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Diversification and bank stability

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  • Liang, Shuo
  • Moreira, Fernando
  • Lee, Joosung

Abstract

This paper tests the theory of Wagner (2010) regarding the role of diversification in bank systemic risk and investigates whether this effect is different for bank standalone risk. We innovatively construct a country-level diversification measure to capture the risk distribution among banks. Based on a large dataset consisting of 1,346 international publicly listed banks from 49 countries from 1998 to 2018, our results confirm existing theoretical conclusions that higher diversification leads to more systemic risk and less bank standalone risk.

Suggested Citation

  • Liang, Shuo & Moreira, Fernando & Lee, Joosung, 2020. "Diversification and bank stability," Economics Letters, Elsevier, vol. 193(C).
    • Handle: RePEc:eee:ecolet:v:193:y:2020:i:c:s0165176520302081
    DOI: 10.1016/j.econlet.2020.109312
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    References listed on IDEAS

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    1. Wagner, Wolf, 2010. "Diversification at financial institutions and systemic crises," Journal of Financial Intermediation, Elsevier, vol. 19(3), pages 373-386, July.
    2. Laeven, Luc & Levine, Ross, 2007. "Is there a diversification discount in financial conglomerates?," Journal of Financial Economics, Elsevier, vol. 85(2), pages 331-367, August.
    3. Elsas, Ralf & Hackethal, Andreas & Holzhäuser, Markus, 2010. "The anatomy of bank diversification," Journal of Banking & Finance, Elsevier, vol. 34(6), pages 1274-1287, June.
    4. Harry Markowitz, 1952. "Portfolio Selection," Journal of Finance, American Finance Association, vol. 7(1), pages 77-91, March.
    5. William F. Sharpe, 1964. "Capital Asset Prices: A Theory Of Market Equilibrium Under Conditions Of Risk," Journal of Finance, American Finance Association, vol. 19(3), pages 425-442, September.
    6. Mercieca, Steve & Schaeck, Klaus & Wolfe, Simon, 2007. "Small European banks: Benefits from diversification?," Journal of Banking & Finance, Elsevier, vol. 31(7), pages 1975-1998, July.
    Full references (including those not matched with items on IDEAS)

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    Cited by:

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    3. Maghyereh, Aktham Issa & Yamani, Ehab, 2022. "Does bank income diversification affect systemic risk: New evidence from dual banking systems," Finance Research Letters, Elsevier, vol. 47(PB).
    4. Maghyereh, Aktham & Abdoh, Hussein & Al-Shboul, Mohammad, 2022. "Oil structural shocks, bank-level characteristics, and systemic risk: Evidence from dual banking systems," Economic Systems, Elsevier, vol. 46(4).

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    More about this item

    Keywords

    Country-level diversification; Idiosyncratic risk; Systemic risk;
    All these keywords.

    JEL classification:

    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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