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Return Volatility and International Portfolio Choice

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  • Nicolas Coeurdacier

    (ESSEC and Paris School of Economics)

  • Robert Kollmann

    (ECARES, Free University of Brussels & CEPR)

  • Philippe Martin

    (University Paris I & CEPR)

Abstract

Despite the liberalization of international capital flows during the last decades, typical investors continue to hold most of their wealth in domestic assets. International RBC models can explain that 'portfolio home bias', if consumption home bias is incorporated, i.e. the fact that the bulk of consumption consists of locally produced goods (Obstfeld (2006)). However RBC models fail to explain the high volatility of equity returns and real exchange rates, and predict excessive cross-country risk sharing. This paper develops a model that simultaneously generates realistic portfolio holdings and return volatilities, and imperfect risk pooling. In the structure here, there are supply shocks, aggregate demand shocks (variations in government purchases, taste shocks), and exogenous shocks to equity risk premia. There is trade in domestic and foreign stocks and bonds. Demand shocks and risk premium shocks generate realistic return volatility, and create a strong bias towards holding local equity. Intuitively, a country-specific demand increase raises the relative price of the locally produced good, if there is consumption home bias, and it thus raises the relative return on local equity; local equity thus has a high return, in states of the world in which the household wishes to consume a lot. By biasing their portfolios toward local equity, countries can also insulate their net foreign assets and consumption spending, from exogenous risk premium shocks. When taste shocks follow random walks, there are sunspot equilibria characterized by sizable departures from full risk sharing.

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Bibliographic Info

Paper provided by Society for Economic Dynamics in its series 2007 Meeting Papers with number 474.

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Date of creation: 2007
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Handle: RePEc:red:sed007:474

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  1. David K. Backus & Gregor W. Smith, 1993. "Consumption and Real Exchange Rates in Dynamic Economies with Non-Traded Goods," Working Papers 1252, Queen's University, Department of Economics.
  2. Fabio Ghironi, 2000. "Macroeconomic Interdependence under Incomplete Markets," Boston College Working Papers in Economics 471, Boston College Department of Economics, revised 07 Feb 2003.
  3. Maurice Obstfeld & Kenneth Rogoff, 2001. "The Six Major Puzzles in International Macroeconomics: Is There a Common Cause?," NBER Chapters, in: NBER Macroeconomics Annual 2000, Volume 15, pages 339-412 National Bureau of Economic Research, Inc.
  4. Anna Pavlova & Roberto Rigobon, 2007. "Asset Prices and Exchange Rates," Review of Financial Studies, Society for Financial Studies, vol. 20(4), pages 1139-1180.
  5. Fabio Ghironi & Jaewoo Lee & Alessandro Rebucci, 2009. "The Valuation Channel of External Adjustment," Boston College Working Papers in Economics 722, Boston College Department of Economics.
  6. Philippe Martin & Helene Rey, 2001. "Financial Super-Markets: Size Matters for Asset Trade," NBER Working Papers 8476, National Bureau of Economic Research, Inc.
  7. Martin, Philippe & Rey, Hélène, 2005. "Globalization and Emerging Markets: With or Without Crash?," CEPR Discussion Papers 5165, C.E.P.R. Discussion Papers.
  8. Heathcote, Jonathan & Perri, Fabrizio, 2008. "The International Diversification Puzzle is Not as Bad as You Think," CEPR Discussion Papers 6982, C.E.P.R. Discussion Papers.
  9. Robert Kollmann, 2006. "A dynamic general equilibrium model of international portfolio holding: comment," ULB Institutional Repository 2013/7622, ULB -- Universite Libre de Bruxelles.
  10. Jonathan Heathcote & Fabrizio Perri, 2001. "Financial Globalization and Real Regionalization," Working Papers 01-11, New York University, Leonard N. Stern School of Business, Department of Economics.
  11. V.V. Chari & Patrick J. Kehoe & Ellen R. McGrattan, 2000. "Can Sticky Price Models Generate Volatile and Persistent Real Exchange Rates?," NBER Working Papers 7869, National Bureau of Economic Research, Inc.
  12. Kollmann, R., 1992. "Consumption, Real Exchange Rates and the Structure of International Asset Markets," Cahiers de recherche 9232, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
  13. Kollmann, Robert, 1996. "Incomplete asset markets and the cross-country consumption correlation puzzle," Journal of Economic Dynamics and Control, Elsevier, vol. 20(5), pages 945-961, May.
  14. Akito Matsumoto & Charles Engel, 2005. "Portfolio Choice in a Monetary Open-Economy DSGE Model," IMF Working Papers 05/165, International Monetary Fund.
  15. Kollmann, Robert, 2006. "International Portfolio Equilibrium and the Current Account," CEPR Discussion Papers 5512, C.E.P.R. Discussion Papers.
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