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Asymmetric long-run effects in the oil industry


Author Info

  • Sofía B. Ramos
  • Helena Veiga


  • Chih-Wei Wang


This paper analyzes long term dependence between the market value of oil firms and oil prices. Applying nonlinear cointegration, the results show that in the long-run oil price hikes and falls show different adjustments to the equilibrium. Using a momentum threshold autoregressive model (MTAR), we find that for oil producing firms, the adjustment is faster for oil price falls than for oil price hikes, but we do not find a difference on the speed of adjustment for oil integrated firms. Moreover, testing for asymmetric cointegration, we also find that oil price falls impact substantially the value of oil producers and integrated firms, but the same is not found for oil price hikes. Overall, the evidence suggests that firm value stays above equilibrium relationship when there are oil price hikes.

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Bibliographic Info

Paper provided by Universidad Carlos III, Departamento de Estadística y Econometría in its series Statistics and Econometrics Working Papers with number ws120502.

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Date of creation: Feb 2012
Date of revision:
Handle: RePEc:cte:wsrepe:ws120502

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Related research

Keywords: Asymmetric cointegration; ECM models; MTAR models; Oil prices; Oil industry;

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