The term Toronto Stock Exchange (TSX) refers to a Canadian stock exchange located in Toronto, Ontario. Founded in 1861, the TSX is Canada’s premier stock exchange with more than 1,500 listed companies, including those from the energy, mining, technology, and real estate sectors. The exchange is also home to international listings and exchange-traded products. It became fully electronic after closing its trading floor in 1997. In 2007, the TSX merged with the Montreal Exchange (MX) to form the TMX Group.