860 resultados para Volatility Models, Volatility, Equity Markets
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Based on analyses of actual data, we reveal that many Asian developing economies own economic structural features of "non-mono-cultural economy" and the "large primary good sector", which have not been discussed in developing economies RBC literature. We also examine the input-output tables to develop a model reflecting actual developing economies' structures. Referring to the analyses, we construct RBC models of ASEAN countries. Based on the model, we find that approximately half of GDP volatility is attributable to domestic productivity shocks, and the remaining half is attributable to price shocks.
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In this study, we examine the voting behavior in Indonesian parliamentary elections from 1999 to 2014. After summarizing the changes in Indonesian parties' share of the vote from a historical standpoint, we investigate the voting behavior with simple regression models to analyze the effect of regional characteristics on Islamic/secular parties' vote share, using aggregated panel data at the district level. Then, we also test the hypothesis of retrospective economic voting. The results show that districts which formerly stood strongly behind Islamic parties continued to select those parties, or gave preference to abstention over the parties in some elections. From the point of view of retrospective economic voting, we found that districts which experienced higher per capita economic growth gave more support to the ruling parties, although our results remain tentative because information on 2014 is not yet available.
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Crude oil and natural gas have been essential energy sources and play a crucial role in the world economy. Changes in energy prices significantly impact economic growth. This study builds an econometric model to illustrate the substitute relation between crude oil and natural gas markets. Additionally, the determination of the oil and natural gas prices are endogenized, assuming imperfect competition to reflect a real market strategy. Our empirical results show that the overall performance of this system is acceptable, and the model can be applied to policy analysis for determining monetary or energy policy by introducing this model to the more comprehensive system.
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The study examines the Capital Asset Pricing Model (CAPM) for the mining sector using weekly stock returns from 27 companies traded on the New York Stock Exchange (NYSE) or on the London Stock Exchange (LSE) for the period of December 2008 to December 2010. The results support the use of the CAPM for the allocation of risk to companies. Most companies involved in precious metals (particularly gold), which have a beta value less than unity (Table 1), have been actuated as shelter values during the financial crisis. Values of R2 do not shown very explanatory power of fitted models (R2 < 70 %). Estimated coefficients beta are not sufficient to determine the expected returns on securities but the results of the tests conducted on sample data for the period analysed do not appear to clearly reject the CAPM
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The Renewable Energy Directive (2009/28/EC) requires that 20% of the EU's energy needs should come from renewable sources by 2020, and includes a target for the transport sector of 10% from biofuels. This report analyses and discusses the global impacts of this biofuel target on agricultural production, markets and land use, as simulated by three agricultural sector models, AGLINK-COSIMO, ESIM and CAPRI. The impacts identified include higher EU production of ethanol and biodiesel, and of the crops used to produce them, as well as more imports of both biofuels. Trade flows of biofuel feedstocks also change to reflect greater EU demand, including a significant increase in vegetable oil imports. However, as the extra demand is small in world market terms, the impact on world market prices is limited. With the EU biofuel target, global use of land for crop cultivation is higher by 5.2 million hectares. About one quarter is area within the EU, some of which would otherwise have left agriculture.
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Short-run forecasting of electricity prices has become necessary for power generation unit schedule, since it is the basis of every profit maximization strategy. In this article a new and very easy method to compute accurate forecasts for electricity prices using mixed models is proposed. The main idea is to develop an efficient tool for one-step-ahead forecasting in the future, combining several prediction methods for which forecasting performance has been checked and compared for a span of several years. Also as a novelty, the 24 hourly time series has been modelled separately, instead of the complete time series of the prices. This allows one to take advantage of the homogeneity of these 24 time series. The purpose of this paper is to select the model that leads to smaller prediction errors and to obtain the appropriate length of time to use for forecasting. These results have been obtained by means of a computational experiment. A mixed model which combines the advantages of the two new models discussed is proposed. Some numerical results for the Spanish market are shown, but this new methodology can be applied to other electricity markets as well
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This study investigates the effect of price and travel mode fairness and spatial equity in transit provision on the perceived transit service quality, willingness to pay, and habitual frequency of use. Based on the theory of planned behavior, we developed a web-based questionnaire for revealed preferences data collection. The survey was administered among young people in Copenhagen and Lisbon to explore the transit perceptions and use under different economic and transit provision conditions. The survey yielded 499 questionnaires, analyzed by means of structural equation models. Results show that higher perceived fairness relates positively to higher perceived quality of transit service and higher perceived ease of paying for transit use. Higher perceived spatial equity in service provision is associated with higher perceived service quality. Higher perceived service quality relates to higher perceived ease of payment, which links to higher frequency of transit use.
