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Implied roughness in the term structure of oil market volatility

Author

Listed:
  • Mesias Alfeus
  • Christina S. Nikitopoulos
  • Ludger Overbeck

Abstract

This paper analyses the attributes and the significance of the roughness of oil market volatility. We employ unspanned stochastic volatility models driven by rough Brownian motions that yield semi-analytical prices for future options entailing efficient calibration applications. By performing a Monte Carlo simulation study, we show that the semi-analytical pricing performs well thus establishing its efficiency for calibration applications. Thus we calibrate option prices written on oil futures and provide empirical evidence of the roughness in oil volatility. Introducing just one additional parameter, the Hurst parameter, indicating the roughness of the volatility improves the calibration by almost a factor of 10. The calibrated option-implied Hurst parameter varies over time, but the entire set of parameters becomes more stable than in the non-rough case corresponding to a fixed Hurst parameter 1/2. These results underscore the importance to model the time dependency of the roughness of oil market volatility.

Suggested Citation

  • Mesias Alfeus & Christina S. Nikitopoulos & Ludger Overbeck, 2024. "Implied roughness in the term structure of oil market volatility," Quantitative Finance, Taylor & Francis Journals, vol. 24(3-4), pages 347-363, January.
  • Handle: RePEc:taf:quantf:v:24:y:2024:i:3-4:p:347-363
    DOI: 10.1080/14697688.2023.2291081
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