The Toronto Stock Exchange began operating in 1861.
The exchange developed from Toronto’s growing commercial economy and became a central marketplace for Canadian securities. Its early operations helped connect investors with companies seeking capital in a rapidly expanding country. Over time, mining, energy, banking, and industrial businesses became especially prominent on the Canadian market.
The Toronto Stock Exchange is commonly abbreviated as TSX. It is owned by TMX Group, which also operates the TSX Venture Exchange and other Canadian market infrastructure. The TSX should not be confused with the TSX Venture Exchange, which serves many smaller and earlier-stage companies.