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A Complete Characterization of Pure Strategy Equilibrium in Uniform Price IPO Auctions

  • Ping Zhang

    ()

    (University of Nottingham)

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    Collusive equilibria in share auctions despite being the focus of previous theoretical research, have received little empirical or experimental support. We develop a theoretical model of uniform price initial public offering (IPO) auctions and show that there exists a continuum of pure strategy equilibria where investors with a higher expected valuation bid more aggressively and as a result the market price increases with the market value. The collusive equilibria lie in fact on the boundary of this set, which is obtained under stricter conditions when demand is discrete than in the continuous format. Our results have important implications for the design of IPO auctions.

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    File URL: http://www.nottingham.ac.uk/cedex/documents/papers/2006-06.pdf
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    Paper provided by The Centre for Decision Research and Experimental Economics, School of Economics, University of Nottingham in its series Discussion Papers with number 2006-06.

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    Date of creation: Apr 2006
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    Handle: RePEc:cdx:dpaper:2006-06
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    Web page: http://www.nottingham.ac.uk/economics/cedex/

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    1. Matti Keloharju & Kjell G. Nyborg & Kristian Rydqvist, 2005. "Strategic Behavior and Underpricing in Uniform Price Auctions: Evidence from Finnish Treasury Auctions," Journal of Finance, American Finance Association, vol. 60(4), pages 1865-1902, 08.
    2. David Lucking-Reiley & John A. List, 2000. "Demand Reduction in Multiunit Auctions: Evidence from a Sportscard Field Experiment," American Economic Review, American Economic Association, vol. 90(4), pages 961-972, September.
    3. David Harbord & Natalia Fabra & Nils-Henrik von der Fehr, 2002. "Modeling Electricity Auctions," Game Theory and Information 0206001, EconWPA.
    4. Glenn W. Harrison & John A. List, 2004. "Field Experiments," Journal of Economic Literature, American Economic Association, vol. 42(4), pages 1009-1055, December.
    5. Ilan Kremer, 2004. "Underpricing and Market Power in Uniform Price Auctions," Review of Financial Studies, Society for Financial Studies, vol. 17(3), pages 849-877.
    6. Umlauf, Steven R., 1993. "An empirical study of the Mexican Treasury bill auction," Journal of Financial Economics, Elsevier, vol. 33(3), pages 313-340, June.
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