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Decentralized Market Power in Credit Markets

Author

Listed:
  • Silva, Thiago
  • Souza, Sérgio
  • Guerra, Solange
  • Tabak, Benjamin

Abstract

The literature measures a bank's market power using aggregated data at the bank level. However, market power may be exercised in a decentralized way by each bank branch and for specific banking products. This article proposes a novel methodology for estimating a bank's market power at the branch level in each locality and for each banking product. We find significant heterogeneity in banks' market power by locality and product, even within the same bank. Our results suggest that aggregate measures of bank market power may be misleading and distorted. Accurate quantification of market power requires fine-grained measures, which are essential for enhancing financial regulation and competition.

Suggested Citation

  • Silva, Thiago & Souza, Sérgio & Guerra, Solange & Tabak, Benjamin, 2022. "Decentralized Market Power in Credit Markets," MPRA Paper 114766, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:114766
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    File URL: https://mpra.ub.uni-muenchen.de/114766/1/MPRA_paper_114766.pdf
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    References listed on IDEAS

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    Cited by:

    1. Silva, Thiago Christiano & de Souza, Sergio Rubens Stancato & Guerra, Solange Maria & Tabak, Benjamin Miranda, 2023. "COVID-19 and bank branch lending: The moderating effect of digitalization," Journal of Banking & Finance, Elsevier, vol. 152(C).

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    More about this item

    Keywords

    market power; Lerner index; competition; credit market; COVID-19;
    All these keywords.

    JEL classification:

    • C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms

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