The Hang Seng Index (HSI) is a freefloat-adjusted market-capitalization-weighted stock market index in Hong Kong. It is the main indicator of the overall market performance of the Hong Kong stock exchange, tracking the largest and most liquid companies listed in Hong Kong.
Description: The Hang Seng Index (HSI) was launched on November 24, 1969, and is maintained by Hang Seng Indexes Company Limited. It is composed of the largest and most liquid stocks listed on the Hong Kong Stock Exchange (HKEX). The index covers approximately 65% of the total market capitalization of the HKEX. It serves as a benchmark for fund managers and investors, reflecting the performance of the Hong Kong equity market. The HSI is widely used as a basis for derivatives, ETFs, and other financial products. It is reviewed quarterly to ensure representativeness. The index has a long history of tracking Hong Kong's economic development and is a key indicator for Asian markets.