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Modeling Electronic FX Brokerage as a Fast Order-Driven Marketunder Heterogeneous Private Values and Information

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Abstract

The paper develops a theoretical framework for studying price formation in brokered foreign exchange markets with very high order arrival frequency (to be followed by an application to real data on Czech koruna transactions in subsequent work). I construct a model of an order-driven market with very volatile motives for trade and a large number of (nearly) simultaneous limit and market order submissions. The model is applicable to very frequently traded securities such as high-grade bonds or FX. Investors have a non-trivial distribution of private values for the traded asset as well as heterogeneous information about the parameters of this distribution across traders. I investigate the properties of the mapping from the histogram of private asset values and private information endowments to the inside bid and ask price. Basic relationships between the limit order book, market sell and market buy order flow distributions, expected market order execution prices and the probabilities of a limit order execution at a given price, all as functions of private information, are derived. Traders are risk neutral as long as the transacted quantities are small, so that the limit and the market order decisions within one trading round do not feed back into private values. I formulate the equations that characterize the best ask and bid prices in this environment, as well as establish a number of properties of the equilibrium order book.

Suggested Citation

  • Alexis Derviz, 2007. "Modeling Electronic FX Brokerage as a Fast Order-Driven Marketunder Heterogeneous Private Values and Information," Working Papers IES 2007/16, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, revised May 2007.
  • Handle: RePEc:fau:wpaper:wp2007_16
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    References listed on IDEAS

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    1. Martin D.D. Evans & Richard K. Lyons, 2017. "Order Flow and Exchange Rate Dynamics," World Scientific Book Chapters,in: Studies in Foreign Exchange Economics, chapter 6, pages 247-290 World Scientific Publishing Co. Pte. Ltd..
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    9. Alexis Derviz, 2003. "FOREX Microstructure, Invisible Price Determinants,and the Central Bank's Understanding of Exchange Rate Formation," Working Papers 2003/06, Czech National Bank, Research Department.
    10. Glosten, Lawrence R, 1989. "Insider Trading, Liquidity, and the Role of the Monopolist Specialist," The Journal of Business, University of Chicago Press, vol. 62(2), pages 211-235, April.
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    More about this item

    Keywords

    broker; limit order; market order; market maker; private value; signal;

    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G19 - Financial Economics - - General Financial Markets - - - Other
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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