Forex is the most liquid market in the world because there is a large number of buyers and sellers looking to make a trade at any given time. Each day, over $6 trillion dollars of currency is converted by individuals, companies and banks, which is roughly twice the annual British gross domestic product (GDP).
Forex’s high liquidity means that transactions can be completed quickly and easily, and that spreads are often very tight – meaning the underlying market price won’t have to make a significant positive move in order for your trade to be profitable.