By Martin Mou

Hang Seng Indexes Co. will launch the Hang Seng TECH Index on July 27 to track the 30 largest eligible technology companies listed in Hong Kong, the index complier said Monday.

The tech-focused index will have some of the most valuable Chinese Internet companies as its constituents, including Alibaba Group Holding, Tencent Holdings and Meituan Dianping.

The complier of the Hong Kong's benchmark Hang Seng Index said the new index was developed to meet the fast-growing interest in the technology sector and an increasing number of technology companies coming to list in the city.

The index also includes online retailer JD.com Inc., which listed in Hong Kong last month.

Write to Martin Mou at martin.mou@wsj.com