Multivariate Garch
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Testando o CAPM no mercado acionário brasileiro utilizando GARCH Multivariado entre 1995 e 2012
A pesquisa objetiva testar o CAPM para o mercado de ações brasileiro utilizando o beta estático e o beta dinâmico. A amostra utilizada é composta por 28 ações do índice Ibovespa em vinte de março de 2012 e que foram negociados durante todo o período pesquisado, que vai de 01/01/1995 a 20/03/2012. Foram estimados os betas estáticos e dinâmicos, se
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/10/2012
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2. O efeito contágio da crise do subprime no mercado acionário brasileiro / The contagion effect of subprime crisis on Brazilian stock market
A crescente integração e globalização das finanças, que possibilitaram o aumento da liquidez da economia internacional, foram acompanhadas por cenários instáveis gerados pelas crises financeiras. Estas crises, por sua vez, foram transmitidas, principalmente, para economias emergentes, caracterizadas pela maior fragilidade frente aos movimentos de aver
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/02/2012
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3. IMPACTOS DA CRISE DE 2007/2008 NOS MERCADOS DE CAPITAIS LATINO-AMERICANOS / IMPACTS OF THE 2007/2008 CRISIS ON LATIN AMERICAN EQUITY MARKETS
A grande integração dos mercados mundiais potencializou os efeitos de crises financeiras. A crise financeira de 2007/2008, iniciada nos EUA e depois expandida para grande parte do mundo, teve severo impacto em praticamente todos os mercados do mundo, podendo ser comparada à Grande Depressão ocorrida em 1929. Esse evento abriu novamente as discussões a r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/05/2011
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4. Redes Bayesianas: um método para avaliação de interdependência e contágio em séries temporais multivariadas / Bayesian Networks: a method for evaluation of interdependence and contagion in multivariate time series
This work aims to identify the existence of financial contagion using a metodology of Bayesian networks. Besides Bayesian networks, the analysis of the international marketsinterdependence in times of financial crises, occurred between 1996 and 2009, was modeled using two other techniques - multivariate GARCH models and Copulas models, involving countries in
Publicado em: 2011
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5. Modelos univariados e multivariados para cálculo do Valor-em-Risco de um portifólio / Multivariate and Univariate Models for Forecasting a Portfolios Value-at-Risk
The present work consists of a comparative study of several portfolio Value-at-Risk models. Univariate models, which consider only the portfolio log-returns series, are compared to multivariate models, which consider the log-returns series of each asset individually and their conditional correlations. Additionally, recently proposed models such as PS-GARCH a
Publicado em: 2010
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6. Evaluation of contagion or interdependence in the financial crises of Asia and Latin America, considering the macroeconomic fundamentals
This article investigates the existence of contagion between countries on the basis of an analysis of returns for stock indices over the period 1994-2003. The economic methodology used is that of multivariate GARCH family volatility models, particularly the DCC models in the form proposed by Engle and Sheppard (2001). The returns were duly corrected for a se
Publicado em: 26/01/2009
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7. Transmission of prices and volatility in the marketing of pork / Transmissão de preços e da volatilidade na comercialização da carne suína
The pork chain, despite showing significant technical improvement and competitiveness, is still one of the most volatile sectors of Brazilian agribusiness, and marketing and price fluctuation is one of the main barriers for its development. Accordingly, the present study aimed to analyze the price ratios and volatility among production agents and major meat
Publicado em: 2009
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8. Análise e previsão dos recolhimentos compulsórios sobre recursos à vista / Analysis and Forecast of Reserve Requirements
This dissertation discusses the reserves requirements in Brazil. It analyses and forecasts the top five time series that form these requirements. A VARMAX model with autoregressives lags, moving averages and exogenous variables is used. The interest rate Selic, exchange rate BRL/USD, commerce sales, consumption and income are the exogenous variables. A BEKK
Publicado em: 2008
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9. THE ECONOMIC VALUE OF CONSTANT AND DYNAMIC CONDITIONAL CORRELATION MODEL / O VALOR ECONÔMICO DOS MODELOS DE CORRELAÇÃO CONDICIONAL CONSTANTE E DINÂMICA
At Fleming, Kirby e Ostdiek (2001), evidences are found that volatility timming models, have signicant economic value when comparing with the simple unconditional variance matrix, in a framework of portfolio optimization. Going further, this work analyze if the more complex Constant (CCC) and Dynamic (DCC) Conditional Corrrelation models, suggested respectiv
Publicado em: 2007
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10. Effectiveness analysis of statics and dynamics hedge strategies for Brazilian arabian coffee market / Análise da efetividade das estratégias estáticas e dinâmicas de hedge para o mercado brasileiro de café arábica
This work was the purpose of analyzing the hedge strategies effectiveness, in terms of risks reduction to the arabian coffee market, with the futures markets use. It was observed, a priori, that arabian coffee is among the most risky products of the Brazilian agribusiness. Moreover, it was detected low use of futures mechanism not only for this product, but
Publicado em: 2007
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11. The impact of the sugar markets and American oil in the volatileness of the Brazilian sugar / O impacto dos mercados de açúcar e petróleo americano na volatilidade do açúcar brasileiro
The alcohol fuel became a real and viable alternative to the growing petroleum prices in the global economy. However the production of this kind of fuel requires a great amount of sugar cane, of which Brazil is the major world-wide producer. There are two major outcomes of sugar cane: alcohol fuel and sugar. Whereas the alcohol fuel is a clear substitute to
Publicado em: 2006
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12. HIGH FREQUENCY DATA AND PRICE-MAKING PROCESS ANALYSIS: THE EXPONENTIAL MULTIVARIATE AUTOREGRESSIVE CONDITIONAL MODEL - EMACM / ANÁLISE DE DADOS DE ALTA FREQÜÊNCIA E DO PROCESSO DE FORMAÇÃO DE PREÇOS: O MODELO MULTIVARIADO EXPONENCIAL - EMACM
The availability of high frequency financial transaction data - price, spread, volume and duration -has contributed to the growing number of scientific articles on this topic. The first proposals were limited to pure duration models. Later, the impact of duration over instantaneous volatility was analyzed. More recently, Manganelli (2002) included volume int
Publicado em: 2006