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Currency price risk and stock market returns in Africa: Dependence and downside spillover effects with stochastic copulas

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  • Boako, Gideon
  • Alagidede, Paul

Abstract

We model (extreme) downside currency price risk spillover effects to Africa’s equity markets using value-at-risk (VaR) and conditional value-at-risk (CoVaR) based on stochastic copulas. We find evidence of non-homogenous weak negative dependence between stocks and the US dollar (USD) and Euro (EUR) exchange rates, suggesting that higher (lower) equity prices are accompanied by depreciation (appreciation) of domestic currencies. We report spillover effects for the crisis and post-crisis periods of the recent global financial crisis. It is inferred from the findings that foreign exchange price risk may command premium in some African equity markets, particularly during market turmoil to weaken any hedge capabilities of domestic stock markets for investors. Policy makers and investors seeking to shield a diversified portfolio against adverse effects of extreme market movements in the stock and exchange rate markets in Africa may take a cue from the results.

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  • Boako, Gideon & Alagidede, Paul, 2017. "Currency price risk and stock market returns in Africa: Dependence and downside spillover effects with stochastic copulas," Journal of Multinational Financial Management, Elsevier, vol. 41(C), pages 92-114.
    • Handle: RePEc:eee:mulfin:v:41:y:2017:i:c:p:92-114
    DOI: 10.1016/j.mulfin.2017.06.001
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    6. Ismail Olaleke Fasanya Oluwatomisin Oyewole Taofeek Agbatogun, 2019. "Measuring Return and Volatility Spillovers among Sectoral Stocks in Nigeria," Zagreb International Review of Economics and Business, Faculty of Economics and Business, University of Zagreb, vol. 22(2), pages 71-94, November.
    7. Boako, Gideon & Tiwari, Aviral Kumar & Ibrahim, Muazu & Ji, Qiang, 2019. "Analysing dynamic dependence between gold and stock returns: Evidence using stochastic and full-range tail dependence copula models," Finance Research Letters, Elsevier, vol. 31(C).
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    More about this item

    Keywords

    CoVaR; Currency; Stock markets; Copulas; Downside spillovers; Causality;
    All these keywords.

    JEL classification:

    • C58 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Financial Econometrics
    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • G15 - Financial Economics - - General Financial Markets - - - International Financial Markets

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