The Capital Asset Pricing Model (CAPM) has far-reaching practical implications for both investors and corporate managers. The model implies that the market portfolio is mean variance efficient, and thus advocates passive investment. It also provides the most widely used measure of risk, beta,...

The home bias is typically explained by various extra costs for foreign investments, such as higher transaction costs and information asymmetries. These costs have dramatically decreased over the last 15 years: the internet has revolutionized the global flow of information, accounting reports...

Modigliani and Miller's Proposition III asserts that if a firm's projects are all similar, they should all be discounted at the same marginal cost of capital (MCC), which is also the firm's average cost of capital (ACC). However, when a firm expands by accepting a new project, its weight in...