Lack of timeliness and noise as explanations for the low contemporaneuos return-earnings association

We assess earning's lack of timeliness and value-irrelavant noise in earnings as explanations for the weak contemporaneous return-earnings assocation. Earnings lack timeliness because objectivity, verifiability, and conservatism conventions underlie the accounting measurement process. Noise in earnings is uncorrelated with returns in all periods. It likely gets introduced when estimates of future cash flows that differ from the market's estimates are included in earnings determined by accounting rules. Consistent with earning lacking timeliness, we find current and future earnings adjusted for expectational errors explain roughly 3–6 times as much of the annual return variation as current earnings alone.