The Hong Kong Dollar is the official currency of Hong Kong. It is used to facilitate investing and financial transactions in the city. It is widely accepted by global financial markets and is used to purchase stocks, bonds, commodities, and other assets. It is also used in foreign exchange markets to hedge against currency risks. The Hong Kong Dollar is highly liquid, making it a popular choice for investors who need to quickly buy and sell assets. It is also a relatively stable currency, making it a safe haven for investors looking for a safe investment option.