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Financial Connections and Systemic Risk

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  • Allen, F.
  • Babus, A.
  • Carletti, E.

    (Tilburg University, Center for Economic Research)

Abstract

We develop a model where institutions form connections through swaps of projects in order to diversify their individual risk. These connections lead to two different network structures. In a clustered network groups of financial institutions hold identical portfolios and default together. In an unclustered network defaults are more dispersed. With long term finance welfare is the same in both networks. In contrast, when short term finance is used, the network structure matters. Upon the arrival of a signal about banks’ future defaults, investors update their expectations of bank solvency. If their expectations are low, they do not roll over the debt and there is systemic risk in that all institutions are early liquidated. We compare investors’ rollover decisions and welfare in the two networks.

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Bibliographic Info

Paper provided by Tilburg University, Center for Economic Research in its series Discussion Paper with number 2010-88S.

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Date of creation: 2010
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Handle: RePEc:dgr:kubcen:201088s

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Web page: http://center.uvt.nl

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Keywords: Financial networks; diversification; short term finance; rollover risk;

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  1. Nicole M. Boyson & Christof W. Stahel & Rene M. Stulz, 2008. "Hedge Fund Contagion and Liquidity," NBER Working Papers 14068, National Bureau of Economic Research, Inc.
  2. Freixas, Xavier & Parigi, Bruno M & Rochet, Jean-Charles, 2000. "Systemic Risk, Interbank Relations, and Liquidity Provision by the Central Bank," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 32(3), pages 611-38, August.
  3. Carmen M. Reinhart & Kenneth S. Rogoff, 2009. "This Time Is Different: Eight Centuries of Financial Folly," Economics Books, Princeton University Press, edition 1, volume 1, number 8973.
  4. Franklin Allen & Ana Babus & Elena Carletti, 2009. "Financial Crises: Theory and Evidence," Annual Review of Financial Economics, Annual Reviews, vol. 1(1), pages 97-116, November.
  5. Douglas W. Diamond & Raghuram G. Rajan, 1998. "Liquidity risk, liquidity creation and financial fragility: a theory of banking," Proceedings, Federal Reserve Bank of San Francisco, issue Sep.
  6. Diamond, Douglas W, 1991. "Debt Maturity Structure and Liquidity Risk," The Quarterly Journal of Economics, MIT Press, vol. 106(3), pages 709-37, August.
  7. Wagner, W.B., 2006. "Diversification at Financial Institutions and Systemic Crises," Discussion Paper 2006-71, Tilburg University, Center for Economic Research.
  8. Matthew O. Jackson & Asher Wolinsky, 1995. "A Strategic Model of Social and Economic Networks," Discussion Papers 1098R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  9. Richard J. Herring & Susan Wachter, 1999. "Real Estate Booms and Banking Busts: An International Perspective," Center for Financial Institutions Working Papers 99-27, Wharton School Center for Financial Institutions, University of Pennsylvania.
  10. Flannery, Mark J, 1986. " Asymmetric Information and Risky Debt Maturity Choice," Journal of Finance, American Finance Association, vol. 41(1), pages 19-37, March.
  11. Castiglionesi, F. & Navarro, N., 2007. "Optimal Fragile Financial Networks," Discussion Paper 2007-100, Tilburg University, Center for Economic Research.
  12. Calomiris, Charles W & Kahn, Charles M, 1991. "The Role of Demandable Debt in Structuring Optimal Banking Arrangements," American Economic Review, American Economic Association, vol. 81(3), pages 497-513, June.
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