IPOs and Long-Term Relationships: An Advantage of Book Building

There is a global trend in initial public offerings toward the increased use of book building. Relative to other methods such as auctions, a key feature of book building is that the underwriter has total discretion in allocating shares, allowing allocations to be based on long-term relationships between underwriters and investors. In a multiperiod model with endogenous (and costly) information acquisition. I show that the underwriter's ability to lower underpricing depends largely on its ability to favor regular uninformed investors. One implication is that the hybrid book building/open offer method, which is becoming increasingly popular internationally, will lead to higher underpricing than straight book building. Article published by Oxford University Press on behalf of the Society for Financial Studies in its journal, The Review of Financial Studies.