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Asset Bubbles & Global Imbalances

  • Daisuke Ikeda
  • Toan Phan

We introduce asymmetry in financial frictions into a two-country growth model with overlapping generations, by assuming that the South faces more severe financial frictions than the North. We show that this asymmetry causes capital to flow upstream from South to North, thus explaining the so called global imbalances. More importantly, we show that capital inflows from the South enable a rational bubble to emerge in the North, despite that a Northern bubble could never emerge if the North were a closed economy. Furthermore, the bubble is inefficient as it crowds out global investment in Northern capital, and the bubble reduces steady state welfare in both North and South. Our model formalizes the idea that a 'savings glut' flowing from financially underdeveloped emerging economies into the U.S. fueled the boom of a subprime mortgage bubble in the 2000s.

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Paper provided by Department of Research, Ipag Business School in its series Working Papers with number 2013-041.

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Length: 31 pages
Date of creation: 20 Dec 2013
Date of revision:
Handle: RePEc:ipg:wpaper:2013-041
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  1. Jaume Ventura & Alberto Martin, 2010. "Economic Growth with Bubbles," Working Papers 445, Barcelona Graduate School of Economics.
  2. Ricardo J. Caballero & Arvind Krishnamurthy, 2009. "Global Imbalances and Financial Fragility," American Economic Review, American Economic Association, vol. 99(2), pages 584-88, May.
  3. Grossman, G.M. & Yanagawa, N., 1992. "Asset Bubbles and Endogenous Growth," Papers 160, Princeton, Woodrow Wilson School - Public and International Affairs.
  4. Ricardo J. Caballero & Emmanuel Farhi & Pierre-Olivier Gourinchas, 2006. "An Equilibrium Model of Global Imbalances and Low Interest Rates," 2006 Meeting Papers 894, Society for Economic Dynamics.
  5. Saint-Paul, Gilles, 1992. "Fiscal Policy in an Endogenous Growth Model," The Quarterly Journal of Economics, MIT Press, vol. 107(4), pages 1243-59, November.
  6. Tomohiro Hirano & Noriyuki Yanagawa, 2010. "Asset Bubbles, Endogenous Growth, and Financial Frictions," CARF F-Series CARF-F-223, Center for Advanced Research in Finance, Faculty of Economics, The University of Tokyo, revised Sep 2010.
  7. Emmanuel Farhi & Jean Tirole, 2011. "Bubbly Liquidity," NBER Working Papers 16750, National Bureau of Economic Research, Inc.
  8. Tirole, Jean, 1985. "Asset Bubbles and Overlapping Generations," Econometrica, Econometric Society, vol. 53(6), pages 1499-1528, November.
  9. Andrew Abel & Gregory N. Mankiw & Lawrence H. Summers & Richard Zeckhauser, . "Assessing Dynamic Efficiency: Theory and Evidence," Rodney L. White Center for Financial Research Working Papers 14-88, Wharton School Rodney L. White Center for Financial Research.
  10. Ricardo J. Caballero & Arvind Krishnamurthy, 2005. "Bubbles and Capital Flow Volatility: Causes and Risk Management," NBER Working Papers 11618, National Bureau of Economic Research, Inc.
  11. Gourinchas, Pierre-Olivier & Rey, Hélène, 2013. "External Adjustment, Global Imbalances and Valuation Effects," CEPR Discussion Papers 9566, C.E.P.R. Discussion Papers.
  12. Paul A. Samuelson, 1958. "An Exact Consumption-Loan Model of Interest with or without the Social Contrivance of Money," Journal of Political Economy, University of Chicago Press, vol. 66, pages 467.
  13. Hirano, Tomohiro & Yanagawa, Noriyuki, 2010. "Asset Bubbles, Endogenous Growth, and Financial Frictions," MPRA Paper 24085, University Library of Munich, Germany.
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