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All Journal International Business and Accounting Research Journal
Chilaka. E. Nwaimo
Department of Financial Management Technology, Federal University of Technology Owerri, Nigeria
Economics, Econometrics & Finance

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Impact of Macroeconomic Variables on Stock Return Volatility: Evidence from Sub-Sahara Africa Peter I. Ali; Samuel M. Nzotta; A. B. C. Akujuobi; Chilaka. E. Nwaimo
International Business and Accounting Research Journal Vol 4, No 2 (2020): July 2020
Publisher : Sekolah Tinggi Ekonomi dan Bisnis Islam Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (730.093 KB) | DOI: 10.35474/ibarj.v4i2.136

Abstract

The main purpose of this paper was to investigate the impact of macroeconomic variables on stock market return volatility in Sub-Sahara markets. The study concentrated on three stock markets including Ghana, Nigeria and South Africa using GARCH-X (1,1) model on monthly data from January 2000 to December 2017. Preliminary analyses from descriptive statistics show that show mean monthly returns are positive for all the stock markets. Skewness coefficients show that the stock returns and interest rates distribution of all Sub-Sahara Africa stock markets are negatively skewed but inflation rate is positively skewed for Nigeria and South Africa, and flat for Ghana. Excess kurtoses are positive for all the stock markets and macroeconomic indicators, and JarqueBera statistics indicate the stock markets’ series and macroeconomic indicators are not normally distributed. The Unit roots tests results indicate that all the stock markets and macroeconomic indicators are first difference stationary. The results of the GARCH-X (1,1) model show that macroeconomic variables do not significantly impact stock market returns volatility in Nigeria, Ghana and South Africa at the 5% significance Level. We therefore recommend that stock market regulators, market participants and investors should concentrate more efforts on other macroeconomic variables aside interest rate and inflation rate, in estimating stock market return volatility in Sub-Sahara Africa
Co-Authors A. B. C. Akujuobi Peter I. Ali Samuel M. Nzotta