Molson Coors is a Canadian-American multinational drink and brewing company headquartered in Chicago, Illinois, with main offices in Golden, Colorado, and Montreal, Quebec. Molson Coors was formed in 2005 through the merger of Molson of Canada, and Coors of the United States. In 2016, Molson Coors acquired Miller Brewing Company for approximately US$12 billion. The agreement made Molson Coors the world's third largest brewer. Molson Coors is a publicly traded company on both the New York Stock Exchange and Toronto Stock Exchange. Molson Coors has been a constituent of the S&P500 since 2005. Wikipedia