Stock Return
Mostrando 13-24 de 82 artigos, teses e dissertações.
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13. Differentiated risk models in portfolio optimization: a comparative analysis of the degree of diversification and performance in the São Paulo Stock Exchange (BOVESPA)
Faced with so many risk modeling alternatives in portfolio optimization, several questions arise regarding their legitimacy, utility and applicability. In particular, a question arises involving the adherence of the alternative models with regard to the basic presupposition of Markowitz's classical model, with regard to the concept of diversification as a me
Pesqui. Oper.. Publicado em: 28/06/2012
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14. The relationship between market sentiment index and stock rates of return: a panel data analysis
This article analyzes the relationship between market sentiment and future stock rates of return. We used a methodology based on principal component analysis to create a sentiment index for the Brazilian market with data from 1999 to 2008. The sample consisted of companies listed on BM&F BOVESPA which were grouped into quintiles, each representing a portfoli
BAR - Brazilian Administration Review. Publicado em: 2012-06
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15. Análise comparativa de retornos e prêmios de risco entre os níveis de listagem das empresas no mercado de ações brasileiro
A presente investigação científica discorre acerca da análise comparativa dos segmentos Tradicional, Nível 1, Nível 2 e Novo Mercado da bolsa de valores brasileira. As bases do estudo estão calcadas nas relações entre retornos, risco e prêmios de risco em cada segmento. Para o alcance desse objetivo, foram organizadas carteiras teóricas, cada uma
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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16. O uso de cópulas para gestão de riscos
The large number of publications in finance using currently copulas can be explained by the ability of this technique to deal with statistical evidence of non-normality of the return series of financial assets. The non-normality is evidenced by the "volatility smile" in the series of stock options near expiration, the existence of "heavy tails" in portfolios
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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17. THE RELATIONSHIP BETWEEN IDIOSYNCRATIC RISK AND STOCK RETURNS IN THE BRAZILIAN STOCK MARKET / A RELAÇÃO ENTRE RISCO IDIOSSINCRÁTICO E RETORNO NO MERCADO ACIONÁRIO BRASILEIRO
A relação entre risco idiossincrático e o retorno já foi amplamente estudada em diversas publicações internacionais, contudo, os resultados encontrados são controversos. Para o caso brasileiro, estudos sobre este tema são ainda escassos. Este trabalho procura verificar a relação entre o risco idiossincrático e o retorno das ações no mercado bras
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2011
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18. GENETIC-NEURAL MODEL FOR PORTFOLIO OPTIMIZATION WITH FINANCIAL OPTIONS IN THE BRAZILIAN MARKET / MODELO GENÉTICO-NEURAL PARA OTIMIZAÇÃO DE CARTEIRAS COM OPÇÕES FINANCEIRAS NO MERCADO BRASILEIRO
This dissertation develops an intelligent, quantitative and probabilistic model to determine an optimal composition of a portfolio consisting of a financial asset and options over this asset. Initially we studied the characteristics of the historical distribution of returns and volatility of the most liquid stocks from the BOVESPA Stock Exchange, from Januar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2011
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19. The smoothing hypothesis, stock returns and risk in Brazil
Income smoothing is defined as the deliberate normalization of income in order to reach a desired trend. If the smoothing causes more information to be reflected in the stock price, it is likely to improve the allocation of resources and can be a critical factor in investment decisions. This study aims to build metrics to determine the degree of smoothing in
BAR - Brazilian Administration Review. Publicado em: 2011-03
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20. Análise DuPont como ferramenta de apoio às decisões de investimento em ações
The goal of this research is to examine whether DuPont Analysis indicators have explanatory power regarding the firms future profitability. In addition, we sought to investigate the utility of stock investing strategy, upon signals taken from the components of a DuPont Analysis. The tests were performed in Brazilian publicly traded companies with shares on B
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/2010
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21. O efeito disposição e suas motivações comportamentais: um estudo com base na atuação de gestores de fundos de investimento em ações / The disposition effect and its behavioral motivations: a study based on stock fund managers trading activity
The disposition effect, originally proposed by Shefrin and Statman (1985), predicts that investors tend to sell winning stocks too soon and ride losing stocks too long. Despite the wide range of research evidence about this issue, the reasons that lead investors to act this way is still subject to much controversy between rational and behavioral explanations
Publicado em: 2010
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22. Retorno Acionário e Variáveis Macroeconômicas: uma análise setorial para o Brasil / Stock Returns and Macroeconomic Variables: a sector analysis for Brazil
Este trabalho tem como objetivo principal investigar como choques em variáveis macroeconômicas afetam os retornos acionários de setores específicos da economia brasileira. Com a utilização da metodologia VAR (vetor auto-rregressivo), foram analisadas as respostas ao impulso sobre os índices setoriais, e os resultados obtidos mostram que choques nas va
Publicado em: 2010
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23. Estratégias de Alocação versus Diversificação Simples: Estudo Comparativo do Mercado de Ações Brasileiro / Asset Allocation versus Naive Diversification: Comparative Study of the Brazilian Stock Markets
The paper aims to evaluate the performance of portfolios optimization strategies in relation to naive 1/N portfolio for the Brazilian stock markets. The results indicate that no optimization strategy outperforms the naive portfolio in terms of Sharpe ratio and certaintyequivalent return. Although allocation errors were little on average for the observed peri
Publicado em: 2010
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24. A GESTÃO DA LIQUIDEZ E O SEU REFLEXO NA RENTABILIDADE DAS EMPRESAS PERTENCENTES À BOVESPA ENTRE OS ANOS DE 1999 E 2008 / MANAGEMENT OF LIQUIDITY AND ITS REFLECTION IN THE PROFITABILITY OF COMPANIES BELONGING TO BOVESPA BETWEEN THE YEARS 1999 AND 2008
One of the most problems faced by the financial manager is to maintain a balance between resources and applications of short and long term. Working Capital Management appears as a tool to improve the profitability of the company without representing a loss in their ability to pay. This study aims to evaluate if the financial performance achieved by companies
Publicado em: 2010