The Toronto-Dominion Bank and its subsidiaries are collectively known as TD Bank Financial Group. TD Bank Financial Group is the sixth largest bank in North America by branches and serves more than 18 million customers in four key businesses operating in a number of locations in key financial centres around the globe: Canadian Personal and Commercial Banking, including TD Canada Trust and TD Insurance; Wealth Management, including TD Waterhouse and an investment in TD Ameritrade; U.S. Personal and Commercial Banking, including TD Bank, America's Most Convenient Bank; and Wholesale Banking, including TD Securities. TD Bank Financial Group also ranks among the world's leading online financial services firms, with more than 6 million online customers. TD Bank Financial Group had CDN$557 billion in assets on October 31, 2009.