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Abstract(s)
Ao longo deste trabalho procurou-se explorar um tema actual, que afecta o sistema bancário mundial e que tem repercussões na economia global e na economia e sistema bancário nacional. Neste sentido, pretende-se mostrar a ênfase e os efeitos da Crise do Subprime Americana na possibilidade de ocorrência de risco sistémico no sistema bancário. Ostentando alguns modelos teóricos existentes de crises sistémicas, aspectos da regulação bancária existente e a perspectivas da abordagem de alguns autores que se pronunciaram sobre a ocorrência de crises sistémicas, como Keynes, Minsky e Stigliz.
No que confere á actuação dos mercados, analisou-se a problemática da teoria dos mercados eficientes, apontando algumas das suas lacunas e apontamos uma alternativa desenvolvida por Minsky a hipótese da instabilidade financeira. Efectuou-se um breve resumo dos factores e acontecimentos que contribuíram para a ocorrência da Crise do Subprime Americana, desde o aparecimento da bolha até ao rebentamento da mesma e o seu contributo para a propagação e tumultuo do sistema financeiro global.
Para complementar este trabalho, abordou-se um fenómeno de possível ocorrência de risco sistémico no sistema bancário nacional, no qual efectuamos a análise às cotações de algumas instituições bancárias cotadas na Bolsa de Valores de Lisboa.
Este trabalho pretende mostrar de uma forma alusiva, um tema que tem vindo a ser difundido mundialmente, aludindo á necessidade de uma regulação eficaz do sistema bancário e da necessidade de revisão dos aspectos e formas interventivas dos bancos centrais, abrangendo de uma forma generalista os impactos que o risco sistémico pode acarretar.
Throughout this work, the objective was to explore a current issue affecting the banking system, that has its repercussions in the global economy, and consequently, in the national economy, as well as on its banking system. Thus, it is intended to stress out and identify the effects of the American subprime crisis in case of a systemic risk in the banking system, through the support of some existing theoretical models of systemic crisis; aspects of existing bank regulation and some approach prospects of some authors who have outlined the occurrence of systemic crisis, such as Keynes, Minsky and Stigliz. In terms of the market performance, it was analyzed the problem concerning the efficient market theory, assuming some of its shortcomings and pointing out an alternative developed by Minsky´s financial instability hypothesis. So there’s a brief summary of factors and events that contributed to the occurrence of the American subprime crisis, since the emergence of the “bubble”, until its burst, and the contribution to the spread and disorder of the global financial system. In order to complement this work, it was addressed a phenomenon of a possible occurrence of a systemic risk in the national banking system, where we considered the prices of some banks listed on the Lisbon Stock Exchange. This work aims to show clearly, a subject that has been broadcasted worldwide, encouraging the need to promote effective regulation in the banking system and to review aspects and ways of intervention of the central banks, by overviewing the impacts that a systemic risk may create.
Throughout this work, the objective was to explore a current issue affecting the banking system, that has its repercussions in the global economy, and consequently, in the national economy, as well as on its banking system. Thus, it is intended to stress out and identify the effects of the American subprime crisis in case of a systemic risk in the banking system, through the support of some existing theoretical models of systemic crisis; aspects of existing bank regulation and some approach prospects of some authors who have outlined the occurrence of systemic crisis, such as Keynes, Minsky and Stigliz. In terms of the market performance, it was analyzed the problem concerning the efficient market theory, assuming some of its shortcomings and pointing out an alternative developed by Minsky´s financial instability hypothesis. So there’s a brief summary of factors and events that contributed to the occurrence of the American subprime crisis, since the emergence of the “bubble”, until its burst, and the contribution to the spread and disorder of the global financial system. In order to complement this work, it was addressed a phenomenon of a possible occurrence of a systemic risk in the national banking system, where we considered the prices of some banks listed on the Lisbon Stock Exchange. This work aims to show clearly, a subject that has been broadcasted worldwide, encouraging the need to promote effective regulation in the banking system and to review aspects and ways of intervention of the central banks, by overviewing the impacts that a systemic risk may create.
Description
Keywords
Sistema bancário - Portugal Controlo do risco - Acordo de Basileia II