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Welfare effects of financial integration

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Author Info
Hartmann, Philipp
Grüner, Hans Peter
Fecht, Falko

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Abstract

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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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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Related research
Keywords: Financial integration; interbank market; cross border lending; financial contagion;

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Find related papers by JEL classification:
D61 - Microeconomics - - Welfare Economics - - - Allocative Efficiency; Cost-Benefit Analysis
G10 - Financial Economics - - General Financial Markets - - - General (includes Measurement and Data)
E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Mortgages

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References listed on IDEAS
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  1. Rene M. Stulz, 2005. "The Limits of Financial Globalization," NBER Working Papers 11070, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
    Other versions:
  2. 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. [Downloadable!]
  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.
    Other versions:
  4. X. Freixas & B. Parigi & J-C. Rochet, 2000. "Systemic Risk, Interbank Relations and Liquidity Provision by theCentral Bank," DNB Staff Reports (discontinued) 47, Netherlands Central Bank. [Downloadable!]
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  5. Yaron Leitner, 2005. "Financial Networks: Contagion, Commitment, and Private Sector Bailouts," Journal of Finance, American Finance Association, vol. 60(6), pages 2925-2953, December. [Downloadable!] (restricted)
  6. Franklin Allen & Douglas Gale, 2001. "Financial Contagion," Journal of Political Economy, University of Chicago Press, vol. 108(1), pages 1-33, February. [Downloadable!] (restricted)
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  7. Douglas W. Diamond & Raghuram G. Rajan, 2005. "Liquidity Shortages and Banking Crises," Journal of Finance, American Finance Association, vol. 60(2), pages 615-647, 04. [Downloadable!] (restricted)
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  8. Hans Degryse, 2004. "The Impact of Technology and Regulation on the Geographical Scope of Banking," Oxford Review of Economic Policy, Oxford University Press, vol. 20(4), pages 571-590, Winter.
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  9. 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. [Downloadable!]
  10. Elena Carletti & Philipp Hartmann & Giancarlo Spagnolo, 2007. "Bank Mergers, Competition, and Liquidity," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 39(5), pages 1067-1105, 08. [Downloadable!] (restricted)
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  11. Bhattacharya, Sudipto & Fulghieri, Paolo, 1994. "Uncertain liquidity and interbank contracting," Economics Letters, Elsevier, vol. 44(3), pages 287-294. [Downloadable!] (restricted)
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