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Effects of Tobin Taxes in Minority Game markets

  • Ginestra Bianconi
  • Tobias Galla
  • Matteo Marsili
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    We show that the introduction of Tobin taxes in agent-based models of currency markets can lead to a reduction of speculative trading and reduce the magnitude of exchange rate fluctuations at intermediate tax rates. In this regime revenues for the market maker obtained from speculators are maximal. We here focus on Minority Game models of markets, which are accessible by exact techniques from statistical mechanics. Results are supported by computer simulations. Our findings suggest that at finite systems sizes the effect is most pronounced in a critical region around the phase transition of the infinite system, but much weaker if the market is operating far from criticality and does not exhibit anomalous fluctuations.

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    File URL: http://arxiv.org/pdf/cond-mat/0603134
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    Paper provided by arXiv.org in its series Papers with number cond-mat/0603134.

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    Date of creation: Mar 2006
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    Handle: RePEc:arx:papers:cond-mat/0603134
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    1. G. Ehrenstein & F. Westerhoff & D. Stauffer, 2005. "Tobin tax and market depth," Quantitative Finance, Taylor & Francis Journals, vol. 5(2), pages 213-218.
    2. Gudrun Ehrenstein, 2002. "Cont-Bouchaud percolation model including Tobin tax," Papers cond-mat/0205320, arXiv.org.
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    4. Cars Hommes & Carl Chiarella & Xue-Zhong He, 2004. "A Dynamical Analysis of Moving Average Rules," Computing in Economics and Finance 2004 238, Society for Computational Economics.
    5. Cars H. Hommes, 2005. "Heterogeneous Agent Models in Economics and Finance," Tinbergen Institute Discussion Papers 05-056/1, Tinbergen Institute.
    6. Frank Westerhoff, 2004. "The effectiveness of Keynes-Tobin transaction taxes when heterogeneous agents can trade in different markets: A behavioral finance approach," Computing in Economics and Finance 2004 14, Society for Computational Economics.
    7. Philippe BACCHETTA & Eric VAN WINCOOP, 1999. "Does Exchange Rate Stability Increase Trade and Welfare ?," Cahiers de Recherches Economiques du Département d'Econométrie et d'Economie politique (DEEP) 9917, Université de Lausanne, Faculté des HEC, DEEP.
    8. Marsili, Matteo, 2001. "Market mechanism and expectations in minority and majority games," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 299(1), pages 93-103.
    9. Frank Westerhoff, 2003. "Heterogeneous traders and the Tobin tax," Journal of Evolutionary Economics, Springer, vol. 13(1), pages 53-70, 02.
    10. Day, R. & Huang, W., 1988. "Bulls, Bears And Market Sheep," Papers m8822, Southern California - Department of Economics.
    11. De Grauwe, Paul & Grimaldi, Marianna, 2006. "Exchange rate puzzles: A tale of switching attractors," European Economic Review, Elsevier, vol. 50(1), pages 1-33, January.
    12. Mende, Alexander & Menkhoff, Lukas, 2003. "Tobin Tax Effects Seen from the Foreign Exchange Market's Microstructure," International Finance, Wiley Blackwell, vol. 6(2), pages 227-47, Summer.
    13. Cont, Rama & Bouchaud, Jean-Philipe, 2000. "Herd Behavior And Aggregate Fluctuations In Financial Markets," Macroeconomic Dynamics, Cambridge University Press, vol. 4(02), pages 170-196, June.
    14. R. Cont, 2001. "Empirical properties of asset returns: stylized facts and statistical issues," Quantitative Finance, Taylor & Francis Journals, vol. 1(2), pages 223-236.
    15. Johnson, Neil F. & Jefferies, Paul & Hui, Pak Ming, 2003. "Financial Market Complexity," OUP Catalogue, Oxford University Press, number 9780198526650.
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