TD Ameritrade is a discount brokerage firm with a large portion of their customer interactions being made online. TD Ameritrade used to be two separate companies, Ameritrade and TD Waterhouse. Their combination made one of largest brokerage firms in the United States.
Not only is TD Ameritrade one of the largest brokerage firms, they also make the largest number of customer trades on average. The company does offer more than just stocks with options in areas like savings accounts and retirement options. The mobile and online options that was introduced 2010 and 2011 opened their services to a new group of potential investors and increased their overall client accounts to approximately six million.