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Bank size, credit and the sources of bank market risk

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  • Ryan Stever

Abstract

This study examines bank risk by investigating the equity and loan portfolio characteristics of publicly-traded bank holding companies. Unlike the pattern for non-financial firms, equity betas of large banks are two to five times greater than those of small banks. In explaining this, we note that regulation imposes an effective cap on banks' equity volatility. Because the portfolios of small banks are less diversified, this cap has a greater effect on small banks than large banks. But we reject the hypothesis that small banks lower their equity volatility through lower leverage. Instead, we find that the reduced ability of small banks to diversify forces them to either pick borrowers whose assets have relatively low credit risk or make loans that are backed by relatively more collateral.

Suggested Citation

  • Ryan Stever, 2007. "Bank size, credit and the sources of bank market risk," BIS Working Papers 238, Bank for International Settlements.
  • Handle: RePEc:bis:biswps:238
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    References listed on IDEAS

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    1. Jalal D. Akhavein & Allen N. Berger & David B. Humphrey, 1996. "The Effects of Megamergers on Efficiency and Prices: Evidence from a Bank Profit Function," Center for Financial Institutions Working Papers 96-03, Wharton School Center for Financial Institutions, University of Pennsylvania.
    2. Jalal D. Akhavein & Allen N. Berger & David B. Humphrey, "undated". "The Effects of Megamergers on Efficiency and Prices: Evidence from a Bank Profit Function," Finance and Economics Discussion Series 1997-09, Board of Governors of the Federal Reserve System (U.S.).
    3. Jose A. Lopez, 2001. "Federal Reserve banks' imputed cost of equity capital," FRBSF Economic Letter, Federal Reserve Bank of San Francisco, issue aug10.
    4. Douglas W. Diamond, 1984. "Financial Intermediation and Delegated Monitoring," Review of Economic Studies, Oxford University Press, vol. 51(3), pages 393-414.
    5. Barry Eichengreen, 1986. "The Political Economy of the Smoot-Hawley Tariff," NBER Working Papers 2001, National Bureau of Economic Research, Inc.
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    Cited by:

    1. repec:pal:easeco:v:44:y:2018:i:1:d:10.1057_eej.2016.8 is not listed on IDEAS
    2. Mare, Davide Salvatore & Moreira, Fernando & Rossi, Roberto, 2017. "Nonstationary Z-Score measures," European Journal of Operational Research, Elsevier, vol. 260(1), pages 348-358.
    3. Kontsevoy, Denis, 2013. "Empirical analysis of Russian commercial banks growth dynamics," Applied Econometrics, Publishing House "SINERGIA PRESS", vol. 29(1), pages 67-81.
    4. Moutsianas, Konstantinos A. & Kosmidou, Kyriaki, 2016. "Bank earnings volatility in the UK: Does size matter? A comparison between commercial and investment banks," Research in International Business and Finance, Elsevier, vol. 38(C), pages 137-150.
    5. Christian E. Weller & Ghazal Zulfiqar, 2013. "Financial Market Diversity and Macroeconomic Stability," Working Papers wp332, Political Economy Research Institute, University of Massachusetts at Amherst.

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    Keywords

    FBank size; beta; idiosyncratic; volatility;

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