There are a few things that you should consider when you are looking for the largest forex brokers. The first is the size of the company. You want to make sure that the company is large enough to handle your account and give you the best possible service. The second is their reputation. Make sure that the company has a good reputation in the industry. The last thing you want to consider is their customer service. Make sure that they have good customer service so that if you have any problems, you can get them resolved quickly.