China's top securities regulator has put investors on notice: stop using artificial intelligence themes as an excuse to inflate stock prices.

According to CNBC, the China Securities Regulatory Commission warned against speculating on "tech hype" and against using AI tools for stock picking. The regulator said authorities will crack down on market behavior that, in CNBC's words, "rides the coattails of technology themes to hype stock prices."

The message is essentially a caution against a familiar pattern in markets: when a buzzy technology captures public attention, share prices for anything associated with it can surge far beyond what the underlying business justifies. Chinese officials appear concerned that AI has become exactly that kind of magnet for speculative trading.

The warning, reported by CNBC on June 17, also takes aim at the growing practice of relying on AI software to choose investments — a sign regulators are watching not just what investors buy, but how they decide.

Why it matters: China's regulators are signaling they will intervene to cool speculation tied to the AI boom, a stance that could ripple through one of the world's largest stock markets and offers an early look at how governments may try to rein in hype as AI reshapes investing.