Abstract: A system for providing an offer from multiple sources to a user promoting a reward upon satisfying conditions of the offer. The system electronically receives data indicating that a user has selected an offer to receive a reward from an issuer of stock or an intermediary based on stock ownership. Upon identifying the conditions of the offer, the system determines whether the conditions of the offer are satisfied using stock ownership and/or purchase data associated with the user stored in a shareholder database that aggregates ownership information from multiple sources. The stock purchase data stored in the shareholder database represents stock ownership records that are based on multiple sources including among others: purchases made by the user via one or more investment accounts, gifts or grants of stock or convertible instruments, and stock purchased by the user directly from an issuer of stock or on the open-market through the system.