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Banking sector concentration, credit shocks and aggregate fluctuations

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  • Alfarano, Simone
  • Blanco-Arroyo, Omar

Abstract

This paper studies whether the raise in concentration experienced by the Spanish banking sector has lead to the increase of bank-specific credit shocks contribution to aggregate credit. We decompose aggregate credit volatility and find that (i) the Spanish banking sector is granular, (ii) the direct effect of bank-specific shocks accounts for the overwhelming majority of the variation in aggregate volatility, contrary to the manufacturing sector, and (iii) the raise in concentration translated into an increase of bank-specific shocks contribution to aggregate volatility.

Suggested Citation

  • Alfarano, Simone & Blanco-Arroyo, Omar, 2022. "Banking sector concentration, credit shocks and aggregate fluctuations," Economics Letters, Elsevier, vol. 218(C).
    • Handle: RePEc:eee:ecolet:v:218:y:2022:i:c:s0165176522002439
    DOI: 10.1016/j.econlet.2022.110709
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    References listed on IDEAS

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    1. Jesús Fernández-Villaverde & Luis Garicano & Tano Santos, 2013. "Political Credit Cycles: The Case of the Eurozone," Journal of Economic Perspectives, American Economic Association, vol. 27(3), pages 145-166, Summer.
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    7. Mary Amiti & David E. Weinstein, 2018. "How Much Do Idiosyncratic Bank Shocks Affect Investment? Evidence from Matched Bank-Firm Loan Data," Journal of Political Economy, University of Chicago Press, vol. 126(2), pages 525-587.
    8. Xavier Gabaix, 2011. "The Granular Origins of Aggregate Fluctuations," Econometrica, Econometric Society, vol. 79(3), pages 733-772, May.
    9. Alfaro, Laura & García-Santana, Manuel & Moral-Benito, Enrique, 2021. "On the direct and indirect real effects of credit supply shocks," Journal of Financial Economics, Elsevier, vol. 139(3), pages 895-921.
    10. Blanco-Arroyo, Omar & Ruiz-Buforn, Alba & Vidal-Tomás, David & Alfarano, Simone, 2018. "On the determination of the granular size of the economy," Economics Letters, Elsevier, vol. 173(C), pages 35-38.
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    More about this item

    Keywords

    Granular residual; Idiosyncratic shocks; Banking sector; Manufacturing sector; Concentration; Aggregate fluctuations;
    All these keywords.

    JEL classification:

    • 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; Micro Finance Institutions; Mortgages

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