Ensaios em teoria da firma bancária: estratégia de localização, dinâmica do spread bancário e suas implicações em um modelo baseado em agentes

• Ano de defesa: 2009
• Autor(a) principal: Guilherme Jonas Costa da Silva
• Tipo de documento: Tese
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: spread bancário; estratégia locacional; bancos; dinâmica complexa; Finanças; Bancos
• Link de acesso: http://hdl.handle.net/1843/AMSA-88DPA2

The objective of this dissertation is to develop an alternative analysis on three important themes for the theory of banking firm, which are, the location strategy, the dynamics of the banking spread and its implications for the economy. The first paper, entitled "Strategy of bank location", tried to contribute to the theory of the location of the bank services. At first, there was strong evidence showing that the bank location not only depended on economical factors. The developed model and the results found in the spatial econometrics analysis demonstrated that there is in fact certain spatial dependence in the location strategy of the banks, besides, that the distribution pattern of the agencies in the state of Minas Gerais is being explained through macroeconomics, political and prescriptive factors as well. In the second paper, entitled "Dynamics of the banking firm", the discussion was deepened on the high costs of the credit in Brazil, more specifically on the empirical and theoretical consistence of the macroeconomics determinants of the Brazilian banking spread in the period from 1995 to 2007. In order to evaluate the importance of those determinants, some Monte Carlo simulations where carried out. Following that, a macro dynamic model was developed to analyze the system stability. The observed results reinforce the theory that the macroeconomics factors explain most of the behavior regarding banking spread in the country, besides, the variable is in a steady state. Finally, the third paper, entitled "Microeconomic dynamics of the bank sector and its implications", developed an agent-based model with the intention of evaluating the interaction of the productive and financial sectors dynamics and observing the emerging properties of that system: the activity level instability. The hypothesis of the paper is that the reductions in the interest rate (or banking spread) affect the economy significantly, being capable of attenuating or amplifying the joint flotations. The results demonstrate that the interest rates reductions (and the bank spreads) enlarge the capacity of the firms to honor their commitments, reducing, therefore, the cyclical flotations of the system as a whole. Besides, the instability and the economical cycles became emerging phenomenons.