This paper evaluates the relative performance of IBES consensus financial analyst forecasts and forecasts based upon the anticipatory behaviour of security prices, according to two criteria: (a) the accuracy of earnings growth predictions and (b) the contemporaneous association between unexpected earnings and security returns during the forecast year. Results are presented for firms in differing size groups, measured here by market capitalization. The results indicate that neither forecast source is superior to the other in terms of either criterion. There is, however, significant complementarity of financial analyst and price-based forecasts.