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Interest Rates, Market Power, and Financial Stability

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Abstract

This paper shows the relevance of market power to assess the effects of safe interest rates on financial intermediaries' risk-taking decisions. We consider an economy where (i) intermediaries have market power in granting loans, (ii) intermediaries monitor borrowers which lowers their probability of default, and (iii) monitoring is costly and unobservable which creates a moral hazard problem with uninsured depositors. We show that lower safe rates lead to lower intermediation margins and higher risk-taking when intermediaries have low market power, but the result reverses for high market power. We examine the robustness of this result to introducing non-monitored market finance, heterogeneity in monitoring costs, and entry and exit of intermediaries. We also consider the effect of replacing uninsured by insured deposits, market power in raising deposits, and funding with both deposits and capital.

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  • David Martinez-Miera & Rafael Repullo, 2020. "Interest Rates, Market Power, and Financial Stability," Working Papers wp2020_2017, CEMFI.
    • Handle: RePEc:cmf:wpaper:wp2020_2017
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    1. Angela Maddaloni & Jose-Luis Peydro, 2011. "Bank Risk-taking, Securitization, Supervision, and Low Interest Rates: Evidence from the Euro-area and the U.S. Lending Standards," The Review of Financial Studies, Society for Financial Studies, vol. 24(6), pages 2121-2165.
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    6. Giovanni Dell'Ariccia & Luc Laeven & Gustavo A. Suarez, 2017. "Bank Leverage and Monetary Policy's Risk-Taking Channel: Evidence from the United States," Journal of Finance, American Finance Association, vol. 72(2), pages 613-654, April.
    7. Nuno Coimbra & Hélène Rey, 2024. "Financial Cycles with Heterogeneous Intermediaries," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 91(2), pages 817-857.
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    Cited by:

    1. Koenig, Philipp J. & Schliephake, Eva, 2021. "Bank risk-taking and impaired monetarypolicy transmission," Discussion Papers 42/2021, Deutsche Bundesbank.
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    3. Koenig, Philipp J. & Schliephake, Eva, 2022. "Bank risk-taking and impaired monetary policy transmission," Working Paper Series 2638, European Central Bank.
    4. Chen, Xiaoxiong & Liu, Guanchun & Liu, Yuanyuan & Zhang, Yanren, 2022. "Banks’ liability structure and risk taking: Evidence from a quasi-natural experiment in China," Finance Research Letters, Elsevier, vol. 49(C).
    5. Antoniades, Adonis, 2021. "Monetary easing and the lending concentration channel of monetary policy transmission," Journal of Banking & Finance, Elsevier, vol. 133(C).

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    More about this item

    Keywords

    Imperfect competition; intermediation margins; bank monitoring; bank risk-taking; monetary policy.;
    All these keywords.

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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