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Modelling conditional correlations in the volatility of Asian rubber spot and futures returns

机译:modelling conditional correlations in the volatility of asian rubber spot and futures returns

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摘要

Asia is presently the most important market for the production and consumption of natural rubber. World prices of rubber are subject to not only to changes in demand, but also speculation regarding future markets. Japan and Singapore are the major future markets for rubber, while Thailand is one of the world's largest producers of rubber. As rubber prices are influenced by external markets, it is important to analyse the relationship between the relevant markets in Thailand, Japan and Singapore. The analysis is conducted using several alternative multivariate GARCH models. The empirical results indicate that the constant conditional correlations arising from the CCC model lie in the low to medium range. The results from the VARMA-GARCH model and the VARMA-AGARCH model suggest the presence of volatility spillovers and asymmetric effects of positive and negative return shocks on conditional volatility. Finally, the DCC model suggests that the conditional correlations can vary dramatically over time. In general, the dynamic conditional correlations in rubber spot and futures returns shocks can be independent or interdependent. (c) 2010 IMACS. Published by Elsevier B.V. All rights reserved.
机译:目前,亚洲是天然橡胶生产和消费的最重要市场。世界橡胶价格不仅会受到需求变化的影响,还会受到未来市场投机的影响。日本和新加坡是橡胶的主要未来市场,而泰国是世界上最大的橡胶生产国之一。由于橡胶价格受外部市场影响,因此分析泰国,日本和新加坡相关市场之间的关系非常重要。使用几种替代的多元GARCH模型进行分析。实证结果表明,CCC模型产生的恒定条件相关性处于中低范围。 VARMA-GARCH模型和VARMA-AGARCH模型的结果表明存在波动性溢出,以及正向和反向收益冲击对条件波动性的不对称影响。最后,DCC模型表明条件相关性会随着时间变化很大。通常,橡胶现货和期货收益冲击的动态条件相关可以是独立的或相互依存的。 (c)2010年IMACS。由Elsevier B.V.发布。保留所有权利。

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