Client Service Insights & Publications About Us Alumni Careers Global Locations Register Log in About Us Overview Our people History Our values When James O. McKinsey founded McKinsey in 1926, he could not have imagined the reach his small firm would eventually have. Eighty-seven years later, the firm has grown into a global partnership serving two-thirds of the Fortune 1000. 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s 1920s Management theory was still in its infancy when James O. McKinsey (or Mac, as he was known by friends and colleagues) founded the firm that bears his name in 1926. He had left his academic career as a professor of accounting at the University of Chicago to build a firm that provided finance and budgeting services, but quickly gained a reputation for providing advice on organization and management issues. Mac was determined to help senior management in American companies solve their most important business problems. In an era when "management engineers" were largely efficiency experts, Mac set out to enlarge the profession's scope by persuading clients that his young firm could not only help inefficient companies but also assist healthy companies in reorienting themselves to thrive in a turbulent business environment. Contact us Site map Frequently asked questions Local language information Privacy policy Terms of use © 1996-2014 McKinsey & Company