James O. McKinsey
Co-founder 1926Background
James O. McKinsey was a pioneering accounting professor at the University of Chicago who believed that the principles of rigorous, quantitative analysis could be applied to the broader management of the enterprise, not just financial ledgers.
Role at McKinsey & Company
McKinsey & Company possesses an intellectual, institutional founding story, rooted in the corporate explosion of the 1920s and defined by an ambitious accounting professor who invented the modern concept of 'management consulting.' The firm was founded in 1926 in Chicago by James O. McKinsey. McKinsey was not a traditional industrialist; he was a respected, analytical professor of accounting at the University of Chicago. During the 1920s, American corporations were growing large and complex. McKinsey observed a fundamental flaw: accountants only told management what had already happened in the past, focused purely on historical ledgers. McKinsey possessed a 'eureka' moment. He theorized the concept of 'Management Engineering.' He believed trained outside experts could analyze a corporation's entire structure, operations, and complex strategy to heavily advise the CEO on how to plan for the future. He founded his firm specifically to execute this novel concept. However, the true foundational architect of the modern 'Firm' was Marvin Bower, who joined in 1933. Following James McKinsey's premature death in 1937, Bower took control. Bower was a strict, formal Harvard lawyer. He eradicated the term 'engineering' and insisted they were a prestigious 'profession' (exactly like an elite law firm). Bower instituted strict rules: consultants must wear formal suits, they must only interact directly with CEOs, and they must never advertise. By institutionalizing this rigorous, elite ethos, Marvin Bower transformed a small Chicago accounting experiment into the most powerful, secretive advisory firm in the history of global capitalism.