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Are there periodically collapsing bubble behaviours in the global coffee market?

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  • Kai-Hua Wang
  • Chi-Wei Su
  • Ran Tao
  • Lin-Na Hao

Abstract

This paper investigates price bubbles in the global coffee market using the generalised supremum augmented Dickey-Fuller test. This approach can recognise multiple bubbles and date their origination and termination. The empirical results show that three bubbles existed in the coffee market from January 1990 to September 2017, during which the coffee price deviated from its fundamental value. Mismatch between supply and demand, speculation, US dollar fluctuations and climate change are applied to explain these bubbles. Corresponding policies, such as the prevention of pests and disease, emergency assistance, market structure improvement and recognition of US dollar fluctuations, should be emphasised to relieve the negative impacts of excessive coffee price volatility.

Suggested Citation

  • Kai-Hua Wang & Chi-Wei Su & Ran Tao & Lin-Na Hao, 2020. "Are there periodically collapsing bubble behaviours in the global coffee market?," Agrekon, Taylor & Francis Journals, vol. 59(1), pages 65-77, January.
    • Handle: RePEc:taf:ragrxx:v:59:y:2020:i:1:p:65-77
    DOI: 10.1080/03031853.2019.1631865
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    Cited by:

    1. Khalid Khan & Chi-Wei Su & Adnan Khurshid & Muhammad Umar, 2022. "Are there bubbles in the vanilla price?," Agricultural and Food Economics, Springer;Italian Society of Agricultural Economics (SIDEA), vol. 10(1), pages 1-16, December.
    2. Aktham Maghyereh & Hussein Abdoh, 2022. "Can news-based economic sentiment predict bubbles in precious metal markets?," Financial Innovation, Springer;Southwestern University of Finance and Economics, vol. 8(1), pages 1-29, December.
    3. Khan, Khalid & Derindere Köseoğlu, Sinem, 2020. "Is palladium price in bubble?," Resources Policy, Elsevier, vol. 68(C).
    4. Kübra Akyol Özcan, 2023. "Food Price Bubbles: Food Price Indices of Turkey, the FAO, the OECD, and the IMF," Sustainability, MDPI, vol. 15(13), pages 1-21, June.
    5. Khan, Khalid & Su, Chi-Wei & Rehman, Ashfaq U., 2021. "Do multiple bubbles exist in coal price?," Resources Policy, Elsevier, vol. 73(C).

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