MDC Partners Inc. (NASDAQ: MDCA) is an advertising and marketing holding company based in New York City. MDC is structured as a partnership model, in which it initially acquires a majority stake in its partner agency, leaving a percentage of ownership with the founder. It has more than 50 partner firms worldwide. MDC Partners was founded as Multi Discipline Communications in 1980 in Toronto by Miles Nadal. The company held an IPO on October 16, 1987. The company operated two divisions in the 1990s: Marketing and Communications and Secure Transaction Products, which included the production of checks, credit and debit cards, tickets, and stamps. Toward the end of the 1990s, MDC concentrated on growing its marketing and communications business. It continued to expand into the United States, surpassing CAD$1 billion in revenue in 2000 through acquisitions and organic growth.