SEO Risk Dynamics

Murray Carlson, Adlai Fisher and Ron Giammarino

The Review of Financial Studies, 2010, vol. 23, issue 11, 4026-4077

Abstract: We theoretically and empirically investigate firm-level risk dynamics around seasoned equity offerings (SEOs). Empirically, beta increases before SEOs and decreases gradually thereafter. Using real options theory, commitment-to-invest generates a gradual post-issuance beta decline whereas instantaneous investment and time-to-build do not. In a behavioral theory, systematic mispricing can cause increasing pre-issuance and decreasing post-issuance risk but idiosyncratic mispricing cannot. In the empirical cross-section, investment, own-firm runup, SEO proceeds, and primary issuance--associated with the real options theory--predict beta declines. Sentiment proxies have weaker effects in the full sample, but are significant in a post-1996 subsample. SEOs coincide with low firm- and market-volatility, suggesting volatility-timing in corporate decisions. The Author 2010. Published by Oxford University Press on behalf of The Society for Financial Studies. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org., Oxford University Press.

Date: 2010
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