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Projections for world food production and prices play a crucial role to evaluate and tackle future food security challenges. Understanding how these projections will be affected by climate change is the main objective of this study. By means of a bio-economic approach we assess the economic impacts of climate change on agrifood markets, providing both a global analysis and a regionalised evaluation within the EU. To account for uncertainty, we analyse the IPCC emission scenario A1B for the 2030 horizon under several simulation scenarios that differ in (1) the climate projection, from HadleyCM3 (warm) or ECHAM5 (mild) global circulation models; and (2) the influence of CO2 effects. Results of this study indicate that agrifood market projections to 2030 are very sensitive to climate change uncertainties and, in particular to the magnitude of the carbon fertilization effect.
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This study investigates the effect of price and travel time fairness and spatial equity in transit provision on the perceived transit service quality, willingness to pay, and habitual frequency of use. Based on the theory of planned behavior, we developed a web-based questionnaire for revealed preferences data collection. The survey was administered among young people in Copenhagen and Lisbon to explore the transit perceptions and use under different economic and transit provision conditions. The survey yielded 499 questionnaires, analyzed by means of structural equation models. Results show that higher perceived fairness relates positively to higher perceived quality of transit service and higher perceived ease of paying for transit use. Higher perceived spatial equity in service provision is associated with higher perceived service quality. Higher perceived service quality relates to higher perceived ease of payment, which links to higher frequency of transit use.
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Las empresas en situación económica negativa, recurren en España a los Expedientes de Regulación de Empleo que es la figura legal que permite ajustar sus plantillas y cuya utilización se acrecienta en épocas de crisis. El objetivo de esta investigación se focaliza en la integración de la Teoría de Opciones Reales en los proyectos organizativos de recursos humanos, en particular en el estudio y aplicación de la opción de contracción y de la opción de aplazamiento a los proyectos de desarrollo de los Expedientes de Regulación de Empleo. Las opciones reales son una herramienta de gestión, novedosa y contrastada, que posibilita realizar la valoración de los Expedientes de Regulación de Empleo tomando en consideración las incertidumbres futuras, lo que permite cuantificar mejor el resultado de la decisión y supone un avance sobre la valoración realizada de forma estática. Dos aspectos clave ha sido necesario resolver. En primer lugar determinar la fuente de incertidumbre que ponga en valor las opciones reales para este tipo de proyectos y como consecuencia desarrollar los procedimientos para obtener el valor de la opción. La puesta en valor de la opción de contracción permite, a partir de la consideración de la demanda como factor de incertidumbre, desarrollar un modelo que proporciona el valor óptimo del número de contratos de trabajo a extinguir, de modo que sitúa a la organización en la mejor posición para la toma de decisiones. La resolución del modelo se logra con la ayuda de la herramienta “The Newsvendor Model”, que facilita la obtención el valor óptimo. En la aplicación de la opción de aplazamiento se ha concluido asimismo, que la volatilidad de la demanda es la fuente de incertidumbre que hace viable la opción y a partir de dicha incertidumbre se ha desarrollado un procedimiento basado en el árbol binomial que permite obtener su valor. Una vez desarrollados los dos modelos para las opciones de contracción y aplazamiento, se ha elaborado un modelo conjunto con ambas opciones, integrando los resultados obtenidos en cada caso. Para validar los modelos obtenidos se presenta su aplicación al caso real de una empresa en situación económica negativa que requiere la necesidad de llevar a cabo un Expediente de Regulación de Empleo, lo que ha permitido comprobar la utilidad de dichos desarrollos, al obtener resultados que facilitan la toma de decisiones y que presentan soluciones que pueden ser más equilibradas para los trabajadores de la empresa, aspecto clave a tener en cuenta, dado el coste personal, familiar y social de este tipo de proyectos. La integración de las opciones reales en la gestión de recursos humanos tiene un amplio campo de aplicación, dadas las diferentes inversiones que se pueden llevar a cabo sobre el capital humano. Aunque esta investigación se ha focalizado en la opcionalidad de las inversiones para el ajuste de plantilla, existen otro tipo de inversiones en recursos humanos, como son las dedicadas a formación, motivación, adecuación o incorporación de personal, que también estarán sujetas a opcionalidad si existen incertidumbres a futuro. Con el objetivo de avanzar en el estudio y aplicación de las opciones reales a estas inversiones, se presenta un marco conceptual que identifica las bases de partida en lo referente a los retornos de las inversiones y las incertidumbres