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How and when is dual trading irrelevant?

  • Bernhardt, Dan
  • Taub, Bart

Within a general model of speculative trade, we derive the aggregate consequences of dual traders who process retail liquidity trades and trade on their own account. We prove that dual trading reduces total expected speculator profits unless speculators process all liquidity trade and trade with the same intensity on liquidity trade. In contrast, dual trading does not affect the information content of prices. We show how results generalize when we endogenize (a) speculator information via costly information acquisition about fundamentals or costly processing of liquidity trade, and (b) liquidity trader motives and welfare via endowment shocks.

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Article provided by Elsevier in its journal Journal of Financial Markets.

Volume (Year): 13 (2010)
Issue (Month): 2 (May)
Pages: 295-320

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Handle: RePEc:eee:finmar:v:13:y:2010:i:2:p:295-320
Contact details of provider: Web page: http://www.elsevier.com/locate/finmar

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  1. Sarkar Asani, 1995. "Dual Trading: Winners, Losers, and Market Impact," Journal of Financial Intermediation, Elsevier, vol. 4(1), pages 77-93, January.
  2. Diamond, Douglas W, 1985. " Optimal Release of Information by Firms," Journal of Finance, American Finance Association, vol. 40(4), pages 1071-94, September.
  3. Luis Angel Medrano & Xavier Vives, 2004. "Regulating Insider Trading When Investment Matters," Review of Finance, Springer, vol. 8(2), pages 199-277.
  4. Glosten, Lawrence R. & Milgrom, Paul R., 1985. "Bid, ask and transaction prices in a specialist market with heterogeneously informed traders," Journal of Financial Economics, Elsevier, vol. 14(1), pages 71-100, March.
  5. Rochet, Jean-Charles & Vila, Jean-Luc, 1994. "Insider Trading without Normality," Review of Economic Studies, Wiley Blackwell, vol. 61(1), pages 131-52, January.
  6. Bernhardt, Dan & Taub, Bart, 2008. "Front-running dynamics," Journal of Economic Theory, Elsevier, vol. 138(1), pages 288-296, January.
  7. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-35, November.
  8. Spiegel, Matthew & Subrahmanyam, Avanidhar, 1992. "Informed Speculation and Hedging in a Noncompetitive Securities Market," Review of Financial Studies, Society for Financial Studies, vol. 5(2), pages 307-29.
  9. Fishman, Michael J & Longstaff, Francis A, 1992. " Dual Trading in Futures Markets," Journal of Finance, American Finance Association, vol. 47(2), pages 643-71, June.
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