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Evidence on Quasi-Private Information and Insider TradingMartha L. CarterInstitutional Shareholder Services Sattar MansiVirginia Polytechnic Institute & State University David M. ReebNational University of Singapore; Temple University March 24, 2009 Financial Analysts Journal, Vol. 59, No. 3, May/June 2003 Abstract: We investigated the informational content of corporate insider buying activity and concluded that the market impact of insider transactions varies with the length of interval between insider buy transactions and the disclosure of information to the public. Analysis of a sample obtained from the Washington Services Insider Trade database indicates that (1) the informational content of insider transactions leaks out prior to the U.S. SEC announcement, (2) information leakage is positively associated with the length of the interval between the insider buying activity and the SEC announcement, (3) information leakage for CEOs and other officers differs only marginally, and (4) those insiders with the longest delay in reporting have the greatest total impact on stock prices. Our findings suggest that insiders are able to use their disclosure timing to manipulate the stock-price impact of their buying activity.
Number of Pages in PDF File: 22 Keywords: Portfolio Management, equity strategies, Portfolio Management, trading and execution Accepted Paper SeriesDate posted: September 30, 2003 ; Last revised: March 24, 2009Suggested CitationContact Information
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