Using a unique dataset of dealer-level trading data in bookbuilding IPOs, we find strong evidence that lead underwriter trades in IPO firms are significantly related to subsequent IPO abnormal returns. This relation is concentrated among issues in which underwriters' information advantage is...

The regulator plays an active role in the IPO process via its pre-IPO communications with firms, writing 3.8 comment letters per company. To evaluate the regulator's input, we analyze these communications between the SEC and firms using LDA-analysis and KL-divergence. Main topics of SEC concerns...

IPO volume fluctuates substantially over time. This paper compares the extent to which the aggregate capital demands of private firms, the adverse-selection costs of issuing equity, and the level of investor optimism can explain these fluctuations. Empirical tests include both aggregate and...