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Please use this identifier to cite or link to this item: http://hdl.handle.net/2451/27151

Title: Evidence of Informed Trading Prior to Earnings Announcements
Authors: Affleck-Graves, John
Jennings, Robert H.
Mendenhall, Richard R.
Issue Date: Jan-1995
Series/Report no.: FIN-94-001
Abstract: This study examines transactions in stocks during the thirty trading days prior to earnings announcements. Using two methodologies, we find evidence of informed trading for initiators of large transactions (presumably institutions) but not for initiators of small transactions (presumably individuals). Specifically, we find that, relative to a control period, initiators of large transactions tend to buy (sell) stocks prior to earnings announcements that exceed (fall short of) analyst’ forecasts. In addition, the fraction of total stock price movement that occurs on large transactions is substantially higher during the pre-announcement period than during the control period. Results of both tests suggest, contrary to previous research, that some large traders have and use superior private information prior to large earnings surprises.
URI: http://hdl.handle.net/2451/27151
Appears in Collections:Finance Working Papers

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