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Can position limits restrain ‘rogue’ trading?

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  • ap Gwilym, Rhys
  • Ebrahim, M. Shahid

Abstract

This paper studies the imposition of position limits on commodity futures from the perspective of curbing excessive speculation and thus manipulation. We present a simple general equilibrium model in a static rational expectations framework and agent heterogeneity to illustrate that excessive speculation serves to enrich other agents at the expense of the speculator. Position limits, on the contrary, are not only superfluous, but also counter-productive, as they exacerbate market power and lead to a deterioration in efficiency. Position limits not only reduce social welfare but also cannot restrain market manipulation.

Suggested Citation

  • ap Gwilym, Rhys & Ebrahim, M. Shahid, 2013. "Can position limits restrain ‘rogue’ trading?," Journal of Banking & Finance, Elsevier, vol. 37(3), pages 824-836.
  • Handle: RePEc:eee:jbfina:v:37:y:2013:i:3:p:824-836 DOI: 10.1016/j.jbankfin.2012.10.025
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    References listed on IDEAS

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    Cited by:

    1. Prehn Sören & Glauben Thomas & Pies Ingo & Will Matthias & Loy Jens-Peter, 2013. "Betreiben Indexfonds Agrarspekulation? Erläuterungen zum Geschäftsmodell und zum weiteren Forschungsbedarf / Do Index Funds Speculate on Agricultural Futures Markets? Explanatory Notes on the Business," ORDO. Jahrbuch für die Ordnung von Wirtschaft und Gesellschaft, De Gruyter, vol. 64(1), pages 421-442, January.

    More about this item

    Keywords

    Position limits; Dodd–Frank Act; Winner’s curse;

    JEL classification:

    • D53 - Microeconomics - - General Equilibrium and Disequilibrium - - - Financial Markets
    • D58 - Microeconomics - - General Equilibrium and Disequilibrium - - - Computable and Other Applied General Equilibrium Models
    • D74 - Microeconomics - - Analysis of Collective Decision-Making - - - Conflict; Conflict Resolution; Alliances; Revolutions
    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G13 - Financial Economics - - General Financial Markets - - - Contingent Pricing; Futures Pricing

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