Some Insiders are Indeed Smart Investors
21 Pages Posted: 16 Jul 2008 Last revised: 31 Jul 2008
Date Written: July 29, 2008
Abstract
Not all insiders are the same; some are more effective than others in processing the information they have access to, and invest their own wealth accordingly. We used a database with transactions from the U.K. market to identify insiders with superior market timing abilities. For the period 1994 to 2006 we showed that informative insider trades can be identified ex-ante through certain characteristics of the transactions and the firm itself. Moreover we showed how outsiders could benefit from this information. We created a long-only portfolio strategy that generated an economically and statistically significant return. In addition, we showed that the insider transactions signal can be used to construct a satellite strategy that enhances the returns of a typical quant investment portfolio.
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