Mean reversion;
Stock prices;
G-7 stock markets;
Panel stationary test with structural breaks;
UNIT-ROOT TESTS;
GREAT CRASH;
TIME-SERIES;
TRENDS;
SHOCK;
GDP;
D O I:
10.1016/j.matcom.2010.02.010
中图分类号:
TP39 [计算机的应用];
学科分类号:
081203 ;
0835 ;
摘要:
In this study, we use the newly developed and refined panel stationary test with structural breaks to investigate the time-series properties of stock prices for the G-7 stock markets during the 2000-2007 period. The empirical results from numerous earlier panel-based unit root tests which do not take structural breaks into account indicate that stock prices for all the countries we study here are non-stationary; but when we employ panel stationary test with structural breaks, we find the null hypothesis of I(0) stationarity in stock prices cannot be rejected for any of the G-7 stock markets. Our results indicate that the efficient market hypothesis does not hold in these G-7 stock markets. (C) 2010 IMACS. Published by Elsevier B.V. All rights reserved.