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Middlemen in Limit Order Markets


  • Albert J. Menkveld

    (VU University Amsterdam)

  • Boyan Jovanovic

    (NYU Economics)


We model high-frequency traders in electronic markets. We ask how the presence of such middlemen may affect welfare. We find that middlemen process public information faster than the average investor. As such, they can play a positive or a negative role. On the positive side, when they enter a market they can raise welfare by solving a pre-existing adverse selection problem. In that case their entry is accompanied by a rise in trade and a fall in bid-ask spreads, and they can raise welfare by up to 30% of the gap between its equilibrium level and its first-best level. On the negative side, they can create or exacerbate an adverse- selection problem, in which case spreads rise and trade declines. Our evidence on this score is mixed. On the one hand, middlemen’s participation lowers spreads but, on the other, it also lowers trade.

Suggested Citation

  • Albert J. Menkveld & Boyan Jovanovic, 2010. "Middlemen in Limit Order Markets," 2010 Meeting Papers 955, Society for Economic Dynamics.
  • Handle: RePEc:red:sed010:955

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    Cited by:

    1. Riccardo Cesari & Massimiliano Marzo & Paolo Zagaglia, 2012. "Effective Trade Execution," Papers 1206.5324,
    2. Robert P. Bartlett, III & Justin McCrary, 2015. "Dark Trading at the Midpoint: Pricing Rules, Order Flow, and High Frequency Liquidity Provision," NBER Working Papers 21286, National Bureau of Economic Research, Inc.
    3. Biais, Bruno & Woolley, Paul, 2012. "High Frequency Trading," IDEI Working Papers 31724, Institut d'Économie Industrielle (IDEI), Toulouse.

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