Dependence Structure between the Stock Market and the Foreign Exchange Rate Market via Copula Approach

Abstract

在金融研究领域,金融资产收益率之间的相关关系一直是重要议题。研究者们通常使用Pearson统计量来度量收益率之间的线性相关关系,然而事实上,金融资产收益率之间普遍存在非线性关系,因而,使用copula函数来弥补线性测度的缺陷成为当下研究的热点问题。 本文主要使用copula函数来研究2005年至2017年间中国、香港和英国股票市场和外汇市场在极端情况下的联动效应。我们通过ARMA-GARCH过程来拟合股票收益率的时间序列和货币收益率的时间序列,同时使用copula函数拟合股票收益率和外汇收益率之间的相关关系。我们使用了四种不同的copula函数,包括高斯分布、学生t分布、Gumbel分布和R...The dependence structure between asset returns plays decisive role in financial industry. The main widely used measure is Pearson’s linear correlation. However, among other disadvantages it is unable to measure the non-linear dependence across financial assets, which is almost always the case we encounter in reality. To cover shortcomings of ordinary linear dependence, copula functions are used as...学位:经济学硕士院系专业:王亚南经济研究院_金融工程学号:2772015115476

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