This paper finds evidence of return predictability across economically linked firms. We test the hypothesis that in the presence of investors subject to attention constraints, stock prices do not promptly incorporate news about economically related firms, generating return predictability across assets. Using a data set of firms' principal customers to identify a set of economically related firms, we show that stock prices do not incorporate news involving related firms, generating predictable subsequent price moves. A long-short equity strategy based on this effect yields monthly alphas of over 150 basis points. Copyright (c) 2008 The American Finance Association.
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Volume (Year): 63 (2008) Issue (Month): 4 (08) Pages: 1977-2011 Download reference. The following formats are available: HTML
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