内容提要:本文运用描述性统计分析法和ANOVA模型分别对 2016年2月1日至2017年12月31日期间188支股票型开放式基金从负收益、正收益、全部收益三个方面进行周内效应研究。结果显示,在研究期间内样本基金收益周四<周五<周三<周一<周二,存在“周四效应”,即周投者把周四作为定投日期能有效地降低投资成本,增加投资收益。
In this paper, statistical knowledge and ANOVA model are used to study the weekday effect of 188 stock-oriented open-ended funds during the period between February 1st, 2016 and December 31st, 2017 from the aspect of negative return, positive return and total return respectively. The results show that the sample fund returns during the study period are different, the lowest return falls on Thursday, then Friday, Wednesday, Monday and the highest return falls on Tuesday. As a result, there is a “Thursday effect”, that is, weekly investors can effectively reduce investment costs and increase investment returns by taking Thursday as the fixed investment date.
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