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上海股市波动的周日效应检验
Testing for the weekday effect of return volatility in the Shanghai stock market
【摘要】 与以往日历异常现象的研究大多集中在股市收益率上不同,本文对上海股市波动的周日效应进行实证研究,无条件波动的修正Levene检验和条件波动的GARCH模型被应用。结果显示上海股市存在显著的星期一高波动现象,利用混合分布模型对此现象进行了解释,周末信息的积累对星期一交易的影响可能是其高波动的原因。
【Abstract】 This paper investigates the weekday effect of return volatility in the Shanghai stock Market.Levene test and GARCH model are applied.The evidence shows that Significant Monday high volatility exists in the Shanghai stock market.It seems that weekend information accumulation causes the Monday high volatility.
【关键词】 股市波动;
周日效应;
Levene检验;
GARCH模型;
【Key words】 return volatility; weekday effect; Levene test; GARCH model;
【Key words】 return volatility; weekday effect; Levene test; GARCH model;
- 【文献出处】 数理统计与管理 ,Application of Statistics and Management , 编辑部邮箱 ,2004年03期
- 【分类号】F224
- 【被引频次】44
- 【下载频次】507