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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

A relação entre os investidores institucionais e o post-earnings-announcement drift: uma análise da eficiência de mercado no Brasil

Silva, Marcelo Pinto da 23 February 2015 (has links)
Submitted by Maicon Juliano Schmidt (maicons) on 2015-05-19T17:42:55Z No. of bitstreams: 1 2015 - Marcelo Pinto da Silva.pdf: 409898 bytes, checksum: 76321a9a9f4e504829e3de371afa40ec (MD5) / Made available in DSpace on 2015-05-19T17:42:55Z (GMT). No. of bitstreams: 1 2015 - Marcelo Pinto da Silva.pdf: 409898 bytes, checksum: 76321a9a9f4e504829e3de371afa40ec (MD5) Previous issue date: 2015-02-23 / Nenhuma / O presente trabalho concentra-se em uma investigação empírica acerca da relação entre os investidores institucionais e o comportamento dos retornos anormais das ações após a divulgação dos resultados, anomalia reconhecida na literatura estrangeira como post-earnings-announcement drift (PEAD). Esta pesquisa objetiva verificar alterações na hipótese de eficiência de mercado através da relação entre os investidores institucionais e o PEAD. Para tanto, elaborou-se quatro modelos de regressão com dados em painel com base em estudos anteriores em que a variável dependente é o retorno anormal acumulado (RAA) e as variáveis independentes explanatórias da pesquisa são o standardized unexpected earnings (SUE) e a participação acionária dos investidores institucionais (PII). Aplicou-se o teste de hipótese para verificar se a média do RAA era diferente de zero, bem como se aplicou o teste de Hausman para identificar o modelo de efeito fixo ou variável dos dados em painel. Verificou-se que os coeficientes das variáveis PII e RAA foram negativos e significantes a 1% e 10%. Dessa maneira, evidenciou-se para o período e empresas pesquisadas que os investidores institucionais contribuem para a eficiência de mercado, bem como para o conteúdo informativo dos dados contábeis, através de sua relação com o PEAD. / This work focuses on an empirical investigation about the relation between institutional investors and the abnormal returns of shares after earnings announcement, anomaly known in the foreign literature as post-earnings-announcement drift (PEAD). It aims at verifying alterations in the market efficiency hypothesis through the relationship between institutional investors and PEAD. Thus, it was developed four regression models with panel data based on previous studies, in which the dependent variable is the cumulative abnormal return (CAR) and the independent explanatory variables, the standardized unexpected earnings (SUE) and the share participation of investors (SPI). The hypothesis test was applied to verify whether the CAR average was different from zero, as well as it was applied the Hausman’s test to identify the variable or fixed effect of panel data. It was verified that the coefficients of SPI and CAR were negative and significative to 1% and 10%. Thus, it was evidenced for the period and companies investigated that the institutional investors contribute for the market efficiency, as well as for the informative content of accounting data through the relationship with PEAD.

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