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Hétérogénéité du système bancaire et « capital crunch »

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  • Olivier Bruno
  • Marc-Antoine Prunier

Abstract

In a heterogeneous financial system, we study a capital crunch transmission on total investment. We develop a model of endogenous credit allocation in which investors, small and large banks differ according to their level of capital and monitoring technology. In a context of moral hazard, imperfect substitutability between the different sources of external funds explains firms’ optimal choice of financing and the credit allocation in the economy. We show that a shock on the capital of the small bank leads to a contraction of credit and total investment larger than a shock of the same strength on the capital of the large bank. This result is explained by imperfect credit reallocation and by an asymmetrical increase of the different banks’ interest rate. Classification JEL : E5, D8, G2.

Suggested Citation

  • Olivier Bruno & Marc-Antoine Prunier, 2007. "Hétérogénéité du système bancaire et « capital crunch »," Revue économique, Presses de Sciences-Po, vol. 58(4), pages 841-861.
  • Handle: RePEc:cai:recosp:reco_584_0841
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    More about this item

    JEL classification:

    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • D8 - Microeconomics - - Information, Knowledge, and Uncertainty
    • G2 - Financial Economics - - Financial Institutions and Services

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