Evidence on the Presence of Representativeness Bias in Investor Interpretation of Consistency in Sales Growth
研究发现，当公司销售增长模式与基本面不一致时，持续高增长或低增长后会出现显著股价反转，而同样增长但不持续的公司则无此现象，表明代表性偏差影响投资者对增长一致性的解读。
We document that consistent patterns of high or low sales growth that are incongruent with underlying fundamentals are followed by significant stock price reversals. In contrast, no stock return reversals are found for firms that achieve the same level of sales growth in an inconsistent manner. Furthermore, future earnings announcement returns mimic the pattern of abnormal stock returns documented for the Consistent- and Inconsistent-Growth portfolios, respectively, corroborating our main findings. Our results are robust to controls for the magnitude of sales growth, fundamental strength, business cycle risk exposures, and standard risk factors. Our evidence is consistent with representativeness bias affecting investor interpretation of consistency in sales growth patterns. This paper was accepted by Mary Barth, accounting.