Hang Seng Index

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Hang Seng live chart

What is Hang Seng?

The Hang Seng Index (abbreviated: HSI, traditional Chinese:) is a free float adjusted market capitalization-weighted stock market index in Hong Kong. It is used to record and monitor the daily changes of the largest companies in the Hong Kong stock market and is the main indicator of the overall market performance in Hong Kong. These 45 companies represent about 67% of the capitalization of the Hong Kong Stock Exchange.

HSI was started on November 24, 1969, and is currently compiled and maintained by HSI Services Limited, which is a wholly-owned subsidiary of Hang Seng Bank, the largest bank registered and listed in Hong Kong in terms of market capitalization. It is responsible for compiling, publishing, and managing the Hang Seng Index and a range of other stock indexes, such as Hang Seng China AH Index Series, Hang Seng China Enterprises Index, Hang Seng China H-Financials Index, Hang Seng Composite Index Series, Hang Seng Freefloat Index Series, and Hang Seng Total Return Index Series.