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Market power versus efficiency under uncertainty: conventional versus Islamic banking in the GCC

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  • Azzeddine Azzam
  • Belaid Rettab

Abstract

In this article we estimate the effect of concentration on intermediation margins in Gulf Cooperation Council's (GCC) Islamic and conventional banking under the assumption that margins are uncertain. The empirical model, which we formally derive from an expected utility maximization problem, allows us to test for risk aversion as well as competitive conduct in loan and the deposit markets. The model also yields an expression showing that the effect of concentration on margins is the sum of its respective effects on market power, marginal cost of intermediation and marginal cost of uncertainty. The expression allows us to test whether concentration is welfare enhancing, reducing or neutral. We find Islamic banks to be risk-averse and conventional banks to be risk-neutral. We also find that concentration is welfare-neutral in Islamic loans and deposits, welfare-enhancing in conventional loans and welfare-neutral in conventional deposits. We used Nonlinear Two-Stage Least Squares (N2SLS) and Nonlinear Three-Stage Least Squares (N3SLS) to check for robustness.

Suggested Citation

  • Azzeddine Azzam & Belaid Rettab, 2013. "Market power versus efficiency under uncertainty: conventional versus Islamic banking in the GCC," Applied Economics, Taylor & Francis Journals, vol. 45(15), pages 2011-2022, May.
    • Handle: RePEc:taf:applec:45:y:2013:i:15:p:2011-2022
    DOI: 10.1080/00036846.2011.646068
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    References listed on IDEAS

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    1. Kamaruddin, Badrul Hisham & Safa, Mohammad Samaun & Mohd, Rohani, 2008. "Assessing production efficiency of Islamic banks and conventional bank Islamic windows in Malaysia," MPRA Paper 10670, University Library of Munich, Germany, revised 10 May 2008.
    2. Oz Shy, 1996. "Industrial Organization: Theory and Applications," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262691795, December.
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    1. Ibrahim, Mansor H. & Rizvi, Syed Aun R., 2018. "Bank lending, deposits and risk-taking in times of crisis: A panel analysis of Islamic and conventional banks," Emerging Markets Review, Elsevier, vol. 35(C), pages 31-47.
    2. Dimitrios Panagiotou, 2019. "Market Power Effects of the Livestock Mandatory Reporting Act in the U.S. Meat Industry: a Stochastic Frontier Approach Under Uncertainty," Journal of Industry, Competition and Trade, Springer, vol. 19(1), pages 103-122, March.
    3. Baldwin, Kenneth & Alhalboni, Maryam, 2023. "A value-based measure of market power for the participatory deposits of Islamic banks," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 87(C).
    4. Stapah @ Salleh, Maisyarah & Possumah, Bayu Taufiq & Ahmat, Nizam, 2021. "The Impact of Financing Contracts on the Profitability of Islamic Banks," Jurnal Ekonomi Malaysia, Faculty of Economics and Business, Universiti Kebangsaan Malaysia, vol. 55(3), pages 149-164.
    5. Hassan, M. Kabir & Aliyu, Sirajo, 2018. "A contemporary survey of islamic banking literature," Journal of Financial Stability, Elsevier, vol. 34(C), pages 12-43.
    6. Narayan, Paresh Kumar & Phan, Dinh Hoang Bach, 2019. "A survey of Islamic banking and finance literature: Issues, challenges and future directions," Pacific-Basin Finance Journal, Elsevier, vol. 53(C), pages 484-496.

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