Hong Kong's securities regulator advised investors and shareholders to "exercise extreme caution" when dealing with the shares of Aceso Life Science Group (HKG:0474), as the high concentration of shareholding in the company to a small number of stockholders could result in volatile share prices.

The watchdog said that following an investigation, its findings suggested that 20 shareholders held 1.39 billion shares in the construction machinery seller, representing 18.79% of its total issued shares as of Dec. 31, 2025.

Coupled with the 71.94% stake owned by three shareholders, they cornered 90.73% of Aceso Life Science, the regulator said, whose report was disclosed by the company itself late Tuesday.

As a result, other shareholders only held 684.2 million shares, or a 9.27% stake in the company, the regulator said.