Its founders, Senator George Albertus Cox and Edward Rogers Wood, were both well known Canadian business figures at the time, having previously formed the National Trust Company together in 1898.
[3] By 1958, the firm had developed a large network of branches including locations in every major Canadian city as well as international offices in New York, Boston, Philadelphia, and London.
The late 1950s saw Dominion Securities fully involved in the trading of securities on the secondary markets as members of The Toronto, Montreal, Winnipeg, and Canadian Stock Exchanges, as well as affiliate members of the American Stock Exchange.
BMO Nesbitt Burns, CIBC Wood Gundy, and McLeod Young Weir, were all rebranded to BMO Capital Markets, CIBC World Markets, and Scotia Capital, respectively, but their bank holding company parent still use the old names as a brand for their full service brokerage under wealth management, plus the old name still remains the broker dealer subsidiary for their investment bank in Canada.
On July 9, 2020, a class action lawsuit was filed by former RBC Dominion Securities employee Leigh Cunningham and others, claiming that the company owes them for unpaid statutory holidays and other vacation days, and seeking damages of $800 million.