futuras. Con los resultados obtenidos en esta investigación se entiende que se ha conseguido el objetivo de aplicar la Teoría de Opciones Reales a los Expedientes de Regulación de Empleo y con ello establecer la posibilidad de mejorar las implicaciones sociales de estos proyectos dentro de la empresa y en la sociedad. ABSTRACT During crisis times, like the one Spain has been going through on the last years, the Collective Dismissal Procedure is an important issue to be considered within companies that are having a negative economic situation. This research focuses on the integration of the Real Options Theory for organizational projects in the management of human resources, and particularly the study and inclusion of the option to contract and the deferral option in Collective Dismissal Procedures. The Real Options Theory, an innovative management tool that has been proven as correct, help to improve the assessment of the Collective Dismissal Procedures using the dynamic demand instead of the static demand, giving a better quantification of the decision that is going to be taken. Two main issues which are hoped to be resolve are examined: the search for a source of uncertainty to make the real options viable for this type of projects, and consequently the development of a procedure to obtain the value of the option. The option to contract allows, from the consideration of the demand as a factor of uncertainty, to develop a model obtaining the optimal value in the reduction of the workforce, therefore allowing the organization to place itself in the best position for the decision making. The resolution of this model is achieved with the help of "The Newsvendor Model" tool, which facilitates obtaining the optimal value. The analysis performed in the deferral option also concluded that the volatility of demand is the source of the uncertainty that makes the option viable and the procedure developed by the binomial tree is the tool that enables the value of the option to be found. Once developed two models for contraction and deferment options, a joint model has been developed including both options by integrating the results obtained in each case. To validate the models, the real case of a company in negative economic situation requiring the need to carry out a procedure for collective redundancies is applied. This has demonstrated the usefulness of this kind of development that can deliver results to improve the decision making and provide more balanced solutions for company employees, key consideration given the impact on personal, family life and social environment of these Collective Dismissal Procedures. The integration of real options in the management of human resources has broad scope, given the different investments that can be performed on the human capital. Although this research has focused on the optionality of investments for downsizing, there are other investments in human resources for training, motivation, arrangement or incorporation of staff that are also subject to optionality if there are future uncertainties. With the aim of advancing the study and application of real options to these investments, a conceptual framework is presented that identifies the basis of research in terms of the investment returns and future uncertainties. With the results obtained on this research it is clearly defined the objectives for which this work was started for, the application of the Real Options Theory to the Collective Dismissal Procedure. And thereby achieve the final goal of improving the social impact of these projects within a company and society.
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As várias teorias acerca da estrutura de capital despertam interesse motivando diversos estudos sobre o assunto sem, no entanto, ter um consenso. Outro tema aparentemente pouco explorado refere-se ao ciclo de vida das empresas e como ele pode influenciar a estrutura de capital. Este estudo teve como objetivo verificar quais determinantes possuem maior relevância no endividamento das empresas e se estes determinantes alteram-se dependendo do ciclo de vida da empresa apoiada pelas teorias Trade Off, Pecking Order e Teoria da Agência. Para alcançar o objetivo deste trabalho foi utilizado análise em painel de efeito fixo sendo a amostra composta por empresas brasileiras de capital aberto, com dados secundários disponíveis na Economática® no período de 2005 a 2013, utilizando-se os setores da BM&FBOVESPA. Como resultado principal destaca-se o mesmo comportamento entre a amostra geral, alto e baixo crescimento pelo endividamento contábil para o determinante Lucratividade apresentando uma relação negativa, e para os determinantes Oportunidade de Crescimento e Tamanho, estes com uma relação positiva. Para os grupos de alto e baixo crescimento alguns determinantes apresentaram resultados diferentes, como a singularidade que resultou significância nestes dois grupos, sendo positiva no baixo crescimento e negativa no alto crescimento, para o valor colateral dos ativos e benefício fiscal não dívida apresentaram significância apenas no grupo de baixo crescimento. Para o endividamento a valor de mercado foi observado significância para o Benefício fiscal não dívida e Singularidade. Este resultado reforça o argumento de que o ciclo de vida influência a estrutura de capital.
