The Role of Industry Effects in Simultaneous Reversal and Momentum Patterns in One-Month Stock Returns

Marc W. Simpson and Axel Grossman
Authors registered in the RePEc Author Service: Axel Grossmann

Journal of Behavioral Finance, 2016, vol. 17, issue 4, 309-320

Abstract: When stocks are ranked by returns in one month, the portfolio of loser stocks tends to outperform the portfolio of winner stocks in the subsequent month. Yet industry portfolios tend to display momentum. We develop a model of information diffusion among agents with constrained information processing ability that reconciles these well-documented phenomena. We test whether this model or the overreaction hypothesis is consistent with the data. Additionally, a trading strategy based on the model outperforms strategies based on overreaction and on industry momentum. The strategy produces abnormal returns while controlling for market–risk and the size, book value, January, momentum, and liquidity effects.

Date: 2016
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DOI: 10.1080/15427560.2016.1203323

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