A seasoned equity offering (SEO) can improve a firm’s stock liquidity and lower its cost of capital. This paper examines whether SEO firms achieve a liquidity gain and the sources of this gain. It explores the role of liquidity risk in explaining SEO long-run performance. The evidence shows that SEO firms experience significant post-issue improvements in liquidity and reductions in liquidity risk. Size and book-to-market matching fails to control for these liquidity effects, generating the low long-term post-SEO performance documented in the literature. After adjusting for liquidity risk, SEO firms show normal long-term performance.