Techniques of regulated Brownian motion are used to analyze the behavior of the exchange rate when official policy reaction functions are subject to future stochastic changes. We examine exchange-rate dynamics in alternative cases where the authorities promise (i) to confine a floating rate...

Several puzzling aspects of the behavior of United States stock prices can be explained by the presence of a specific type of rational bubble that depends exclusively on dividends. We call such bubbles quot;intrinsicquot; bubbles because they derive all of their variability from exogenous...