The Hang Sen40 Index (HSI) is market value-weighted index, compiled of a selection of the largest companies in Hong Kong. It makes up 67% of capitalization in the Hong Kong Stock Exchange. Jan 9, 2026ย ยท HSI | A complete Hang Seng Index index overview by MarketWatch. View stock market news, stock market data and trading information. Apr 9, 2025ย ยท View the full Hang Seng Index (HSI.HK) index overview including the latest stock market news, data and trading information.

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