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This paper examines the efficient market hypothesis for the wine market using a novel unit root test while accounting for sharp shifts and smooth breaks in the monthly data. We find evidence of structural shifts and nonlinearity in the wine indices. Contrary to the results from conventional...
Persistent link: https://www.econbiz.de/10011986542
This paper examines the efficient market hypothesis for the wine market using a novel unit root test while accounting for sharp shifts and smooth breaks in the monthly data. We find evidence of structural shifts and nonlinearity in the wine indices. Contrary to the results from conventional...
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by jumps in the price and volatility of crude oil. Data used are daily from 14 February 2011, to 31 July 2019. We detect … sovereign risks of oil-exporters are significantly affected by oil volatility jumps, not by oil price jumps. These findings … suggest that the sovereign risks of oil-exporters are affected by abrupt movements in oil implied volatility, which points to …
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