Evidence on Stock Reaction to Market-Wide Information
The main purpose of this paper is to show that the lack of misreaction to common information in previous research may be due to methodological weakness. As of now, there is no evidence which suggests that stocks under-react to common information at short horizons and over-react at longer horizons. Even if stocks under- and/or over-react to common information at the security level, the reaction pattern may not be evident at the market level if only some stocks have such a pattern and their capitalization is small. We show in this manuscript that the lack of misreaction to common information in previous research may be due to methodological weakness. By focusing on the stock level reaction, we find a statistically and economically significant reaction pattern to common information as the behavioral models suggest. This finding thus complements the findings of stock misreaction to firm-specific information, and may benefit researchers attempting to understand investor behavior.
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Volume (Year): 14 (2011)
Issue (Month): 02 ()
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