文章基本信息

标题：Volatility Asymmetry of Scale Indexes - Taking China as an Example
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作者：Shih-Yung Wei ; Jao-Hong Cheng ; Li-Wei Lin 等
期刊名称：International Journal of Economics and Financial Issues
电子版ISSN：2146-4138
出版年度：2020
卷号：10
期号：4
页码：158-169
DOI：10.32479/ijefi.8200
出版社：EconJournals
摘要：This study focused on the volatility asymmetry of scale indexes in China’s stock market. A total of 12 indexes in four categories were studied during the study period, which lasted from January 1, 2012 to September 30, 2018. The study results showed that large-scale volatility asymmetry almost never occurred but small-scale volatility asymmetry was very significant, which could result from the status of information reception in China. It was easier for large companies to receive information than small companies; therefore, compared with small companies, information asymmetry rarely happened to large companies, leading to the situation where small companies were more likely to have fiercer negative responses to information. However, this study did not divide the study period into bull markets and bear markets, and the addition and subtraction of these two periods could dilute the causes of the disappearance of large-scale volatility asymmetry.
关键词：Volatility asymmetry; Scale indexes; EGARCH