The Effects of Monetary Policy on Stock Market Bubbles: Some Evidence

38 Pages Posted: 19 Mar 2014

See all articles by Jordi Galí

Jordi Galí

Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Massachusetts Institute of Technology (MIT) - Department of Economics; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Luca Gambetti

Universitat Autonoma de Barcelona

Multiple version iconThere are 2 versions of this paper

Date Written: March 2014

Abstract

We estimate the response of stock prices to exogenous monetary policy shocks using a vector-autoregressive model with time-varying parameters. Our evidence points to protracted episodes in which, after a short-run decline, stock prices increase persistently in response to an exogenous tightening of monetary policy. That response is clearly at odds with the "conventional" view on the effects of monetary policy on bubbles, as well as with the predictions of bubbleless models. We also argue that it is unlikely that such evidence be accounted for by an endogenous response of the equity premium to the monetary policy shocks.

Suggested Citation

Gali, Jordi and Gambetti, Luca, The Effects of Monetary Policy on Stock Market Bubbles: Some Evidence (March 2014). NBER Working Paper No. w19981. Available at SSRN: https://ssrn.com/abstract=2411283

Jordi Gali (Contact Author)

Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI) ( email )

Ramon Trias Fargas, 25-27
Barcelona, 08005
Spain
+34 93 542 2754 (Phone)
+34 93 542 1746 (Fax)

HOME PAGE: http://www.econ.upf.es/~gali

Massachusetts Institute of Technology (MIT) - Department of Economics ( email )

50 Memorial Drive
Cambridge, MA 02142
United States

Centre for Economic Policy Research (CEPR)

London
United Kingdom

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Luca Gambetti

Universitat Autonoma de Barcelona ( email )

Plaça Cívica
Cerdañola del Valles
Barcelona, Barcelona 08193
Spain

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