This article brings new insights on the role played by (implied) volatility on the WTI crude oil spot price. An increase in the volatility subsequent to an increase in the oil price (i.e. inverse leverage effect) remains the dominant effect as it might reflect the fear of oil consumers to face...

This paper develops two nonlinear cointegration models - a VECM with structural shift and a threshold cointegration model - applied to carbon spot and futures prices. The results extend the previous findings by Chevallier (2010), who studied this topic with a linear VECM. First, in the VECM with...

This paper analyzes jointly the time series of European Union Allowances (EUAs) and Certified Emissions Reductions (CERs) in a Markov regime-switching environment. The purpose consists in capturing the interactions between the two time series - which have been highlighted in previous literature...