As a forex trader, it is important to know which are the biggest forex brokers in the market. This is because these brokers can provide you with the best possible trading conditions and terms. With their large capital reserves and advanced trading platforms, they can offer you tight spreads and fast executions. Furthermore, they usually have a robust customer support team that can help you with any enquiries or problems you may have.There are many ways to measure the size of a forex broker. One common way is to look at the average daily trading volume (ADTV) of the broker. The ADTV is a measure of how much currency is traded through the broker on an average day. The higher the ADTV, the bigger the broker.Another way to measure the size of a forex broker is by looking at its customer base. A large customer base typically indicates that a broker is well-established and has a good reputation. Finally, you can also look at the financial statements of a broker to get an idea of its size.The three largest forex brokers in the world are CME Group, Deutsche Bank AG, and Thomson Reuters Corp. CME Group is the largest futures exchange in the world, while Deutsche Bank AG is one of the largest banks in Europe. Thomson Reuters Corp provides data and news services to financial institutions around the world.