An over-the-counter market where buyers and sellers conduct foreign exchange transactions. The Forex market is useful because it helps enable trade and transactions between countries, and it also allows an investment opportunity for risk seeking investors who don't mind engaging in speculation. Individuals who trade in the Forex market typically look carefully at a country's economic and political situation, as these factors can influence the direction of its currency. One of the unique aspects of the Forex market is that the volume of trading is so high, partially because the units exchanged are so small. It is estimated that around $4 trillion goes through the Forex market each day. also called foreign exchange market.