Hang Seng Index (HSI)
The Hang Seng index is a market capitalization weighted index that follows the top 40 or so companies that trade on the Hong Kong Stock Exchange. The index covers over 65% of the total market capitalization of the exchange.The index is maintained and published by the Hang Seng Indexes Company Ltd, a subsidary of the Hang Seng Bank in HK, since 1969. These companies are classified into sub categories namely, Commerce and Industry, Finance, Properties and Utilities. These sub-categories are published as indexes as well.
It is used to record and monitor daily changes of the largest companies of the Hong Kong stock market and is the main indicator of the overall market performance in Hong Kong. These 48 constituent companies represent about 60% of capitalisation of the Hong Kong Stock Exchange.
HSI was started on November 24, 1969, and is currently compiled and maintained by Hang Seng Indexes Company Limited, which is a wholly owned subsidiary of Hang Seng Bank, one of the largest banks registered and listed in Hong Kong in terms of market capitalisation. It is responsible for compiling, publishing and managing the Hang Seng Index and a range of other stock indexes, such as Hang Seng China Enterprises Index, Hang Seng China AH Index Series, Hang Seng China H-Financials Index, Hang Seng Composite Index Series, Hang Seng China A Industry Top Index, Hang Seng Corporate Sustainability Index Series and Hang Seng Total Return Index Series. Hang Seng in turn, despite being a public company, is held in majority by British financial firm HSBC.