A brokerage aggregation system, method and computer program for receiving an electronic message having at least one activity request directed to one or more brokerage service firms and outputting the activity request. The system includes an input interface configured to receive the electronic message in a first predetermined format, a plurality of output interfaces, each configured to connect to a corresponding brokerage service firm, and to transmit the at least one activity request in one of a plurality of second predetermined formats, wherein each of the plurality of second predetermined formats corresponds with a particular brokerage service firm, and a controller configured to receive and extract the at least one activity request from the electronic message, determine to which of the plurality of output interfaces the at least one activity request is to be transferred for subsequent transmission to a destination brokerage service firm, reformat the at least one activity request from the first predetermined format to the second predetermined format corresponding to the output interface previously determined, and transfer the at least one activity request after reformatting to the determined output interface for subsequent transmission to the destination brokerage service firm.