Testing Weak-Form Market Efficiency in Emerging Market: Evidence from Botswana Stock Exchange

Posted: 13 Jul 2006 Last revised: 6 Dec 2012

See all articles by Sabur Mollah

Sabur Mollah

Sheffield University Management School, University of Sheffield; Swansea Management School, Swansea University; Hull University Business School; Hull University Business School

Abstract

Market Efficiency is an area of enormous interest in financial literature. Numerous researchers conducted empirical studies in testing weak-form market efficiency in several stock markets and employed various techniques but the empirical evidence is controversial. Triangulation econometric approach is employed to assess the predictability of daily return series of Botswana Stock Exchange (BSE) and to test the null hypothesis of random walk model. The empirical results reject the null hypothesis of random walk model for the daily return series of BSE for the period of 1989-2005 and evidenced serial autocorrelation of return series, which clearly indicate predictability and volatility of security prices of Botswana market. However, the empirical evidence of both non-parametric (Kolmogrov-Smirnov: normality test and run test) and parametric test (Auto-correlation test, Auto-regressive model, ARIMA model) reject the hypothesis of random walk model and indeed violate the notion of weak-form market efficiency.

Keywords: Weak-form market efficiency, emerging market

JEL Classification: G12, G14, G34

Suggested Citation

Mollah, Sabur, Testing Weak-Form Market Efficiency in Emerging Market: Evidence from Botswana Stock Exchange. International Journal of Theoretical and Applied Finance, Vol. 10, No. 6, 2007. Available at SSRN: https://ssrn.com/abstract=912626

Sabur Mollah (Contact Author)

Sheffield University Management School, University of Sheffield ( email )

Conduit Road
Sheffield, Sheffield S10 1FL
United Kingdom

Swansea Management School, Swansea University ( email )

Singleton Park
Swansea, Wales SA2 8PP
United Kingdom

Hull University Business School ( email )

Cottingham Road
Hull, Great Britain HU6 7RX
United Kingdom

Hull University Business School ( email )

Cottingham Road
Hull, Hull HU6 7RX
United Kingdom

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