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Department of Business and Management Science, Norwegian School of Economics (NHH) Discussion Papers, Department of Business and Management Science, Norwegian School of Economics (NHH)

No 2010/6:
Public information and IPO underpricing

Einar Bakke (), Tore E. Leite () and Karin S. Thorburn ()

Abstract: We analyze the effect of public information on rational investors' incentives to reveal private information during the bookbuilding process and their demand for allocations in the IPO. Our model generates several new predictions. First, investors require more underpricing to truthfully reveal positive private information in bear markets than in bull markets (the incentive effect). Second, the fraction of positive private signals and of underpriced IPOs is increasing in market returns (the demand effect). Combined, these two effects can explain why IPO underpricing is positively related to pre-issue market returns, consistent with extant evidence. Using a sample of 5,000 U.S. IPOs from 1981-2008, we show that the empirical implications of the model are borne out in the data.

Keywords: Public information; partial adjustment; underpricing; IPOs; bookbuilding; (follow links to similar papers)

JEL-Codes: G10; G32; (follow links to similar papers)

37 pages, August 24, 2010

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