Using an agent-based model (ABM) with fundamentalists and chartists, prone to develop bubbles and crashes, we … demonstrate the usefulness of direct market intervention by a policy maker, documenting strong performance in preventing bubbles … bubbles by forming an expectation of the future return of the risky asset in the form of an exponential moving average of the …

Clientele-based theories explaining asset price bubbles are often difficult to test because the identities of investors …

is able to account for the development of endogenous bubbles and crashes. We distinguish three different regimes …’ opinions are idiosyncratic and no bubbles emerge. Around the critical value of the O(n) vector model, cross sectionally … asynchronous bubbles emerge. Above the critical value, small random price fluctuations may be amplified by noise traders herding …

Galvanized by the claims of Greenwood et al. in Bubbles for Fama that “a sharp price increase of an industry portfolio …, people have not come up with ways of identifying bubbles”, we present significant evidence to the contrary of both statements … price growth qualified by LPPLS: (i) bubbles followed by a large drawdown or crash, and (ii) price catch-up followed by a …