We develop a parsimonious model of bubbles based on the assumption of imprecisely known market depth. In a speculative … possibility of bubbles depending on the risk-free rate, uncertainty about market depth, and traders’ degree of leverage. This … allows us to discuss several policy measures. Bubbles always reduce aggregate welfare. Among others, certain monetary policy …

We investigate the role played by the anchoring-and-adjustment heuristic in the speculative bubbles dynamics. In order … bring the evidence that large speculative bubbles can only occur when fundamental traders highly anchor to stock market … with slowly mean reverting bubbles lasting many years …