CONTAGION ACROSS FINANCIAL MARKETS DURING COVID-19: A LOOK AT VOLATILITY SPILLOVERS BETWEEN THE STOCK AND FOREIGN EXCHANGE MARKETS IN SOUTH AFRICA

Chevaughn van der Westhuizen, Renee van Eyden () and Goodness C. Aye
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Chevaughn van der Westhuizen: Department of Economics, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa
Goodness C. Aye: Department of Economics, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa

Annals of Financial Economics (AFE), 2022, vol. 17, issue 01, 1-46

Abstract: The onset of the novel coronavirus pandemic (COVID-19) and previous financial and currency crises have heightened interest in understanding the nature of the interaction of stock market and exchange rate volatility. This paper aims to investigate the interdependence and volatility transmissions between the stock and foreign exchange markets for South Africa over the period of 1979:01–2021:08, including the effect the COVID-19 pandemic has had on the interdependence and volatility transmissions. Through the use of bivariate Exponential Generalized Autoregressive Conditional Heteroscedasticity (EGARCH) modeling, the empirical outcomes from this study provide strong evidence in support of the “stock-orientated†approach, where significant price and volatility spillovers propagate from the stock market into the foreign exchange market, whilst evidence of the “flow-orientated†approach is seen in the second moment and significant shock and asymmetric spillovers from the exchange to stock market are found. The results support the asymmetric and long-range persistence volatility spillover effect and show strong evidence of contagion between stock and foreign exchange markets. These spillovers became more pronounced during the COVID-19 pandemic, confirming heightened contagion in these markets during the periods of crisis. The results heed important implications for not only policymakers who are concerned by the contagion across financial markets and better regulations of these markets to promote economic growth, but also investors and fund managers who seek to hedge investment risks in South Africa.

Keywords: COVID-19 pandemic; stock market returns; exchange rate changes; bivariate EGARCH model; asymmetric volatility spillover (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S2010495222500026

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