Abstract: A method for identifying content for an associated group of individuals includes: storing, transaction messages, each including a primary account number, merchant identifier, transaction time, and transaction data; identifying a plurality of transaction groups, each group including transaction messages with a common merchant identifier and where the transaction time is within a predetermined range of time; identifying an account group comprising a plurality of primary account numbers included in transaction messages in each of two or more of the transaction groups; identifying transaction behaviors based the transaction data in each transaction message included in the transaction groups that include a primary account number stored in the account group; identifying a content item based on the transaction behaviors; and electronically transmitting the content item via a communication network.