We estimate the structural links between IPO allocations, pre-market information production, and initial underpricing and find that (1) allocation policies favor institutional investors, both in the US and worldwide; (2) increasing institutional allocations results in offer prices that deviate more from the pre-marketing price range; (3) constraints on bankers' discretion reduce institutional allocations and result in smaller price revisions, indicating diminished information production; and (4) initial returns are directly related to information production and inversely related to institutional allocations. Our results indicate that discretionary allocations promote price discovery in the IPO market and reduce indirect issuance costs for IPO firms. r 2002 Elsevier Science B.V. All rights reserved.JEL classification: G32; G15; G24 Keywords: Initial public offerings; Bookbuilding; Underpricing; Intermediation; Allocation policy $ We are especially grateful to the referee for detailed comments that substantially improved the paper. We also thank Francesca Cornelli, William Greene, Michel Habib, Maureen O'Hara, Jay Ritter, G. William Schwert (the editor), and participants at the NYSE 'Global Equity Markets in Transition' conference (Hawaii, 2001), the American Finance Association meetings (Atlanta, 2002), the Third Toulouse Finance Workshop, and seminars at Cambridge University, Johann-Wolfgang-von-Goethe Universit. at Frankfurt, the University of North Carolina at Chapel Hill, Oxford University, the University of Virginia, and the University of Wisconsin-Madison for helpful comments. We wish to thank the many companies, banks, and bourses that made data available. All errors are our own.