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On the efficiency of bilateral interbank insurance

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  • Castiglionesi, Fabio
  • Wagner, Wolf

Abstract

This paper studies banks’ incentives to engage in liquidity cross-insurance. In contrast to previous literature we view interbank insurance as the outcome of bilateral (and non-exclusive) contracting between pairs of banks and ask whether this outcome is socially efficient. Using a simple model of interbank insurance we find that this is indeed the case when insurance takes place through pure transfers. This is even though liquidity support among banks sometimes breaks down, as observed in the crisis of 2007–2008. However, when insurance is provided against some form of repayment (such as is the case, for example, with credit lines), banks have a tendency to insure each other less than the socially efficient amount. We show that efficiency can be restored by introducing seniority clauses for interbank claims or through subsidies that resemble government interbank lending guarantees.

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  • Castiglionesi, Fabio & Wagner, Wolf, 2013. "On the efficiency of bilateral interbank insurance," Journal of Financial Intermediation, Elsevier, vol. 22(2), pages 177-200.
  • Handle: RePEc:eee:jfinin:v:22:y:2013:i:2:p:177-200
    DOI: 10.1016/j.jfi.2012.07.002
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    2. Carlos León & Clara Machado & Miguel Sarmiento, 2014. "Identifying central bank liquidity super-spreaders in interbank funds networks," BORRADORES DE ECONOMIA 011187, BANCO DE LA REPÚBLICA.
    3. Carlos León & Jorge Cely & Carlos Cadena, 2016. "Identifying Interbank Loans, Rates, and Claims Networks from Transactional Data," Lecturas de Economía, Universidad de Antioquia, Departamento de Economía, issue 85, pages 91-125, Julio - D.
    4. Georg, Co-Pierre, 2014. "Contagious herding and endogenous network formation in financial networks," Working Paper Series 1700, European Central Bank.
    5. Leon Rincon, C.E. & Sarmiento, M., 2016. "Liquidity and Counterparty Risks Tradeoff in Money Market Networks," Discussion Paper 2016-017, Tilburg University, Center for Economic Research.
    6. Agur, Itai, 2014. "Bank risk within and across equilibria," Journal of Banking & Finance, Elsevier, vol. 48(C), pages 322-333.
    7. Elisa Luciano & Clas Wihlborg, 2013. "The Organization of Bank Affiliates; A Theoretical Perspective on Risk and Efficiency," ICER Working Papers 06-2013, ICER - International Centre for Economic Research.
    8. Panetti, Ettore, 2014. "Financial liberalization and contagion with unobservable savings," International Review of Financial Analysis, Elsevier, vol. 36(C), pages 20-35.
    9. Martínez, Constanza & León, Carlos, 2016. "The cost of collateralized borrowing in the Colombian money market: Does connectedness matter?," Journal of Financial Stability, Elsevier, vol. 25(C), pages 193-205.
    10. Miguel Sarmiento & Jorge Cely & Carlos León, 2015. "Monitoring the Unsecured Interbank Funds Market," Borradores de Economia 917, Banco de la Republica de Colombia.
    11. Craig, Ben R. & Koetter, Michael & Kruger, Ulrich, 2014. "Interbank Lending and Distress: Observables, Unobservables, and Network Structure," Working Paper 1418, Federal Reserve Bank of Cleveland.
    12. Leon Rincon, C.E., 2015. "Financial stability from a network perspective," Other publications TiSEM bb2e4e44-e842-45c6-a946-4, Tilburg University, School of Economics and Management.
    13. Cepeda, Fredy & Gamboa, Freddy & Leon Rincon, Carlos & Rincon, Hernan, 2017. "The Evolution of World Trade from 1995 to 2014 : A Network Approach," Discussion Paper 2017-008, Tilburg University, Center for Economic Research.
    14. Kok, Christoffer & Hałaj, Grzegorz, 2014. "Modeling emergence of the interbank networks," Working Paper Series 1646, European Central Bank.
    15. Elisa Luciano & Clas Wihlborg, 2013. "Financial synergies and the Organization of Bank Affiliates; A Theoretical Perspective on Risk and Efficiency," Carlo Alberto Notebooks 322, Collegio Carlo Alberto, revised 2014.
    16. Noémie NAVARRO & Fabio CASTIGLIONESI, 2016. "(In)Efficient Interbank Networks," Cahiers du GREThA 2016-13, Groupe de Recherche en Economie Théorique et Appliquée.
    17. Sarmiento, Miguel & Cely, Jorge & León, Carlos, 2017. "An early warning indicator system to monitor the unsecured interbank funds market," Research in International Business and Finance, Elsevier, vol. 40(C), pages 114-128.

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