Oil volatility, oil and gas firms and portfolio diversification

Nikolaos Antonakakis, Juncal Cunado, George Filis, David Gabauer, Fernando Perez De Gracia

Research output: Contribution to journalArticlepeer-review

200 Downloads (Pure)

Abstract

This paper investigates the volatility spillovers and co-movements among oil prices and stock prices of major oil and gas corporations over the period between 18th June 2001 and 1st February 2016. To do so, we use the spillover index approach by Diebold and YilmazDiebold and Yilmaz, 2009 ; Diebold and Yilmaz, 2012, Diebold and Yilmaz, 2014 ; Diebold and Yilmaz, 2015 and the dynamic correlation coefficient model of Engle (2002) so as to identify the transmission mechanisms of volatility shocks and the contagion of volatility among oil prices and stock prices of oil and gas companies, respectively. Given that volatility transmission across oil and major oil and gas corporations is important for portfolio diversification and risk management, we also examine optimal weights and hedge ratios among the aforementioned series. Our results point to the existence of significant volatility spillover effects among oil and oil and gas companies’ stock volatility. However, the spillover is usually unidirectional from oil and gas companies’ stock volatility to oil volatility, with BP, CHEVRON, EXXON, SHELL and TOTAL being the major net transmitters of volatility to oil markets. Conditional correlations are positive and time-varying, with those between each of the aforementioned companies and oil being the highest. Finally, the diversification benefits and hedging effectiveness based on our results are discussed.
Original languageEnglish
Pages (from-to)499-515
JournalEnergy Economics
Volume70
DOIs
Publication statusPublished - 2 Feb 2018

Keywords

  • oil prices
  • oil and gas corporations
  • volatility spillovers
  • volatility co-movement
  • hedging
  • portfolio weights

Fingerprint

Dive into the research topics of 'Oil volatility, oil and gas firms and portfolio diversification'. Together they form a unique fingerprint.

Cite this