The HK50, also known as the Hang Seng Index (HSI), is the main stock market index for the Hong Kong Stock Exchange (HKEX). It tracks the performance of the largest and most liquid companies listed on the HKEX. The index is a market capitalization-weighted index and includes companies from a variety of industries, including finance, property development, and telecommunications.
On the other hand, the HKHI (Hong Kong Hang Seng China Enterprises Index) tracks the performance of the largest Chinese companies listed on the HKEX, including companies in the financial, energy, and telecommunications sectors.