My research in banking market structure encompasses a wide array of issues, ranging from competition and concentration, over privatization to Islamic banking. Most of these papers are based on bank-level data.
Keep Walking? Geographic Proximity, Religion, and Relationship Banking, with Steven Ongena and Ilkay Sendeniz-Yuncu, Journal of Corporate Finance, 2019, 55, 49-68.
Bank Competition and Stability: Cross-country Heterogeneity, with Olivier De Jonghe and Glenn Schepens. Journal of Financial Intermediation 22, 218-44, 2013.
Islamic vs. Conventional Banking: Business Model, Efficiency and Stability, with Asli Demirguc-Kunt and Oarda Merrouce, Journal of Banking and Finance 37, 433-447, 2013.
Foreign Bank Acquisitions and Outreach: Evidence from Mexico, with Maria Soledad Martinez Peria. Journal of Financial Intermediation, 19, 52-73, 2010.
Bank Concentration, Competition, and Crises: First Results, with A. Demirgüç-Kunt and R. Levine, Journal of Banking and Finance 30, May 2006, 1581-1603. Dataset and appendix
Bank Concentration and Fragility: Impact and Mechanics, with A. Demirgüç-Kunt and R. Levine, The Risks of Financial Institutions, R. Stulz and M. Carey (eds.), National Bureau of Economic Research, June 2005.
Bank Privatization and Performance: Empirical Evidence from Nigeria, with R. Cull and A. Jerome, Journal of Banking and Finance 29, August-September 2005, pp. 2355-2379.
State Bank Transformation in Brazil - Choice and Consequences, with J. Crivelli and W. Summerhill, Journal of Banking and Finance, 29, August-September 2005, pp. 2223-2257.
Bank Competition and Access to Finance, with A. Demirgüç-Kunt and V. Maksimovic, Journal of Money, Credit and Banking 36, June 2004, pp. 627-648.