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Bid-Ask Spreads with Indirect Competition among Specialists

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  • Gehrig, Thomas
  • Jackson, Matthew O.

Abstract

We examine the bid-ask quotes offered by specialists (or dealers) who face indirect competition from other specialists who trade in related assets. In the context of a simple model where investors have mean variance preferences, we characterize the equilibrium bids and asks quoted by K specialists in N assets, where some specialists may control more than one asset. We compare the equilibrium spreads as the number (and factor structure) of the assets each specialist controls is varied. It is shown that for some constellations of initial portfolio holdings and asset covariance it is socially preferable to have competing specialists, while for others it is socially preferable to have their actions coordinated (or to have one specialist control several assets). In a simple factor model, we show how the optimal specialist control structure depends on whether the assets trade as substitutes or complements. In some situations it is beneficial to have specialist power concentrated within industries, in other situations, across industries, and in yet other situations, not to be concentrated at all.

Suggested Citation

  • Gehrig, Thomas & Jackson, Matthew O., 1997. "Bid-Ask Spreads with Indirect Competition among Specialists," CEPR Discussion Papers 1648, C.E.P.R. Discussion Papers.
  • Handle: RePEc:cpr:ceprdp:1648
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    References listed on IDEAS

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    Cited by:

    1. Brusco, Sandro & Jackson, Matthew O., 1999. "The Optimal Design of a Market," Journal of Economic Theory, Elsevier, vol. 88(1), pages 1-39, September.
    2. Madhavan, Ananth, 2000. "Market microstructure: A survey," Journal of Financial Markets, Elsevier, vol. 3(3), pages 205-258, August.
    3. Krause, Andreas, 2005. "Optimal stock allocation in specialist markets," Research in Economics, Elsevier, vol. 59(1), pages 23-39, March.
    4. Corwin, Shane A., 2004. "Specialist performance and new listing allocations on the NYSE: an empirical analysis," Journal of Financial Markets, Elsevier, vol. 7(1), pages 27-51, January.
    5. repec:eee:finmar:v:33:y:2017:i:c:p:1-21 is not listed on IDEAS
    6. Goodfellow, Christiane & Schiereck, Dirk & Verrier, Tatjana, 2010. "Does screen trading weather the weather? A note on cloudy skies, liquidity, and computerized stock markets," International Review of Financial Analysis, Elsevier, vol. 19(2), pages 77-80, March.
    7. Coughenour, Jay F. & Saad, Mohsen M., 2004. "Common market makers and commonality in liquidity," Journal of Financial Economics, Elsevier, vol. 73(1), pages 37-69, July.

    More about this item

    Keywords

    Bid-Ask Spread; Indirect Competition; Market Structure;

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates

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