O. Gjolberg et T. Johnsen, Risk management in the oil industry: can information on long-run equilibrium prices be utilized?, ENERG ECON, 21(6), 1999, pp. 517-527
We analyze co-movements between the prices of crude oil and major refined p
roducts during the period 1992-1998. Specifically, we explore the existence
of long-run equilibrium price relationships, and whether deviations from e
stimated equilibrium can be utilized for predictions of short-term price ch
anges and for risk management. The econometric evidence strongly supports t
he hypothesis that crude and product prices are co-integrated. Past deviati
ons from long-term equilibrium are significant in an error correction speci
fication of short-term product price changes. The results represent valuabl
e information for hedging, particularly in integrated oil companies for whi
ch price risk is related to margin variations. (C) 1999 Elsevier Science B.
V. All rights reserved. JEL classification: E32.