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Driven to Distraction: Extraneous Events and Underreaction to Earnings NewsDavid A. HirshleiferUniversity of California, Irvine - Paul Merage School of Business Sonya S. LimDePaul University - Department of Finance Siew Hong TeohUniversity of California - Paul Merage School of Business April 16, 2007 3rd Prize, 2007 Chicago Quantitative Alliance Annual Academic Competition Journal of Finance, Forthcoming Abstract: Psychological evidence indicates that it is hard to process multiple stimuli and perform multiple tasks at the same time. This paper tests the investor distraction hypothesis, which holds that the arrival of extraneous news causes trading and market prices to react sluggishly to relevant news about a firm. Our test focuses on the competition for investor attention between a firm's earnings announcements and the earnings announcements of other firms. We find that the immediate stock price and volume reaction to a firm's earnings surprise is weaker, and post-earnings announcement drift is stronger, when a greater number of earnings announcements by other firms are made on the same day. Distracting news has a stronger effect on firms that receive positive than negative earnings surprises. Industry-unrelated news has a stronger distracting effect than related news. A trading strategy that exploits post-earnings announcement drift is unprofitable for announcements made on days with little competing news.
Number of Pages in PDF File: 41 Keywords: limited attention, behavioral finance, investor psychology, capital markets, post-earnings announcement drift, market efficiency JEL Classification: G12, G14, M41, M45 working papers seriesDate posted: April 18, 2007 ; Last revised: October 19, 2008Suggested CitationContact Information
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