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      O fenômeno de retornos anormais decorrentes da inclusão e exclusão das ações na Carteira Teórica do Índice Bovespa Translated title: The phenomenon of extraordinary returns resulting from stock inclusion in and exclusion from the theoretical market portfolio of the Bovespa index

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          Abstract

          Este trabalho procura medir os retornos extraordinários das ações que experimentam a ocorrência de inclusão e exclusão da Carteira Teórica do Índice Bovespa, por meio do uso da metodologia de Event Study e do Modelo de Precificação de Ativos de Capital - CAPM - como benchmark. Conclui-se que as ações da Bolsa de Valores de São Paulo que são afetadas pela recomposição da Carteira apresentaram evidências de mudança em seus preços, durante a primeira metade da década de 1990.

          Translated abstract

          This research aims to measure extraordinary returns of stocks due to their inclusion in and exclusion from the Theoretical Market Portfolio of the São Paulo Stock Exchange Index, using the "Event Study" methodology and the Capital Asset Pricing Model - CAPM - as a benchmark. It is concluded that the stocks on the São Paulo Stock Exchange which were affected by the recomposition of the Theoretical Portfolio gave evidence of price changes during the firsthalf of the 1990's.

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          Most cited references18

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          Capital Asset Prices: A Theory of Market Equilibrium under Conditions of Risk

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            The Valuation of Risk Assets and the Selection of Risky Investments in Stock Portfolios and Capital Budgets

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              Portfolio Selection

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                Author and article information

                Journal
                rcf
                Revista Contabilidade & Finanças
                Rev. contab. finanç.
                Universidade de São Paulo, Faculdade de Economia, Administração e Contabilidade, Departamento de Contabilidade e Atuária (São Paulo, SP, Brazil )
                1519-7077
                1808-057X
                December 2007
                : 18
                : 45
                : 73-82
                Affiliations
                [01] orgnameUniversidad San Francisco de Quito orgdiv1Colégio de Administración para el Desarrollo Ecuador
                Article
                S1519-70772007000400007 S1519-7077(07)01804507
                c8c67433-e98d-482b-b746-b846be9c8b0d

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 26 September 2006
                : 23 March 2007
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 10
                Product

                SciELO Brazil

                Self URI: Texto completo somente em PDF (PT)
                Categories
                Artigos

                Benchmark,Conteúdo informacional,Retorno extraordinário,Signaling,Extraordinary returns

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