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Banking Sector Concentration, Credit Supply 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 supply shocks contribution to aggregate credit supply. 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 Supply Shocks and Aggregate Fluctuations," MPRA Paper 111972, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:111972
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    References listed on IDEAS

    as
    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.
    2. Vasco Carvalho & Xavier Gabaix, 2013. "The Great Diversification and Its Undoing," American Economic Review, American Economic Association, vol. 103(5), pages 1697-1727, August.
    3. Franziska Bremus & Claudia M. Buch & Katheryn N. Russ & Monika Schnitzer, 2018. "Big Banks and Macroeconomic Outcomes: Theory and Cross‐Country Evidence of Granularity," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 50(8), pages 1785-1825, December.
    4. Xavier Gabaix, 2011. "The Granular Origins of Aggregate Fluctuations," Econometrica, Econometric Society, vol. 79(3), pages 733-772, May.
    5. 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.
    6. 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.
    7. Bremus, Franziska & Ludolph, Melina, 2021. "The nexus between loan portfolio size and volatility: Does bank capital regulation matter?," Journal of Banking & Finance, Elsevier, vol. 127(C).
    8. Daron Acemoglu & Vasco M. Carvalho & Asuman Ozdaglar & Alireza Tahbaz‐Salehi, 2012. "The Network Origins of Aggregate Fluctuations," Econometrica, Econometric Society, vol. 80(5), pages 1977-2016, September.
    9. Buch, Claudia M. & Neugebauer, Katja, 2011. "Bank-specific shocks and the real economy," Journal of Banking & Finance, Elsevier, vol. 35(8), pages 2179-2187, August.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    Granular Residual; Idiosyncratic Shocks; Banking Sector; Manufacturing Sec- tor; 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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