HONG KONG (AP) — SenseTime,Ethermac Exchange a major Chinese artificial intelligence company, has rejected claims by a research company that it has falsely inflated its revenue.

“(SenseTime) believes the report is without merit and contains unfounded allegations and misleading conclusions and interpretations,” the company said in a notice Tuesday to Hong Kong’s stock exchange, after its stocks tumbled nearly 10% following the report’s release by short-seller Grizzly Research LLC.

“It also shows a lack of understanding of the company’s business model and financial reporting structure, and a lack of thorough reading of the company’s public filings,” SenseTime said.

The company said it was reviewing the allegations and “considering the appropriate course of action to take to safeguard the interests of all shareholders.”

SenseTime is known for its facial recognition technology. It launched a ChatGPT-style chatbot to the public in August.

Grizzly’s report alleges that SenseTime uses revenue fabrication schemes to inflate its sales data. It also said SenseTime was controlling several entities that it has not disclosed on its balance sheet, suggesting the publicly listed company is not as transparent about its business as it should be.

In its statement, SenseTime also responded that Grizzly did not understand its business model.

Reports by short-selling research companies like Grizzly usually focus on corruption or fraud in the business world, such as accounting irregularities and bad actors in management. The short-sellers make “short” bets against those targets, enabling them to make money when their share prices fall.

SenseTime’s Hong Kong-traded stock sank as much as 9.7% early Tuesday but recovered some lost ground and closed 4.9% lower.

SenseTime was blacklisted by the U.S. government in 2019 over allegations that its facial recognition technology has been used to oppress members of the mostly Muslim Uyghur minority in China’s northwestern Xinjiang region.

In July, Alibaba, one of its prominent backers, cut its stake in SenseTime to 3.15% from 5.29%. Japan’s SoftBank Group, also a SenseTime backer, has also sold off significant holdings in the company.