Does Automation Improve Stock Market Efficiency? Evidence from Ghana

Justice Mensah (), Maame Pomaa-Berko and Philip Adom

MPRA Paper from University Library of Munich, Germany

Abstract: As a burgeoning capital market in an emerging economy, automation of the stock market is regarded as a major step towards integrating the financial market as a conduit for economic growth. The automation of the Ghana Stock Exchange (GSE) in 2008 is expected among other things to improve the efficiency of the market. This paper therefore investigates the impact of the automation on the efficiency of the GSE within the framework of the weak-form Efficient Market Hypothesis (EMH) using daily market returns from the Ghana Stock Exchange All-Share index from 2006 to 2011. The Unit Root Random Walk and the GARCH models were used to analyze the efficiency of the GSE in the pre and post automation sample periods. Results show that the GSE was weakly inefficient in both pre and post automation periods, suggesting that the automation of the GSE have not yielded the needed impact towards improving the efficiency of the exchange.

Keywords: Stock; efficiency; automation; Ghana (search for similar items in EconPapers)
JEL-codes: A1 E0 G0 (search for similar items in EconPapers)
Date: 2012-08-19
New Economics Papers: this item is included in nep-afr and nep-mac
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://mpra.ub.uni-muenchen.de/43642/1/MPRA_paper_43642.pdf original version (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:pra:mprapa:43642

Access Statistics for this paper

More papers in MPRA Paper from University Library of Munich, Germany Ludwigstraße 33, D-80539 Munich, Germany. Contact information at EDIRC.
Bibliographic data for series maintained by Joachim Winter ().