(International Business) Foreign currency exchange (Fx) markets What is the impact of the fact that at least one of the foreign currency exchange (Fx) markets is open at every hour of the day? Solution The foreign currency exchange (Fx) markets is a decentralized market where trading of the different foreign currencies take place 24-hours of a day through over-the-counter (OTC) market at different parts of the world. The impact of this process is followings –.