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Platform Trading with an OTC Market Fringe


  • Jerome Dugast

    (University of Luxembourg)

  • Pierre-Olivier Weill

    (University of California, Los Angeles)

  • Semih Uslu

    (Johns Hopkins University)


We study the privately and socially optimal participation of investors in a centralized platform or in an over-the-counter (OTC) market. Investors incur costs to trade in the platform, in the OTC market, or in both at the same time. Investors differ from each other in risk-sharing needs and OTC market trading capacities. We show that investors with low risk-sharing needs and large trading capacities endogenously emerge as OTC intermediaries, and have the strongest private incentives to enter the OTC market vs. the trading platform. Investors with strong risk-sharing needs and low trading capacities endogenously emerge as OTC customers, and have the weakest private incentive to enter the OTC market vs. the trading platform. Turning to social welfare, we provide two necessary conditions for customers’ private incentives to be excessively large relative to their social contribution. Mandating or subsidizing trade in a centralized venue can be welfare improving only if these conditions are satisfied. First, investors must differ mostly in terms of OTC trading capacities. Second, participation costs must induce exclusive participation decisions. Based on the empirical trading patterns generated by closed-form examples of our model, we argue that the real-world OTC markets might satisfy the conditions under which mandating or subsidizing centralized trade is welfare improving.

Suggested Citation

  • Jerome Dugast & Pierre-Olivier Weill & Semih Uslu, 2018. "Platform Trading with an OTC Market Fringe," 2018 Meeting Papers 1002, Society for Economic Dynamics.
  • Handle: RePEc:red:sed018:1002

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    References listed on IDEAS

    1. Benjamin Lester & Guillaume Rocheteau & Pierre‐Olivier Weill, 2015. "Competing for Order Flow in OTC Markets," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 47(S2), pages 77-126, June.
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    3. Kei Kawakami, 2013. "Optimal Market Size," Department of Economics - Working Papers Series 1168, The University of Melbourne.
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    6. Bech, Morten L. & Atalay, Enghin, 2010. "The topology of the federal funds market," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 389(22), pages 5223-5246.
    7. Athanasios Geromichalos & Lucas Herrenbrueck, 2016. "Monetary Policy, Asset Prices, and Liquidity in Over‐the‐Counter Markets," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 48(1), pages 35-79, February.
    8. Athanasios Geromichalos & Juan M Licari & Jose Suarez-Lledo, 2007. "Monetary Policy and Asset Prices," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 10(4), pages 761-779, October.
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    Cited by:

    1. Ana Babus & Kinda Cheryl Hachem, 2019. "Markets for Financial Innovation," NBER Working Papers 25477, National Bureau of Economic Research, Inc.
    2. Babus, Ana & Hachem, Kinda, 2019. "Markets for Financial Innovation," CEPR Discussion Papers 13457, C.E.P.R. Discussion Papers.

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