Companies traded on the TSX

See Category:Lists of companies listed on the Toronto Stock Exchange for a complete list.

As of 31 December 2007, the TSX had 3,951 listed companies with a combined market capitalization of $2.2 trillion.^[4]

The exchange is home to all of Canada's Big Five commercial banks, including: CIBC, Bank of Montreal, Bank of Nova Scotia, Royal Bank of Canada and the Toronto-Dominion Bank, making the Exchange the centre for banking in the country. This was seen as being most evident during the proposed mergers of Royal Bank of Canada and Bank of Montreal alongside CIBC and Toronto-Dominion Bank in 1998, which were seen as stopping competition by the then Finance Minister Paul Martin.

The exchange is the primary listing for several energy companies including; Cameco Corporation, Canadian Natural Resources Ltd., Canadian Oil Sands Trust, EnCana Corporation, Husky Energy Inc., Imperial Oil Ltd. and Nexen Inc. all within the top 40 companies listed in on the exchange.