Title: Measuring weak-form of market efficiency: the case of Dhaka stock exchange

Authors: Md. Dulal Miah; Shubha Lal Banik

Addresses: American International University - Bangladesh, Banani, Dhaka, Bangladesh ' American International University - Bangladesh, Banani, Dhaka, Bangladesh

Abstract: This study tests the weak form of efficiency of the Dhaka Stock Exchange (DSE) for daily, weekly and monthly observed and corrected (corrected for thin and non-synchronous trading) returns of DSE General Index (DGEN). The research applies both parametric and nonparametric tests. Results of autocorrelation tests show that the market does not follow random walk, which is supported by the runs test. Variance ratio of weekly observed and corrected returns also confirms the finding. However, daily and monthly observed and corrected returns at homoscedastic and heteroscedastic increments under variance ratio test shows that DSE follows random walk. We further check the robustness of these findings analysing the returns of DSE 20 index. Results obtained here support the conclusions drawn based on DGEN.

Keywords: market efficiency; Dhaka stock exchange; variance ratio; autocorrelation; random walk; Bangladesh; stock markets.

DOI: 10.1504/IJFSM.2013.058069

International Journal of Financial Services Management, 2013 Vol.6 No.3, pp.219 - 235

Received: 09 Aug 2012
Accepted: 29 Jul 2013
Published online: 13 Sep 2014 *

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