The firm grew to become one of the country's largest brokerage houses and provided services including underwriting, stock and bond trading and distributing, leasing, private placements, and mortgage financing.

McLeod Young Weir had international offices in England, France, and the United States and owned seats on the Toronto, Montreal, Vancouver, Alberta, Winnipeg, and Midwest stock exchanges.

[7] In July 1933, the firm changed its name to McLeod, Young & Scott, at which time Reginald Case became associated with the company.

[8] When Scott retired in February 1940, the partners dissolved the firm and formed a new partnership called McLeod, Young, Weir & Ratcliffe.

He came up with the idea for the company's traders to wear jackets made from the yellow tartan of Clan McLeod.

They day the jackets were introduced, the McLeod traders paraded into the stock exchange led by a bagpiper.

Effective 1 June 1987, the Ontario government amended its regulations to allow banks to acquire 100 per cent ownership of investment brokerages.

Rumours began to circulate in September 1987 that the Bank of Nova Scotia was interested in buying McLeod.