Dollars are not securities, but foreign exchange. Foreign exchange and securities are essentially different. Securities can usually be divided into three categories, namely, stocks, funds and bonds. Securities do not include foreign exchange, these three products of securities are basically traded in China, while foreign exchange is an international spot transaction, which is different. Foreign exchange does not belong to securities.

Dollar (UnitedStatesdollar abbreviation: USD；; ISO42 17 currency code: USD; ; Symbol: USD) is the legal tender of the United States, El Salvador, Panama, Ecuador, East Timor, Marshall Islands, Kiribati and Palau. Dollar banknotes in circulation are all versions of banknotes issued since 1929.