Seasoned public offerings: resolution of the 'new issues puzzle'

The 'new issues puzzle' is that stocks of common stock issuers subsequently underperform nonissuers matched on size and book-to-market ratio. With 7000 + seasoned equity and debt issues, we document that issuer underperformance reflects lower systematic risk exposure for issuing firms relative to the matches. A consistent explanation is that, as equity issuers lower leverage, their exposures to unexpected inflation and default risks decrease, thus decreasing their stocks' expected returns relative to matched firms. Equity issues also significantly increase stock liquidity (turnover), again lowering expected returns relative to nonissuers. We conclude that the 'new issue puzzle' is explained by a failure of the matched-firm technique to provide a proper control for risk. This conclusion is robust to issue characteristics and the choice of factor model framework. (C) 2000 Elsevier Science S.A, All rights reserved. JEL classification: G12; G14; G32.