A system and method for measuring, analyzing, and tracking the past performance of security analysts' earnings estimates and recommendations. The present invention provides a database of historical data relating to security analyst earnings estimate predictions wherein a historical model enables users to view the historical data as a time series of earnings estimates for each analyst selected, for a selected period of time, for a predetermined earnings event. Users may define a model to automatically create enhanced composite estimates wherein an improved prediction of the quantity being estimated, such as company earnings, revenue or cash flow is obtained. Users may view performance screens and historical performance data for a particular contributor or various contributors for a given security. Other views may be available.