Abstract: A computerized data processing system includes an external data interface for communicating with nonuser outside sources of investment data and processing such data and delivering such data to a server which processes and stores such investment data in a central databank. Users may access the data stored in the central database which is supported by the server through an external user interface. The receiving, processing, creating and disseminating of data is a shared responsibility which is divided between the external user interface and the server. Multiple users may access the server simultaneously. The preferred embodiments employ a relational database, dynamically linked libraries, and multiple compliance capabilities. The system is particularly suited for use with mutual fund portfolio management and transactional information.