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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Evidências empíricas do modelo de Ohlson (1995) para o Brasil

Lima, Aline Nast de 18 February 2008 (has links)
Made available in DSpace on 2015-03-05T19:13:43Z (GMT). No. of bitstreams: 0 Previous issue date: 18 / Nenhuma / A proposta deste estudo é testar empiricamente se o modelo de avaliação da firma proposto por Ohlson, em 1995, produz estimativas adequadas para os dados das principais empresas brasileiras listadas na Bolsa de Valores de São Paulo (Bovespa) no período de 2002 a 2005. Destaca-se que a aplicação empírica de todas as premissas desse modelo ainda é relativamente escassa e controversa para mercados emergentes. Foram testadas as funções de preço e retorno de Ohlson (1995), cada qual com diferentes especificações, de acordo com os resultados obtidos para os parâmetros de persistência do resultado anormal e da variável "outra informação". Dessa forma, o presente estudo adotou duas metodologias para estimar empiricamente as funções descritas, as quais divergem fundamentalmente quanto ao tratamento de dados aplicado, dadas às limitações inerentes ao tamanho da amostra utilizada. A primeira metodologia desenvolvida estritamente conforme os pressupostos teóricos de Ohlson (1995) consistiu em testar o modelo através de u / This study aims at empirically testing whether the equity valuation model as proposed by Ohlson in 1995 fits the data from the major Brazilian companies listed on Sao Paulo Stock Exchange (Bovespa), in the period 2002-2005. It has been highlighted that the empirical application of all the premises of this model is still relatively rare and controvert for emerging markets. Ohlson’s (1995) price and return functions have been tested, each with different specifications, according to the results obtained for the persistence parameters of both the abnormal earnings and the “other information” variable. Thus, the present study has adopted two methodologies to empirically estimate the functions mentioned above, which fundamentally diverge as to the data treatment applied, given the limitations inherent to the size of the sample used. The first methodology strictly developed according to the theoretical assumptions of Ohlson (1995) was testing the model through a cross section cut-off analysis for a 53-stock panel

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