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Monetary Policy and Stock-Price Dynamics in a DSGE Framework

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  • Salvatore Nisticò

    (Università degli Studi di Roma “La Sapienza" and LUISS Guido Carli)

Abstract

This paper analyzes the role of stock prices in driving Monetary Policy for price stability in a Non-Ricardian DSGE model. It shows that the dynamics of the interest rate consistent with price stability requires a response to stock-price changes that depends on the shock driving them: a supply shock (e.g. productivity) does not require an additional, dedicated response relative to the standard Representative-Agent framework, while a demand shock does. Moreover, we show that implementing the exible-price allocation by means of an interest-rate rule that reacts to deviations of the stock-price level from the exible-price equilibrium incurs risks of endogenous instability that are the higher the less profitable on average equity shares. On the other hand, reacting to the stock-price growth rate is risk-free from the perspective of equilibrium determinacy, and can be beneficial from an overall real stability perspective.

Suggested Citation

  • Salvatore Nisticò, 2012. "Monetary Policy and Stock-Price Dynamics in a DSGE Framework," CSEF Working Papers 307, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy.
  • Handle: RePEc:sef:csefwp:307
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    More about this item

    Keywords

    Monetary Policy; DSGE Models; Stock Prices; Wealth Effects.;

    JEL classification:

    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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