The aim of Forex trading is to make profit with increasing or decreasing currency prices. A trade is place when you expect the value of a specific currency to increase. In a currency pair, when the currency you buy increases, you must sell the other currency to make a profit. An open trade, or open position, this a trade in which you have already bought or sold a currency pair, but have not yet bought back an the same amount. The five most popular currency pairs in Forex at the moment are USD/Yen, Euro/Yen, Pound/USD, Swiss franc/USD, and the Euro/USD.