Abstract: A data processing system and method for implementing and control of a financial instrument having pre-set maturity that provides efficient exposure to common stock at a reduced risk. In a preferred embodiment, the financial instrument is divided into units, each one consisting of a long-dated Treasury STRIP and the common stock of one company. Over its life term, each unit generates income based on the total return of the underlying common stock and can be created or redeemed at any time. The data processing system receives input from the capital market and evaluates the financial instrument, reporting its price to customers. The system further arranges for periodic distributions according to pre-defined distribution schedule and for the creation and redemption of new units. Also disclosed is a data processing system and method for administering a group of such instruments designed to track the performance of specified equity securities.