Revisiting Share Market Efficiency: Evidence from the New Zealand Australia, US and Japan Stock Indices | Science Publications

American Journal of Applied Sciences

Jun Zhang¹  Minsoo Lee¹  Au Yong Hue Hwa¹  Christopher Gan¹ 

关键词: Share Returns;    Macroeconomic Variables;    Cointegration;    Granger-causality;   

DOI  :  10.3844/ajassp.2005.996.1002

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

This study aims to re-examine the market efficiencies in New Zealand Stock Exchange (NZSE) and Australia Stock Exchange (ASX) stock indices to investigate whether Groenewold’s^[1] findings still hold in the period after the financial liberalization (January 1990-January 2003). In addition, the study also examines whether the larger US NYSE and Japanese NIKKEI stock indices have any influence on the NZSE and ASX indices. Similar to Groenewold’s findings, we find evidence of weak form efficiency for NZSE and ASX stock indices using the Augmented-Dickey Fuller and Philip-Perron unit root tests. In contrast to Groenewold’s findings, the Engle-Granger cointegration test results suggest that the NZSE stock index is cointegrated with and granger caused by the ASX index, both violating the semi-strong form market efficiency of NZSE. Although the NZSE is a small stock market, its stock index is relatively independent with respect to the NYSE and NIKKEI stock indices.

【 授权许可】

Unknown