Zhongji Innolight Shares Fall in Hong Kong Trading Debut

By Sherry Qin

Zhongji Innolight made a lackluster debut after completing Hong Kong's largest listing since 2019, as investors calibrate their confidence in artificial-intelligence stocks.

Shares of the optical transceiver maker declined 5.9% from their listing price to 922.00 Hong Kong dollars early Thursday, even after the Chinese company set the final offer price below the maximum.

Zhongji Innolight's Hong Kong debut came after global tech stocks have tumbled in recent sessions amid mounting fears about Big Tech's surging AI spending. The company's Shenzhen-listed shares have plunged 20% so far this week.

Still, the Shandong-based company raised HK$53.41 billion in gross proceeds, equivalent to US$6.81 billion, making it the largest listing in the city since Alibaba's 2019 debut and Asia's second-largest this year, trailing only Chinese memory maker CXMT's Shanghai listing earlier this week.

Zhongji Innolight is the result of a 2017 merger between Suzhou Innolight Technology, an optical module maker that was seeking new funding, and Shandong-based Zhongji Equipment, a washing machine motor maker with low margins.

Optical transceivers play an increasingly important role in AI data centers, as they serve as the interface between electrical signals and optical signals, enabling data to travel over fiber-optic cables between servers with minimal latency amid surging computing demand.

"Even the fastest chips are useless if data cannot move quickly between them--that's where optical and networking gear comes in," Macquarie analysts said in a recent note.

Innolight has ridden the AI tailwind as every AI cluster needs thousands--or even hundreds of thousands--of optical transceivers.

Its revenue in the first three months of 2026 almost tripled to 19.50 billion yuan, equivalent to US$2.88 billion, while net profit almost quadrupled to 6.32 billion yuan.

Unlike AI accelerators, China's optical and networking stack doesn't face a tech bottleneck. Innolight has been the largest provider of optical interconnect solutions by revenue for five consecutive years since 2021, accounting for over one fifth of the overall market in 2025, it said in the prospectus.

Over 60% of its revenue in the first quarter of 2026 came from the U.S., where advanced AI infrastructure is concentrated, compared with less than 4% from China during the period.

Innolight is a key supplier to global customers such as Google and Nvidia, supported by its cost advantage and rapid product cycles.

The heavy overseas revenue contribution makes geopolitical risks and trade tensions an overhang after its inclusion in the U.S. Defense Department's list of Chinese military-linked companies earlier this year. Although Innolight has said it doesn't restrict its business with U.S. customers, the company has aggressively expanded its offshore manufacturing footprint, including a major Thailand manufacturing site to mitigate manufacturing risks.

As a leader in pluggable modules, Innolight is also making headway into co-packaged optics, the next-generation optical technology which places high-speed optical connections directly inside switching hardware, replacing traditional pluggable transceivers to deliver faster data throughput and lower power use.

Write to Sherry Qin at sherry.qin@wsj.com

(END) Dow Jones Newswires

July 29, 2026 23:09 ET (03:09 GMT)