本文选取一轮完整行情为研究期间,并将其划分为牛市和熊市两个子期间,采用Sharp(1992)提出的基于收益率的投资风格分析法确定基金在两个子期间的实际投资风格,将动态的实际投资风格和宣称的投资风格进行比较,对整个研究期问的“风格漂移”现象进行了研究。在此基础上,考察了“风格漂移”对整个研究期问基金绩效的影响。研究发现,发生明显“风格漂移”的基金绩效要优于未明显发生“风格漂移”基金的绩效。
This paper chooses a sample period and divides it into a bull period and a bear period. Returnbased style analysis forwarded by Sharp (1992) is used to ascertain the funds' actual investment style in the above two periods. Hereby, we can compare the dynamic actual investment style with the announced investment style in order to study its "style drift" phenomena. Furthermore, this paper analyzes how the "style drift" influences its performance. It is revealed that in the sample period the funds which manifest obvious "style drift" perform better than others who do not apparently.