The equity price channel in a New-Keynesian DSGE model with financial frictions and banking

Stellenbosch Working Paper Series No. WP16/2013 (revised, version: 2)
 
Publication date: 2013
 
Author(s):
[protected email address] (Department of Economics, University of Stellenbosch)
[protected email address] (Department of Economics, University of Stellenbosch)
 
Abstract:

This paper studies the role of the equity price channel in business cycle fluctuations, and highlights the equity price channel as a different aspect to general equilibrium models with financial frictions and, as a result, emphasizes the systemic influence of financial markets on the real economy. We develop a canonical New-Keynesian DSGE model with a tractable role for the equity market in banking, entrepreneur and household economic activities. The model is estimated with Bayesian techniques using U.S. data over the sample period 1982Q01 - 2012Q01. We show that a New Keynesian DSGE model with an equity price channel well mimics the U.S. business cycle. The model reproduces the strong procyclicality of the equity market. The equity price channel significantly exacerbates business cycle fluctuations through both financial accelerator and bank capital channels. Our results support the increasing emphasis on common equity capital in Basel III regulations. This is beneficial in terms of financial stability, but amplifies and propagates shocks to the real economy.

 
JEL Classification:

E32, E43, E44, E51, G12

Keywords:

Equity price channel, asset pricing, financial frictions, bank capital, New-Keynesian, Bayesian

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BER Weekly

21 January
Domestically, markets were focused on the latest meeting of the Monetary Policy Committee (MPC) of the SA Reserve Bank (SARB) last week. On the global front, the news flow was dominated by British political chaos associated with the Brexit debacle. Besides a brief overview of the MPC decision, the domestic section looks at the latest retail sales data,...

Read the full issue