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Efficient Asset Allocations in the Banking Sector and Financial Regulation

Author

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  • Wolf Wagner

    (European Banking Centre, CentER, TILEC, and Department of Economics, Tilburg University)

Abstract

The failure of a bank or the case of a bank experiencing a crisis usually has negative spillovers for other banks in the economy, such as through informational contagion or an increased cost of borrowing. Such spillovers are likely to be higher when the other banks are close to failure as well. This paper shows that this gives rise to externalities among banks which arise from their portfolio choices. The reason is that the assets a bank holds on its balance sheet determine the situations in which a bank will be in a crisis, and thus whether this will be at a time when other banks are in a crisis as well. As a result, the equilibrium portfolio allocations in the economy are typically not efficient. Some banks may choose too correlated portfolios, but others may choose tooheterogeneous portfolios. The optimal regulatory treatment of banks is typically heterogeneous and may involve encouraging more correlation at already highly correlated banks but lowering correlation at other banks. Additional inefficiencies arise when bank failures also have implications outside the banking sector. Overall, the paper highlights a role for regulation in a financial system in which the costs of financial stress at institutions are interdependent. JEL Codes: G21, G28.

Suggested Citation

  • Wolf Wagner, 2009. "Efficient Asset Allocations in the Banking Sector and Financial Regulation," International Journal of Central Banking, International Journal of Central Banking, vol. 5(1), pages 75-95, March.
  • Handle: RePEc:ijc:ijcjou:y:2009:q:1:a:3
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    References listed on IDEAS

    as
    1. Isabel Schnabel & Hyun Song Shin, 2004. "Liquidity and Contagion: The Crisis of 1763," Journal of the European Economic Association, MIT Press, vol. 2(6), pages 929-968, December.
    2. Perotti, Enrico C. & Suarez, Javier, 2002. "Last bank standing: What do I gain if you fail?," European Economic Review, Elsevier, vol. 46(9), pages 1599-1622, October.
    3. Acharya, Viral & Song Shin, Hyun & Yorulmazer, Tanju, 2009. "Endogenous choice of bank liquidity: the role of fire sales," Bank of England working papers 376, Bank of England.
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    Citations

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    Cited by:

    1. Reint Gropp & Anil K Kashyap, 2010. "A New Metric for Banking Integration in Europe," NBER Chapters,in: Europe and the Euro, pages 219-246 National Bureau of Economic Research, Inc.
    2. Riccetti, Luca & Russo, Alberto & Gallegati, Mauro, 2013. "Leveraged network-based financial accelerator," Journal of Economic Dynamics and Control, Elsevier, vol. 37(8), pages 1626-1640.
    3. Toni Ahnert, 2016. "Rollover Risk, Liquidity and Macroprudential Regulation," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 48(8), pages 1753-1785, December.
    4. Jin Cao & Gerhard Illing, 2010. "Regulation of systemic liquidity risk," Financial Markets and Portfolio Management, Springer;Swiss Society for Financial Market Research, vol. 24(1), pages 31-48, March.
    5. Nijskens, Rob & Wagner, Wolf, 2011. "Credit risk transfer activities and systemic risk: How banks became less risky individually but posed greater risks to the financial system at the same time," Journal of Banking & Finance, Elsevier, vol. 35(6), pages 1391-1398, June.

    More about this item

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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