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Stock prices and monetary policy: Re-examining the issue in a New Keynesian model with endogenous investment

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  • Grossi, Michele
  • Tamborini, Roberto

Abstract

In this paper the authors present a New Keynesian quantitative model with endogenous investment and stock-market sector that may shed further light on two unsettled issues: whether central banks should include some financial indicator in their policy rules, and which indicator may be expected to generate better stabilization performance. For comparative purposes the authors replicate the policy framework and assessment strategy of the well-known no-inclusion model of BernankeGertler (Monetary Policy and Asset Price Volatility, 1999, and Should Central Banks Respond to Movements in Asset Prices? 2001). The performance of five policy rules is assessed. Two are traditional Taylor rules (i.e. with no financial indicators) that differ in the relative weight on the output and inflation gaps. Three are financial Taylor rules, that is, augmented with one financial indicator: the deviation from trend of stock prices, of Tobin's q (the rate of change stock prices relative to capital stock) and of investment. The authors show results that are at variance with BernankeGertler. First, because among the traditional rules the best performing one is output aggressive instead of inflation aggressive. Second, because the financial rule with Tobin's q outperforms the traditional inflation-aggressive one under all dimensions and cases. However, the authors cannot draw a univocal conclusion as regards the comparison between the financial rule with Tobin's q and the traditional but output aggressive rule. --

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File URL: http://dx.doi.org/10.5018/economics-ejournal.ja.2012-14
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Bibliographic Info

Article provided by Kiel Institute for the World Economy in its journal Economics: The Open-Access, Open-Assessment E-Journal.

Volume (Year): 6 (2012)
Issue (Month): 14 ()
Pages: 1-47

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Handle: RePEc:zbw:ifweej:201214

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Keywords: New Keynesian models; monetary policy; stock markets and bubbles;

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References

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  1. Clarida, Richard & Galí, Jordi & Gertler, Mark, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," CEPR Discussion Papers 2139, C.E.P.R. Discussion Papers.
  2. Athanasios Orphanides & John C. Williams, 2002. "Robust monetary policy rules with unknown natural rates," Working Paper Series 2003-01, Federal Reserve Bank of San Francisco.
  3. Casares, Miguel & McCallum, Bennett T., 2006. "An optimizing IS-LM framework with endogenous investment," Journal of Macroeconomics, Elsevier, vol. 28(4), pages 621-644, December.
  4. Chirinko, Robert S. & Schaller, Huntley, 1996. "Bubbles, fundamentals, and investment: A multiple equation testing strategy," Journal of Monetary Economics, Elsevier, vol. 38(1), pages 47-76, August.
  5. Piti Disyatat, 2005. "Inflation Targeting, Asset Prices, and Financial Imbalances: Conceptualizing the Debate," Working Papers 2005-09, Economic Research Department, Bank of Thailand.
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  7. Nouriel Roubini, 2006. "Why Central Banks Should Burst Bubbles," International Finance, Wiley Blackwell, vol. 9(1), pages 87-107, 05.
  8. Tobin, James, 1969. "A General Equilibrium Approach to Monetary Theory," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 1(1), pages 15-29, February.
  9. Dieter Gerdesmeier & Hans‐Eggert Reimers & Barbara Roffia, 2010. "Asset Price Misalignments and the Role of Money and Credit," International Finance, Wiley Blackwell, vol. 13(3), pages 377-407, Winter.
  10. Christiano, Lawrence & Ilut, Cosmin & Motto, Roberto & Rostagno, Massimo, 2008. "Monetary policy and stock market boom-bust cycles," Working Paper Series 0955, European Central Bank.
  11. Dupor, Bill, 2005. "Stabilizing non-fundamental asset price movements under discretion and limited information," Journal of Monetary Economics, Elsevier, vol. 52(4), pages 727-747, May.
  12. Adam S. Posen, 2006. "Why Central Banks Should Not Burst Bubbles," Working Paper Series WP06-1, Peterson Institute for International Economics.
  13. Andrew Filardo, 2004. "Monetary policy and asset price bubbles: calibrating the monetary policy trade-offs," BIS Working Papers 155, Bank for International Settlements.
  14. Bordo, Michael D & Jeanne, Olivier, 2002. "Boom-Busts in Asset Prices, Economic Instability and Monetary Policy," CEPR Discussion Papers 3398, C.E.P.R. Discussion Papers.
  15. Roberto Tamborini, 2010. "Monetary Policy With Investment-Saving Imbalances," Metroeconomica, Wiley Blackwell, vol. 61(3), pages 473-509, 07.
  16. Allen, Franklin & Gale, Douglas, 1999. "Bubbles, Crises, and Policy," Oxford Review of Economic Policy, Oxford University Press, vol. 15(3), pages 9-18, Autumn.
  17. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
  18. Charles Bean, 2003. "Asset Prices, Financial Imbalances and Monetary Policy: Are Inflation Targets Enough?," RBA Annual Conference Volume, in: Anthony Richards & Tim Robinson (ed.), Asset Prices and Monetary Policy Reserve Bank of Australia.
  19. Galeotti, Marzio & Schiantarelli, Fabio, 1994. "Stock Market Volatility and Investment: Do Only Fundamentals Matter?," Economica, London School of Economics and Political Science, vol. 61(242), pages 147-65, May.
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Cited by:
  1. Ronny Mazzocchi, 2013. "Intertemporal Coordination Failure and Monetary Policy," DEM Discussion Papers 2013/15, Department of Economics and Management.
  2. Friedman, Benjamin M., 2012. "Rules versus discretion at the Federal Reserve System: On to the second century," Journal of Macroeconomics, Elsevier, vol. 34(3), pages 608-615.

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