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Time and frequency volatility spillovers among commodities: Evidence from pre and during the Russia-Ukraine war

Author

Listed:
  • Yunfei Chen

    (Fudan University)

  • Wei Jiang

    (Qingdao University)

Abstract

This paper studies the volatility spillovers among commodities in both magnitude and timescale before and after the Russia-Ukraine war. We adopt the Diebold and Yilmaz (Int J Forecast 28:57–66, 2012) and the Baruník and Křehlík (J Financ Economet 16:271–296, 2018) method based the 15-min trading data. The results show that the war increases total volatility spillover from 35.54% to 49.00%. Although total spillover is the largest within a day, net spillovers of some commodities are stronger in long term. More importantly, the war increases the importance of precious metals, oil & fats, crops, and agricultural products in different time–frequency domains. The volatility spillover of precious metals as safe-haven assets within one week increases the most. The role of the oil & fats sector changes from a net receiver to a risk transmitter. Meanwhile, crops and agricultural products sectors dominate the overall spillover in the long-term during the ongoing war period. Furthermore, the time-varying results suggest that the impact of the war is durable in the long term.

Suggested Citation

  • Yunfei Chen & Wei Jiang, 2024. "Time and frequency volatility spillovers among commodities: Evidence from pre and during the Russia-Ukraine war," Portuguese Economic Journal, Springer;Instituto Superior de Economia e Gestao, vol. 23(2), pages 249-273, May.
    • Handle: RePEc:spr:portec:v:23:y:2024:i:2:d:10.1007_s10258-023-00242-5
    DOI: 10.1007/s10258-023-00242-5
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