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World energy futures market efficiency and its determinants; evidence from white noise test based on block-wise wild bootstrap approach

Author

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  • Ashutosh Dash
  • Sangram Keshari Jena
  • Aviral Kumar Tiwari
  • Satish Kumar

Abstract

The study examines the time-varying efficiency of nine energy futures traded across different exchanges with varied trade settlement methods and pricing currency using the novel white noise test based on block-wsie wild bootstrap approach. The advantage of using this approach is that it relaxes the assumption of serial independence and the martingale difference sequence. Time-varying efficiency is observed for all nine energy futures consistent with the Adoptive Market Hypothesis (AMH). The three most (least) efficient energy futures based on efficiency ratio are Coal, Gasoline and NaturalGas (WTI, Brent and OmanCrude). Quantile regression analysis shows that the higher the level of illiquidity furthers the level of efficiency towards inefficiency (high level of efficiency) in the case of a less (more) efficient market. A mixed impact of volatility is observed across energy futures. No differential impact is found due to exchange, method of settlement and pricing currency. The robustness of the results is investigated, policy implications are discussed, and further research is recommended.

Suggested Citation

  • Ashutosh Dash & Sangram Keshari Jena & Aviral Kumar Tiwari & Satish Kumar, 2025. "World energy futures market efficiency and its determinants; evidence from white noise test based on block-wise wild bootstrap approach," Applied Economics, Taylor & Francis Journals, vol. 57(53), pages 9019-9033, November.
  • Handle: RePEc:taf:applec:v:57:y:2025:i:53:p:9019-9033
    DOI: 10.1080/00036846.2024.2405660
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