Monetary policy and rational asset price bubbles

I examine the impact of alternative monetary policy rules on a rational asset price bubble, through the lens of an overlapping generations model with nominal rigidities. A systematic increase in interest rates in response to a growing bubble is shown to enhance the fluctuations in the latter, throug...

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Bibliographic Details
Author: Galí, Jordi, 1961-
Format: article
Status:Versión aceptada para publicación
Publication Date:2014
Country:España
Institution:Universitat Pompeu Fabra
Repository:Repositorio Digital de la UPF
OAI Identifier:oai:repositori.upf.edu:10230/26013
Online Access:http://hdl.handle.net/10230/26013
http://dx.doi.org/10.1257/aer.104.3.721
Access Level:Open access
Keyword:Monetary policy rules
Stabilization policies
Asset price volatility
Description
Summary:I examine the impact of alternative monetary policy rules on a rational asset price bubble, through the lens of an overlapping generations model with nominal rigidities. A systematic increase in interest rates in response to a growing bubble is shown to enhance the fluctuations in the latter, through its positive effect on bubble growth. The optimal monetary policy seeks to strike a balance between stabilization of the bubble and stabilization of aggregate demand. The paper’s main findings call into question the theoretical foundations of the case for “leaning against the wind” monetary policies. (JEL E13, E32, E44, E52, G12)