TOPOLOGICAL PROPERTIES OF BANK NETWORKS: THE CASE OF BRAZIL

Benjamin Tabak, Daniel Cajueiro and Thiago R. Serra
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Thiago R. Serra: Department of Economics, Universidade de Brasília, Campus Universitário, Asa Norte, 70910-900, Brasília, DF, Brazil

International Journal of Modern Physics C (IJMPC), 2009, vol. 20, issue 08, 1121-1143

Abstract: This paper investigates the topological properties of bank networks. We build the minimum spanning tree, which is based on the concept of ultrametricity, using the correlation matrix for a variety of banking variables. Empirical results suggest that the private and foreign banks tend to form clusters within the network. Furthermore, banks with different sizes are also strongly connected and tend to form clusters. These results are robust to the use of different variables to build the network, such as bank profitability, assets, equity, revenue and loans.

Keywords: Complex networks; emerging markets; ownership; econophysics; minimum spanning tree; 11.25.Hf; 123.1K (search for similar items in EconPapers)
Date: 2009
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Citations: View citations in EconPapers (6)

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DOI: 10.1142/S0129183109014205

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