LACK OF TIMELINESS AND NOISE AS EXPLANATIONS FOR THE LOW CONTEMPORANEOUS RETURN EARNINGS ASSOCIATION

We assess earnings' lack of timeliness and value-irrelevant noise in e arnings as explanations for the weak contemporaneous return-earnings a ssociation. Earnings lack timeliness because objectivity, verifiabilit y, and conservatism conventions underlie the accounting measurement pr ocess. Noise in earnings is uncorrelated with returns in all periods. It likely gets introduced when estimates of future cash flows that dif fer from the market's estimates are included in earnings determined by accounting rules. Consistent with earnings lacking timeliness, we fin d current and future earnings adjusted for expectational errors explai n roughly 3-6 times as much of the annual return variation as current earnings alone.