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Esta dissertação visa deslumbrar uma análise macroeconômica do Brasil, especialmente no que se refere à relação dos índices mensais dos volumes das exportações e das importações com os volumes mensais do PIB, da Taxa SELIC e as Taxas de Câmbio, conforme dados coletados no período de janeiro de 2004 a dezembro de 2014, através de pesquisa literária referente aos históricos sobre cada conceito envolvido no âmbito da macroeconomia das varáveis estudadas. Foi realizado um estudo de caso embasado em dados de sites governamentais, no período delimitado, empregando-se o método de regressão linear, com base na Teoria da correlação de Pearson, demonstrando os resultados obtidos no período do estudo para as varáveis estudadas. Desta maneira, conseguiu-se estudar e analisar como as variáveis dependentes (resposta): volume das exportações e volume das importações estão relacionadas com as varáveis independentes (explicativas): PIB, Taxa Selic e taxa de Câmbio. Os resultados apurados no presente estudo permitem identificar que existe correlação moderada e negativa, quando analisadas a Taxa Selic e a Taxa de Câmbio com os volumes das exportações e das importações, enquanto o PIB apresenta correlação forte e positiva na análise com os volumes das exportações e das importações
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O crescimento de uma empresa pode ser apoiado com recursos de terceiros provenientes do mercado de crédito ou do mercado de capitais. Credores ou potenciais investidores disponibilizam recursos a partir de um processo de avaliação de indicadores de performance. Para as PMEs que consideram o crescimento, conhecer como os indicadores relevantes se comportam ao longo de um ciclo de crescimento é uma questão estratégica. Fatores como tamanho, lucratividade, oportunidades de crescimento, composição de ativos das empresas, risco inerente aos resultados, têm sido vinculados a determinantes de uma estrutura de capital. Assim sendo, este trabalho busca verificar quais indicadores podem nortear o desempenho empresarial de PMEs ao longo de um ciclo de crescimento. Como contribuição original, este trabalho apresenta um painel com indicadores em diferentes estágios de crescimento que resultam na geração de valor para os proprietários e potenciais investidores do mercado de capitais. A amostra inicial é composta por 1.610 empresas para o período de 2010 a 2014. Entretanto, considerando a disponibilidade de informações, a amostra final é composta por 28 empresas de porte médio/grande, 387 empresas grandes e 138 empresas listadas na BM&FBOVESPA, totalizando 553 empresas. A metodologia adotada envolve a classificação de porte de empresa do BNDES como critério para definir ciclo de crescimento, e testes de estatística descritiva, análise fatorial, análise de correlação, regressão múltipla linear e montagem de painel. Como resultado, verificou-se que as variáveis tamanho, composição de ativos e lucratividade são fatores que explicam o endividamento de curto prazo para o estágio médias/grandes empresas. Ainda, que esses fatores explicam o endividamento de longo prazo para os estágios grandes e empresas listadas na BM&FBOVESPA. Tais resultados estão de acordo com estudos prévios, mas as variáveis relacionadas a volatilidade e crescimento não foram significantes nos modelos para os estágios de empresas. O painel montado a partir das variáveis de composição de ativos e lucratividade indicou que endividamento de curto prazo, endividamento de longo prazo, receita líquida, retorno sobre o patrimônio líquido e lucros antes de juros, impostos, depreciação e amortização (EBITDA) sinalizam empresas, em cada estágio de ciclo de crescimento do estudo, que buscam o crescimento com rentabilidade acima da média e atendem a critérios valorizados pelo investidor do mercado de capitais. Estes indicadores podem sinalizar o desempenho empresarial de PMEs ao longo de um ciclo de crescimento
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Cette thèse est une collection de trois articles en macroéconomie et finances publiques. Elle développe des modèles d'Equilibre Général Dynamique et Stochastique pour analyser les implications macroéconomiques des politiques d'imposition des entreprises en présence de marchés financiers imparfaits. Le premier chapitre analyse les mécanismes de transmission à l'économie, des effets d'un ré-échelonnement de l'impôt sur le profit des entreprises. Dans une économie constituée d'un gouvernement, d'une firme représentative et d'un ménage représentatif, j'élabore un théorème de l'équivalence ricardienne avec l'impôt sur le profit des entreprises. Plus particulièrement, j'établis que si les marchés financiers sont parfaits, un ré-échelonnement de l'impôt sur le profit des entreprises qui ne change pas la valeur présente de l'impôt total