Foreign-exchange reserves are assets held by a central bank or other monetary authority, usually in various reserve currencies, mostly the United States dollar, and to a lesser extent the euro, the pound sterling, and the Japanese yen, and used to back its liabilities—e.g., the local currency issued, and the various bank reserves deposited with the central bank by the government or by financial institutions. In September 2015 Foreign Exchange Reserve by Bangladesh Bank stood US $26379.00 million.
Components: A foreign exchange reserve, also called an anchor currency, is a currency that is held in significant quantities by numerous governments and central banks as part of their foreign exchange reserves. These currencies are used to transact global business, and are the pricing currency for global trade—particularly in commodities such as gold and oil. The primary components of Foreign-exchange reserve currency used worldwide is the US dollar, followed by the euro—the official currency of the euro zone -- the British pound, the Japanese yen, and the Swiss franc