Hang Seng Indexes Company Limited (HSI; Chinese: 恒生指數有限公司) is a private company in Hong Kong and wholly owned by Hang Seng Bank.

The most famous and popular referenced is the Hang Seng Index.

[2] In November, HSI has launched three Stock Connect Hong Kong Indexes.

[3] In January, HSI has launched Hang Seng SCHK New Economy Index.

[4] HSI launched the Hang Seng Tech Index, which tracks companies like Tencent, Meituan Dianping and Xiaomi, on 27 July 2020.