What is the significance of the Toronto Stock Exchange?

The Toronto Stock Exchange (TSX) is Canada's largest stock exchange and the tenth-largest stock exchange in the world by total market capitalisation, with about $4.5 trillion in listed equity. It is owned and operated by TMX Group, a publicly traded company that also owns the TSX Venture Exchange (for smaller emerging companies), the Montreal Exchange (for derivatives), and the Canadian Depository for Securities. The exchange traces its origins to a meeting of 24 brokers at Toronto's Masonic Hall on October 25, 1861.

The TSX hosts more mining and energy listings than any other stock exchange in the world, with about half of the world's publicly listed mining companies by count and a substantial share of oil and gas issuers. Major Canadian blue-chip companies on the TSX include the Big Five banks (Royal Bank of Canada, Toronto-Dominion Bank, Bank of Nova Scotia, Bank of Montreal, CIBC), Canadian National Railway, Canadian Pacific Kansas City, Enbridge, TC Energy, Suncor Energy, Manulife, Sun Life, BCE, Rogers Communications, Telus, and Shopify.

The S&P/TSX Composite Index, introduced in 2002 to replace the older TSE 300, tracks about 230 of the largest TSX-listed companies and is the standard benchmark for Canadian stocks. The narrower S&P/TSX 60 covers the 60 largest. The S&P/TSX Composite is heavily weighted toward financials (about 32 per cent), energy (about 17 per cent), industrials, and materials, reflecting the structure of the Canadian economy.

Canadian securities are regulated by the provincial securities commissions (notably the Ontario Securities Commission, the Autorité des marchés financiers in Quebec, and the British Columbia Securities Commission) coordinated through the Canadian Securities Administrators. Canada is the only G7 country without a national securities regulator. The TMX Group, headquartered at 100 Adelaide Street West in Toronto, is itself listed on the TSX under the ticker X.