This paper summarizes our earlier research documenting the characteristic speculative dynamics of many asset markets and suggests a framework for understanding them. Our model incorporates quot;feedback traders,quot; traders whose demand is based on the history of past returns rather than the...

We propose a dynamic heterogeneous agents model which generates testable hypotheses about the formation, timing and bursting of asset price bubbles in the presence of short-sale constraints, given a calibration that is consistent with momentum and reversal effects for unconstrained assets....

We study the impact of model disagreement on the dynamics of asset prices, return volatility, and trade in the market. In our continuous-time framework, two investors have homogeneous preferences and equal access to information, but disagree about the length of the business cycle. We show that...