The Hang Seng is a major stock market index which tracks the performance of around 50 largest companies listed in the Stock Exchange of Hong Kong. It is free floating, capitalization-weighted index. The Hang Seng has a base value of 100 as of June 30, 1964. This page provides - Hong Kong Stock Market (HSI) - actual values, historical data, forecast, chart, statistics, economic calendar and news. Hong Kong Stock Market (HSI) - actual data, historical chart and calendar of releases - was last updated on September of 2018.