A method and system for creating a stock index for a group of investment management companies is disclosed. The method may include obtaining first trade information for each security representative of the group of investment management companies during a first time period, aggregating the first trade information for a predetermined time period, storing the aggregated first trade information, calculating from the aggregated first trade information an index for the group of investment management companies, determining a standardized measure of the index based on the aggregated first trade information obtained in the first time period, and periodically recalculating the index based on second trade information for each security representative of the group of investment management companies during a second time period.