Multivariate GARCH estimations of volatility spillover amongst oil prices, exchange rates and news-based uncertainty in the CEE - 3 countries

David Umoru (), Timothy Igbafe Aliu (), Shehu S. Umar () and Beauty Igbinovia ()

Economy, 2025, vol. 12, issue 2, 78-89

Abstract: This study empirically examined the comparative difference in the outcomes of multivariate GARCH estimations in the volatility transmission amongst oil prices, new-based policy uncertainty and exchange rates of the CEE-3 countries. The methodological scope is restricted to BEKK-GARCH, Constant CCC-GARCH and VEC-GARCH. The results of this research indicate significant transfer of volatility from the HUF/EUR, PLN/EUR, and CZK/EUR exchange rates to the price of Brent oil. The BEKK-GARCH results uphold the co-volatility with relation to exchange rates and oil prices in the CEE-3 countries and this was found as highly reciprocating and interdependent. The research also established a reciprocating transmission of volatility between the fluctuating price of oil and news based economic policy uncertainties in Hungary and Czech. The CCC-GARCH model sufficiently estimated oil price volatility spillover on currency rate and its volatility spillover on oil price fluctuation in Czech while VEC-GARCH model estimations sufficiently estimated oil price volatility transmission to exchange rates. The Polish and Czech news-based policy uncertainties were significant in influencing the PLN/EUR and CZK/EUR exchange rates respectively. The BEKK-GARCH and VECH-GARCH model estimations are efficient and hence highly recommended for ascertaining the volatility transmission within the financial markets in the CEE-3 countries.

Keywords: BEKK-GARCH model; CCC-GARCH model; CZK/EUR exchange rate; High-Income countries; HUF/EUR exchange rate; NEWS-based uncertainty; Oil price variation; PLN/EUR exchange rate; VEC-GARCH model; Volatility transmission. (search for similar items in EconPapers)
Date: 2025
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