How can i mesure market structure?

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Dmitry Burakov

Credit market theory distinguishes between competition-stability nexus and competition-fragility nexus. The same goes for competition-concentration nexus.

See e.g.

Working Paper The ‘competition–stability nexus’: Is efficiency an appropri...

Working Paper The ‘competition–stability/fragility’ nexus: A comparative a...

http://siteresources.worldbank.org/DEC/Resources/84797-1114437274304/jmcb_intro_final.pdf

For measuring competition, structural and non-structural methods are applied. The most used are:

Herfindahl-Hirschman Index, Lerner index, Panzar-Rosse H-statistic, Z-score, Boone Index, herd behavior indices.

Thanks for the question.

Hermann Ndoya

thank you for your answer.

My study focuses in banking system and can i still use these theory?

Yeah, sure. See this one paper for example. Might be useful.

Article Bank concentration, competition, and financial inclusion

thank you very much