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Is there evidence of insider trading in Australian water markets?

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  • de Bonviller, Simon
  • Zuo, Alec
  • Wheeler, Sarah Ann

Abstract

Insider trading is a much studied form of market manipulation in the financial market literature. However, studies addressing the issue of insider trading in resource markets, and in particular water markets, are rare. This study investigates the occurrence of insider trading practices around important water market allocation announcements in the Goulburn temporary water market trading zone in the Murray–Darling Basin, Australia, which is one of the largest and longest operating water market districts in the world. Nine years of daily water allocation volume and price transactions between 2008 and 2017 are modelled, with some evidence found of abnormal price movements in the 3 or 5 days preceding water allocation announcements, and especially before the introduction of insider trading rules in 2014. However, although the results do suggest some very weak statistically significant evidence that insider trading may still be present in Goulburn water markets post-2014, it is just as feasible that our results may also reflect an increased sophistication of trader behaviour over time.

Suggested Citation

  • de Bonviller, Simon & Zuo, Alec & Wheeler, Sarah Ann, 2019. "Is there evidence of insider trading in Australian water markets?," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 60(2), April.
    • Handle: RePEc:ags:aareaj:333771
    DOI: 10.22004/ag.econ.333771
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