Created by professors Paul Johnson and Michael Mauboussin of The Graduate School of Business at Columbia University, CAP@Columbia features resources from Columbia's securities analysis and investment courses. The authors have divided securities analysis into four sections: Capital Market Theory, Business Economics and Competitive Advantage, Valuation, and Rational Decision Making. Within each section, there is a short definition of each term and links leading to related articles written by Johnson and Mauboussin. While some of the reports and articles date as far back as 1997, the site is updated frequently, with new information highlighted on the homepage.