SUBJECT AREAS: Asset allocation, Portfolio choice, Financial management, Institutional investments, Investments, Equity investing, Fixed income investing, Pension funds, Mutual funds, Performance EvaluationThis note provides an overview of the main ideas and structure of a 15-session module on long-term asset allocation designed for MBA graduate students and investment professionals. This module is taught as part of a full-length, 30-session elective class on investment management at the Harvard Business School. This module can also be taught as a stand-alone 15-session course on asset allocation. The module is structured around a discussion of three interactive sessions and nine Harvard Business School cases, all of which have companion teaching notes. The module starts with traditional mean-variance analysis and it develops the main ideas underlying the modern theory of long-term investing. The module also emphasizes the practical implementation of investment decisions and the management of long-term institutional investors and investment vehicles