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The effects of focus and diversification on bank risk and return: evidence from individual bank loan portfolios

Author

Listed:
  • Viral V. Acharya
  • Iftekhar Hasan
  • Anthony Saunders
Abstract
We study empirically the effect of focus (specialization) vs. diversification on the return and the risk of banks using data from 105 Italian banks over the period 1993?1999. Specifically, we analyze the tradeoffs between (loan portfolio) focus and diversification using a unique data set that is able to identify individual bank loan exposures to different industries, to different sectors, and to different geographical regions. Our results are consistent with a theory that predicts a deterioration in bank monitoring quality at high levels of risk and a deterioration in bank monitoring quality upon lending expansion into newer or competitive industries. Our most important findings are that industrial loan diversification reduces bank return while endogenously producing riskier loans for all banks in our sample, this effect being most powerful for high risk banks, sectoral loan diversification produces an inefficient risk?return tradeoff only for high risk banks, and geographical diversification results in an improvement in the risk?return tradeoff for banks with low levels of risk. A robust result that emerges from our empirical findings is that diversification of bank assets is not guaranteed to produce superior performance and/or greater safety for banks.

Suggested Citation

  • Viral V. Acharya & Iftekhar Hasan & Anthony Saunders, 2002. "The effects of focus and diversification on bank risk and return: evidence from individual bank loan portfolios," Proceedings 905, Federal Reserve Bank of Chicago.
    • Handle: RePEc:fip:fedhpr:905
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    More about this item

    Keywords

    Bank capital; Risk management;

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill

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