Chinese mainland optics firm Zhongji Innolight Co has confidentially filed for a Hong Kong Special Administrative Region listing, according to people familiar with the development, in what could be one of the city’s biggest maiden share sales this year.

Innolight — a supplier of Nvidia Corp — is already listed in Shenzhen, where its shares have climbed about sixfold in a year as investors flock to artificial intelligence and businesses that feed it. The maker of high-speed optical transceivers said Monday its 2025 net income doubled to 10.8 billion yuan ($1.6 billion).

ALSO READ: HK bourse mulls micro futures on Hang Seng, tech index

People familiar with the matter have said previously that Innolight aims to raise at least $3 billion in a Hong Kong listing.

Deliberations are ongoing, and details such as the size and timing of the share sale aren’t finalized, the people said, asking not to be identified because the deliberations are private.

A representative for Innolight didn’t respond to a request seeking comment.

READ MORE: Hong Kong-listed tech stocks showing fresh signs of growth

Innolight joins several other companies in filing Hong Kong listing paperwork confidentially, a route that helps them avoid disclosing trade secrets prematurely. Details are made public after regulators approve listings.

The Hong Kong exchange has started consultations on potentially expanding the confidential-filing option, which is currently only available to certain secondary-listing applicants and those in the biotechnology and specialist-tech sectors.