What do insiders know? Evidence from insider trading around share repurchases and SEOs

Peter Cziraki, Evgeny Lyandres, Roni Michaely

Research output: Contribution to journalArticleResearchpeer-review

24 Citations (Scopus)


We examine the nature of information contained in insider trades prior to corporate events. Insiders' net buying increases before open market share repurchase announcements and decreases before seasoned equity offers. Higher insider net buying is associated with better post-event operating performance, a reduction in undervaluation, and, for repurchases, lower post-event cost of capital. Insider trading also predicts announcement returns and long-term abnormal returns following events. Overall, our results suggest that insider trades before corporate events contain information about changes both in fundamentals and in investor sentiment.

Original languageEnglish
Article number101544
Number of pages24
JournalJournal of Corporate Finance
Publication statusPublished - Feb 2021
Externally publishedYes

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