Prior studies attribute the future excess return patterns of R&D firms to either compensation for increased risk from R&D or to mispricing by investors. We suggest a third explanation for the future excess returns of R&D firms. We show that neither the level of R&D investment nor the change in...

Prior studies employ a two period empirical model and interpret the negative association between accruals in period one and returns in period two as evidence that investors misprice the information contained in accruals. In contrast to prior studies, I employ a three period log-linear model...