Abstract:

In this study, the market structure of the Turkish banking sector was investigated between 2004-2014. Herfindahl- Hirschman Index This result is important in the banking sector in terms of the efficient use of resources and the demonstration of the efficiency of savings into investments:  This result  supports the findings of Claessens and Laeven (2004), Abbasoğlu et al. (2007), Özcan (2012), Uzgören and Tarhan (2012), in the literatüre. CR4 and Herfindahl-Hirschman the calculation of the Index study the Turkish banking sector have reached the conclusion a monopolistic competitive market structure. 

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