中国股市的星期效应研究

一、引言星期效应是股票市场上普遍存在的一种现象 ,即一周中各交易日股票收益率存在一定规律。西方股市的星期效应一般表现为周一收益率为负数 ,即所谓周末效应。星期效应的存在意味着在不考虑交易成本的前提下 ,基于股票价格的历史数据就可获得一定收益。Ｋｅｌｌｙ(1930 )在《输赢的原因》一文中第一次论及股票市场的周末效应 ,并认为造成这种现象的原因是投资者群体中存在一种在周一出售股票的倾向。Ｃｒｏｓｓ(1973)和Ｆｒｅｎｃｈ(1980 )研究了纽约证券市场的周末效应。Ａｔｈａｎａｓｓａｋｏｓ(1994 )考察了加拿大股市1975— 1989年…

Study on the week effect of China's stock market

Weekly effect is a main anomaly which is relevant to Market Efficiency. This paper analyses the statistic characteristics of short-term return in the two stock markets of China. We find that there exists a weekly effect partially due to the clearing system and information disclosure mechanism. However, comparing with other Asian stock markets, the effect is not very apparent.