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The Long-Run Underperformance of Seasoned Equity Offerings Revisited

Alon Brav
Duke University, Durham, NC 27708

Christopher Geczy
University of Chicago, Chicago, IL 60637

Paul A. Gompers
Harvard University, Cambridge, MA

ABSTRACT

We investigate the robustness of the long-run underperformance of seasoned equity offering (SEO) firms in a sample of 3,931 events from 1975-1992. The 30% underperformance documented by Loughran and Ritter (1996) and Spiess and Affleck-Graves (1995) is significantly reduced when other benchmarks and return calculations are used. Wealth relatives for equal-weighted five year buy-and-hold returns are 0.82 relative to the S&P 500 over the entire sample period. When SEO returns are value-weighted, wealth relatives versus broad market indexes and industry portfolios increase substantially. Cross-sectional examination of returns shows that underperformance is concentrated in small firms and firms with low book-to-market ratios. Our results point to important tests that may help determine the microeconomic foundations of multifactor asset pricing models and long-run anomalies including value/glamour strategy returns.