摘要
本文利用中国股票市场的48只具有代表性的股票,对股票日收益的GARCH效应进行了实证研究。结果表明,对于交易活跃的市场,股票日交易量可以很好的解释股票日收益的GARCH效应,当在GARCH模型中引入日交易量作为解释变量,我们发现GARCH效应显著降低,但依然显著存在。
In this paper, we study the GARCH effects in daily stock return and the relationship between daily trading volume and volatility. It is shown that the daily trading volume can be a good explanation for GARCH effects. When the daily trading volume is included in the GARCH equation,the GARCH effects and volatiliy cluster decrease, but they still exist.
出处
《运筹与管理》
CSCD
2005年第3期131-134,105,共5页
Operations Research and Management Science