Zhongji Innolight, a leading Chinese producer of optical transceivers used in AI data centres, experienced a share price decline of up to 3% following its debut on the Hong Kong stock market on Thursday, July 30, 2026. By 9:33 a.m., shares had dropped 2.86% to HK$953.

The company had earlier completed Hong Kong’s biggest initial public offering (IPO) of the year, raising HK$53.4 billion (US$6.8 billion) with a market capitalisation exceeding HK$1 trillion. The IPO was priced at HK$980 per share, below the upper marketing limit of HK$1,010.

This listing coincided with a global sell-off of AI-related stocks, which affected Zhongji Innolight’s performance. In Shenzhen, the company’s share price had declined 16% since the launch of its H-share public offering, closing at 951 yuan per share as of Wednesday, July 29, 2026. This movement narrowed the discount between its new H shares and existing A shares from 20% to 11%.

In the days leading up to its Hong Kong debut, Zhongji Innolight announced an A-share buy-back plan valued at up to 8 billion yuan (US$1.2 billion), seemingly to mitigate a potentially unstable start to trading in the city.

The company’s debut and subsequent share price movement reflect the broader global downturn in investor sentiment toward the artificial intelligence sector.

Sources