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The determinants of bank margins revisited: A note on the effects of diversification

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Most of the theoretical and empirical literature on bank margins has dealt solely with interest margins. Applying the seminal Ho-Saunders model (JFQA, 1981) to a multi-output framework, we show that the relationship between bank margins and market power (controlling for risk) varies significantly across bank specializations. Using a set of both accounting margins and New Empirical Industrial Organization (NEIO) margins, we find that market power rises significantly with output diversification towards non-traditional activities. These results contribute to explain the paradoxical coexistence of decreasing interest margins and higher market power found in previous studies.

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  • Santiago Carbó Valverde & Francisco Rodríguez Fernández, 2005. "The determinants of bank margins revisited: A note on the effects of diversification," ThE Papers 05/11, Department of Economic Theory and Economic History of the University of Granada..
    • Handle: RePEc:gra:wpaper:05/11
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    More about this item

    Keywords

    bank margins; specialization; market structure.;
    All these keywords.

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • D40 - Microeconomics - - Market Structure, Pricing, and Design - - - General

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