auquel l'entreprise est assujettie sur toute sa durée de vie n'a aucun effet réel sur l'économie si l'état utilise un impôt forfaitaire. Ensuite, en présence de marchés financiers imparfaits, je montre qu'une une baisse temporaire de l'impôt forfaitaire sur le profit des entreprises stimule l'investissement parce qu'il réduit temporairement le coût marginal de l'investissement. Enfin, mes résultats indiquent que si l'impôt est proportionnel au profit des entreprises, l'anticipation de taxes élevées dans le futur réduit le rendement espéré de l'investissement et atténue la stimulation de l'investissement engendrée par la réduction d'impôt. Le deuxième chapitre est écrit en collaboration avec Rui Castro. Dans cet article, nous avons quantifié les effets sur les décisions individuelles d'investis-sement et de production des entreprises ainsi que sur les agrégats macroéconomiques, d'une baisse temporaire de l'impôt sur le profit des entreprises en présence de marchés financiers imparfaits. Dans un modèle où les entreprises sont sujettes à des chocs de productivité idiosyncratiques, nous avons d'abord établi que le rationnement de crédit affecte plus les petites (jeunes) entreprises que les grandes entreprises. Pour des entreprises de même taille, les entreprises les plus productives sont celles qui souffrent le plus du manque de liquidité résultant des imperfections du marché financier. Ensuite, nous montré que pour une baisse de 1 dollar du revenu de l'impôt, l'investissement et la production augmentent respectivement de 26 et 3,5 centimes. L'effet cumulatif indique une augmentation de l'investissement et de la production agrégés respectivement de 4,6 et 7,2 centimes. Au niveau individuel, nos résultats indiquent que la politique stimule l'investissement des petites entreprises, initialement en manque de liquidité, alors qu'elle réduit l'investissement des grandes entreprises, initialement non contraintes. Le troisième chapitre est consacré à l'analyse des effets de la réforme de l'imposition des revenus d'entreprise proposée par le Trésor américain en 1992. La proposition de réforme recommande l'élimination des impôts sur les dividendes et les gains en capital et l'imposition d'une seule taxe sur le revenu des entreprises. Pour ce faire, j'ai eu recours à un modèle dynamique stochastique d'équilibre général avec marchés financiers imparfaits dans lequel les entreprises sont sujettes à des chocs idiosyncratiques de productivité. Les résultats indiquent que l'abolition des impôts sur les dividendes et les gains en capital réduisent les distorsions dans les choix d'investissement des entreprises, stimule l'investissement et entraîne une meilleure allocation du capital. Mais pour être financièrement soutenable, la réforme nécessite un relèvement du taux de l'impôt sur le profit des entreprises de 34\% à 42\%. Cette hausse du taux d'imposition décourage l'accumulation du capital. En somme, la réforme engendre une baisse de l'accumulation du capital et de la production respectivement de 8\% et 1\%. Néanmoins, elle améliore l'allocation du capital de 20\%, engendrant des gains de productivité de 1.41\% et une modeste augmentation du bien être des consommateurs.
Defining Europe's Capital Markets Union. Bruegel Policy Contribution Issue 2014/12, 13 November 2014
Resumo:
The new European Commission has signalled that it will work to create a ‘capital markets union’. This is understood as an agenda to expand the non-bank part of Europe’s financial system, which is currently underdeveloped. The aim in the short term is to unlock credit provision as banks are deleveraging, and in the longer term, to favour a more diverse, competitive and resilient financial system. Direct regulation of individual non-bank market segments (such as securitisation, private placements or private equity) might be useful at the margin, but will not per se lead to significant capital markets development or the rebalancing of Europe’s financial system away from the current dominance by banks. To reach these goals, the capital markets union agenda must be broadened to address the framework conditions for the development of individual market segments. Six possible areas for policy initiative are, in increasing order of potential impact and political difficulty: regulation of securities and specific forms of intermediation; prudential regulation, especially of insurance companies and pension funds; regulation of accounting, auditing and financial transparency requirements that apply to companies that seek external finance; a supervisory framework for financial infrastructure firms, such as central counterparties, that supports market integration; partial harmonisation and improvement of insolvency and corporate restructuring frameworks;and partial harmonisation or convergence of tax policies that specifically affect financial investment.