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      Cointegração e descoberta de preços de ADR brasileiros Translated title: Cointegration and brazilian ADR price discovery

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          Abstract

          Este trabalho examina a formação dos preços de papéis brasileiros negociados na New York Stock Exchange [NYSE] através de American Depositary Receipts [ADRs]. Verificou-se se os preços dos pares ação-ADR possuem tendência comum de longo prazo, isto é, se suas séries cointegram e, além disso, quantificou-se a contribuição de cada ativo (ADR e ação) na formação do preço de longo prazo através da razão de ajustamento proposta por Eun e Sabherwal (2003). Complementando o trabalho de Sanvicente (1998), que analisou a integração entre os índices Ibovespa e Dow Jones, este trabalho examina a hipótese de integração, utilizando dados desagregados, com uma amostra de 32 papéis, que perfaziam conjuntamente mais de 67% do volume da bolsa brasileira, e seus respectivos ADRs, no período de fevereiro de 1999 a junho de 2006. Os resultados apontam que em apenas 15 pares há uma tendência de longo prazo comum entre a ação e sua ADR; em apenas 2 pares os parâmetros do modelo de correção de erros (VECM) são estatisticamente significantes, indicando que para somente 6,25% da amostra os ajustes necessários para a manutenção de um equilíbrio de longo prazo ocorrem em ambos os mercados.

          Translated abstract

          This paper examines double-listing contribution for the price discovery of Brazilian stocks negotiated at the NYSE through ADRs. It examines whether the prices of stock/ADR pairs have their own common long term relation or, alternatively, whether the prices are cointegrated. Furthermore, it quantifies the contribution of each asset (ADR and stock) in long term price formation through the method proposed by Eun and Sabherwal (2003). Complementing the work of Sanvicente (1998), which analyzes the cointegration between the Ibovespa and Dow Jones indexes, this paper examines the cointegration hypothesis using disaggregated data, with a sample of 32 stocks that jointly made up over 67% of the volume of the Brazilian Market and its respective ADRs between February 1999 and June 2006. The results show that in only 15 pairs is there a long-term relationship between stock and its ADR. The results also show that the parameters of the vector error correction model (VECM) are statistically significant in only two pairs, demonstrating that the necessary adjustments for the maintenance of a long term equilibrium occur in both markets for only 6.25% of the sample.

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          Statistical analysis of cointegration vectors

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            A Simple Model of Capital Market Equilibrium with Incomplete Information

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              Efficient Capital Markets: II

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rac
                Revista de Administração Contemporânea
                Rev. adm. contemp.
                Associação Nacional dos Programas de Pós-graduação em Administração (Curitiba )
                1982-7849
                June 2009
                : 13
                : 2
                : 272-290
                Affiliations
                [1 ] Faculdades Oswaldo Cruz Brazil
                Article
                S1415-65552009000200007
                10.1590/S1415-65552009000200007
                8529c610-9754-49ff-8c69-4b43fe52afe2

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1415-6555&lng=en
                Categories
                MANAGEMENT

                Management
                cointegration,capital market,descoberta de preços,ADR,cointegração,mercado de capitais,price discovery

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