Lyungmae Choi , Lucile Faurel , Stephen A. Hillegeist
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Insider trading, future earnings, and post-earnings announcement drift
This paper examines the association between insider trading prior to quarterly earnings announcements and the magnitude of the post-earnings announcement drift (PEAD). We conjecture and find that insider trades reflect insiders’ private information about the persistence of earnings news. Thus, insider trades can help investors better understand and incorporate the time-series properties of quarterly earnings into stock prices in a timely and unbiased manner, thereby mitigating PEAD. As predicted, PEAD is significantly lower when earnings announcements are preceded by insider trading. The reduction in PEAD is driven by contradictory insider trades (i.e., net buys before large negative earnings news or net sells before large positive earnings news) and is more pronounced in the presence of more sophisticated market participants. Consistent with investors extracting and trading on insiders’ private information, pre-announcement insider trading is associated with smaller market reactions to future earnings news in each of the four subsequent quarters. Overall, our findings indicate insider trading contributes to stock price efficiency by conveying insiders’ private information about future earnings and especially the persistence of earnings news.
期刊介绍：
The Journal of Accounting and Public Policy publishes research papers focusing on the intersection between accounting and public policy. Preference is given to papers illuminating through theoretical or empirical analysis, the effects of accounting on public policy and vice-versa. Subjects treated in this journal include the interface of accounting with economics, political science, sociology, or law. The Journal includes a section entitled Accounting Letters. This section publishes short research articles that should not exceed approximately 3,000 words. The objective of this section is to facilitate the rapid dissemination of important accounting research. Accordingly, articles submitted to this section will be reviewed within fours weeks of receipt, revisions will be limited to one, and publication will occur within four months of acceptance.
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