Estimating the Returns to Insider Trading: A Performance-Evaluation Perspective

Leslie A. Jeng, Andrew Metrick and Richard Zeckhauser
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Leslie A. Jeng: Boston University School of Management

The Review of Economics and Statistics, 2003, vol. 85, issue 2, 453-471

Abstract: This paper uses performance-evaluation methodology to estimate the returns earned by insiders when they trade their company's stock. Our methods are designed to estimate the returns earned by insiders themselves and thereby differ from the previous insider-trading literature, which focuses on the informativeness of insider trades for other investors. We find that insider purchases earn abnormal returns of more than 6% per year, and insider sales do not earn significant abnormal returns. We compute that the expected costs of insider trading to noninsiders are about 10 cents for a $10,000 transaction. © 2003 President and Fellows of Harvard College and the Massachusetts Institute of Technology.

Date: 2003
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