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A model of broker's trading, with applications to order flow internalization

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  • Sugato Chakravarty
  • Asani Sarkar

Abstract

Although brokers' trading is endemic in securities markets, the form of this trading differs between markets. Whereas in some securities markets, brokers may trade with their customers in the same transaction (simultaneous dual trading or SDT), in other markets, brokers are only allowed to trade after their customers in a separate transaction (consecutive dual trading or CDT). We show theoretically that informed and noise traders are worse off and brokers are better off while market depth is lower in the SDT market. Thus, given a choice, traders prefer fewer brokers in the SDT market compared to the CDT market. With free entry, however, market depth may be higher in the SDT market provided its entry cost is sufficiently low relative to the CDT market. We study order flow internalization by broker‐dealers, and show that, in the free entry equilibrium, internalization hurts retail customers and market quality.

Suggested Citation

  • Sugato Chakravarty & Asani Sarkar, 2002. "A model of broker's trading, with applications to order flow internalization," Review of Financial Economics, John Wiley & Sons, vol. 11(1), pages 19-36.
    • Handle: RePEc:wly:revfec:v:11:y:2002:i:1:p:19-36
    DOI: 10.1016/S1058-3300(01)00031-3
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    References listed on IDEAS

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    1. Sugato Chakravarty, 1994. "Should actively traded futures contracts come under the dual‐trading ban?," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 14(6), pages 661-684, September.
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    5. Anat R. Admati, Paul Pfleiderer, 1988. "A Theory of Intraday Patterns: Volume and Price Variability," The Review of Financial Studies, Society for Financial Studies, vol. 1(1), pages 3-40.
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    7. Macey, Jonathan R. & O'Hara, Maureen, 1997. "The Law and Economics of Best Execution," Journal of Financial Intermediation, Elsevier, vol. 6(3), pages 188-223, July.
    8. Battalio, Robert & Greene, Jason & Jennings, Robert, 1997. "Do Competing Specialists and Preferencing Dealers Affect Market Quality?," The Review of Financial Studies, Society for Financial Studies, vol. 10(4), pages 969-993.
    9. Kyle, Albert S, 1985. "Continuous Auctions and Insider Trading," Econometrica, Econometric Society, vol. 53(6), pages 1315-1335, November.
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