The Argus Corporation was an investment holding company based in Toronto, Ontario. During the 1960s and 1970s, it was the most powerful and best known conglomerate in Canada, at one time controlling the companies making up 10 percent of all shares traded daily on the Toronto Stock Exchange. At its height in the 1970s, it was a true conglomerate with many unrelated businesses. Among these were Dominion grocery stores, Orange Crush soft drinks, Massey Ferguson farm machinery, Domtar wood products and Carling O'Keefe breweries.