The impact of volatility shifts on market efficiency : the case of four emerging southeast Asian stock markets

Date
2015
Authors
Tan, Hui-Boon
Wong, M.-F.
Elshareif, Elgilani
Journal Title
Journal ISSN
Volume Title
Publisher
Inderscience Enterprises Ltd.
Abstract
The purpose of this paper is to analyse the behaviour of four Southeast Asian stock markets during the intervals of high uncertainties that accompany crises. Our analysis emphasises the effect of unexpected volatility shifts on market efficiency of the four emerging Southeast Asian markets over the past two decades. The purpose of this study is achieved through the iterated-cumulative-sum-of-squares-in-volatility (ICSS-EGARCH-M) model, a new approach in market efficiency studies. The empirical results of this study support rejection of the efficient market hypothesis for these markets, even when unexpected volatility shifts are integrated in the models. The results also provide significant empirical evidence for a positive risk-return tradeoff in the stock markets. Moreover, the stock markets are revealed to be more sensitive to global events than local. Except for the Philippines, asymmetrical responses to good and bad news are also part of the market behaviour for the markets. Copyright © 2015 Inderscience Enterprises Ltd.
Description
This article is not available at CUD collection. The version of scholarly record of this Article is published in Global Business and Economics Review (2015), available online at: https://doi.org/10.1504/GBER.2015.068568.
Keywords
Efficiency, EGARCH-M, ICSS algorithm, Southeast asian stock markets, Volatility
Citation
Tan, H.-B., Wong, M.-F., & Elshareif, E. E. (2015). The impact of volatility shifts on market efficiency: The case of four emerging southeast Asian stock markets. Global Business and Economics Review, 17(2), 203–216. https://doi.org/10.1504/GBER.2015.068568