Chinese regulators are investigating recent stock rallies driven by artificial intelligence optimism. The Shanghai and Shenzhen stock exchanges have asked several listed companies to clarify if their core businesses have substantial links to AI and whether their disclosures are sufficiently transparent [1, 2].
In May 2026, regulators also sent inquiries to managers of exchange-traded funds and other investment funds with heavy AI sector exposure. These requests focused on valuation methods and justification for holdings in AI-related stocks [2]. The regulatory concern centers on a disconnect between soaring valuations and the companies’ underlying earnings, which may pose financial risks [2].
The AI boom propelled the tech-heavy Star 50 Index to record highs in May 2026, sparking fears of market overheating amid rapid price increases [2]. Some stocks have been trading at hundreds or even thousands of times their earnings, raising questions about the sustainability of such valuations. An unnamed mutual fund manager said, "Some stocks have traded at prices hundreds or even thousands times their earnings, but it remains to be seen whether firms can deliver the results to back up these valuations" [2].
Regulators have also noted a proliferation of AI 'meme stocks' that benefit from retail investor enthusiasm despite lacking substantial AI business operations [2]. These trends have caused apprehension over potential bubbles driven by speculative buying rather than solid fundamentals.
The recent regulatory actions aim to clarify the true connection of companies and funds to the AI sector and to assess associated market and valuation risks. The inquiries by stock exchanges and fund regulators mark a step toward greater scrutiny of the AI-related market surge.
