement about AI's potential in areas like models, chips, robotics, and data-centre equipment fueled a rally, the market is now reassessing the sustainability of these high valuations. The STAR50 index trading at around 100 times its trailing earnings, according to Reuters, indicates investors were paying a significant premium based on expectations of future growth, despite this being down from a peak of nearly 250 times.

This market downturn is attributed to several converging pressures. Worries about demand, high valuations, and the possibility of restrictions on Chinese technology exports have contributed to the selloff. The earlier rally was also intensified by AI-related stocks accounting for a substantial portion of China's market capitalization and trading turnover, as reported by Goldman Sachs.

Furthermore, the broader market rally was partly fueled by Beijing’s economic stimulus promises and investor expectations of official support for strategic technology sectors. The current decline also coincides with concerns about tax bills and the possibility of the United States or other countries restricting Chinese equipment used in data centers. This combination of factors points to a multifaceted market adjustment, challenging efforts to build a steadier stock market.