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Welfare effects of financial integration

  • Hartmann, Philipp
  • Grüner, Hans Peter
  • Fecht, Falko

This paper compares four forms of inter-regional financial risk sharing: (i) segmentation, (ii) integration trough the secured interbank market, (iii) integration trough the unsecured interbank market, (iv) integration of retail markets. The secured interbank market is an optimal risk-sharing device when banks report liquidity needs truthfully. It allows diversification without the risk of cross-regional financial contagion. However, free-riding on the liquidity provision in this market restrains the achievable risk-sharing as the number of integrated regions increases. In too large an area this moral hazard problem becomes so severe that either unsecured interbank lending or, ultimately, the penetration of retail markets is preferable. Even though this deeper financial integration entails the risk of contagion it may be beneficial for large economic areas, because it can implement an efficient sharing of idiosyncratic regional shocks. Therefore, the enlargement of a monetary union, for example, extending the common interbank market might increase the benefits of also integrating retail banking markets through cross-border transactions or bank mergers.

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File URL: https://www.econstor.eu/bitstream/10419/19770/1/200711dkp_b_.pdf
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Paper provided by Deutsche Bundesbank, Research Centre in its series Discussion Paper Series 2: Banking and Financial Studies with number 2007,11.

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Date of creation: 2007
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Handle: RePEc:zbw:bubdp2:6154
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  1. Xavier Freixas & Cornelia Holthausen, 2001. "Interbank market integration under asymmetric information," Economics Working Papers 579, Department of Economics and Business, Universitat Pompeu Fabra.
  2. Xavier Freixas & Bruno Parigi & Jean Charles Rochet, 1998. "Systemic risk, interbank relations and liquidity provision by the Central Bank," Economics Working Papers 440, Department of Economics and Business, Universitat Pompeu Fabra, revised Sep 1999.
  3. Jean-Charles Rochet & Jean Tirole, 1996. "Interbank lending and systemic risk," Proceedings, Board of Governors of the Federal Reserve System (U.S.), pages 733-765.
  4. Allen, Franklin & Gale, Douglas, 1998. "Financial Contagion," Working Papers 98-33, C.V. Starr Center for Applied Economics, New York University.
  5. Douglas W. Diamond & Raghuram G. Rajan, 2002. "Liquidity Shortages and Banking Crises," NBER Working Papers 8937, National Bureau of Economic Research, Inc.
  6. Stulz, Rene M., 2005. "The Limits of Financial Globalization," Working Paper Series 2005-1, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
  7. Carletti, Elena & Hartmann, Philipp & Spagnolo, Giancarlo, 2006. "Bank mergers, competition and liquidity," CFS Working Paper Series 2006/08, Center for Financial Studies (CFS).
  8. Lieven Baele, 2004. "Measuring European Financial Integration," Oxford Review of Economic Policy, Oxford University Press, vol. 20(4), pages 509-530, Winter.
  9. Hans Degryse & Steven Ongena, 2004. "The Impact of Technology and Regulation on the Geographical Scope of Banking," Working Papers Department of Economics ces0408, KU Leuven, Faculty of Economics and Business, Department of Economics.
  10. Jith Jayaratne & Philip E. Strahan, 1997. "The benefits of branching deregulation," Economic Policy Review, Federal Reserve Bank of New York, issue Dec, pages 13-29.
  11. Yaron Leitner, 2005. "Financial Networks: Contagion, Commitment, and Private Sector Bailouts," Journal of Finance, American Finance Association, vol. 60(6), pages 2925-2953, December.
  12. Bhattacharya, Sudipto & Fulghieri, Paolo, 1994. "Uncertain liquidity and interbank contracting," Economics Letters, Elsevier, vol. 44(3), pages 287-294.
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