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Volatility dynamics under an endogenous Markov-switching framework: a cross-market approach

机译:内源性马尔可夫切换框架下的波动动力学:跨市场方法

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摘要

This study uses an endogenous Markov-switching framework to examine the interrelatedness of the volatility dynamics of the US and Korean markets. Previous literature assumes that the US market implied volatility index is exogenous to the Korean implied volatility index. Here, we allow for correlations between the US and Korean variables and suggest two types of endogeneity, namely endogeneity in the regressors and in the regime-switching probabilities. The estimation results show that both types of endogeneity are present in the US variables and that the parameter estimates are quite different when endogeneity is considered, indicating a serious endogeneity bias in the parameter estimates. The results of the endogeneity test for the regressors show that the effects of global shocks are often persistent and may last for as long as six periods. Sub-period analyses indicate that the degrees of endogeneity were especially strong during the global financial crisis.
机译:本研究采用内源性马尔可夫切换框架来检查美国和韩国市场波动动力学的相互关联。 以前的文献假设美国市场隐含波动性指数对朝鲜隐含波动指数外部。 在这里,我们允许美国和韩国变量之间的相关性,并建议回归的两种内正性,即非生物性以及在制度切换概率中。 估计结果表明,在美国变量中存在两种类型的内能性,并且当考虑内收程时,参数估计是完全不同的,指示参数估计中的严重内限性偏差。 回归者内能性测试的结果表明,全球冲击的影响往往持续,并且可能持续长达六个时期。 子周期分析表明,在全球金融危机期间,内部性程度特别强劲。

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