Relationship between Trading Volume and Asymmetric Volatility in the Korean Stock Market

Ki-Hong Choi, Zhu-Hua Jiang, Sang Hoon Kang, Seong-Min Yoon

Department of Business Administration, Pusan National University, Busan, Korea.
Department of Economics, Pusan National University, Busan, Korea.
Research Institute of Social Criticality, Pusan National University, Busan, Korea.

DOI: 10.4236/me.2012.35077                

Abstract

We investigated the relationship between return volatility and trading volume as a proxy for the arrival of information to the market, based on Korean stock market (KSM) data from January 2000 to December 2010. We measured the rela- tionship between return volatility and trading volume using the GJR-GARCH and exponential GARCH (EGARCH) models. We found a positive relationship between trading volume and volatility, suggesting that trading volume influ- ences the flow of information to the market. This finding supports the validity of the mixture of distributions hy-pothesis. Considering that trading volume can also explain volatility asymmetry, we conclude that trading volume is a useful tool for predicting the volatility dynamics of the KSM.

Keywords

Asymmetry; Volatility; Trading Volume; Mixture of Distribution Hypothesis

Conflicts of Interest

The authors declare no conflicts of interest.

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