The gains come despite U.S. investors being unable to buy the stock after the U.S. Treasury added SenseTime to a list of "Chinese military-industrial complex companies" accusing it of having developed a facial recognition programme to determine ethnicity, with a focus on identifying ethnic Uyghurs.

SenseTime raised $740 million in its initial public offering (IPO), the fifth largest in Hong Kong in 2021 according to Dealogic data.

(Reporting by Alun John and Donny Kwok; Editing by Himani Sarkar)