Forex (FX) stands for the FOReign EXchange market. It’s the world’s biggest financial market, with a daily volume exceeding $6 trillion daily. Foreign exchange is the simultaneous selling of one currency and the buying of another currency. These currencies are trades through a broker (or a dealer) and are executed in currency pairs (ex: EUR/USD = the euro and the US dollar). This market is three times bigger than the stock and futures markets combined!