A method, program product and system for managing a group of aggregated accounts, each aggregated account held in a different one of a plurality of deposit institutions, each of the aggregated accounts associated with at least one financial entity and holding funds of a plurality of clients of the at least one financial entity, each of the clients having a client asset balance in a respective client account associated with the at least one financial entity, the method comprising: (1) allocating fund deposits to and fund withdrawals from the aggregated accounts, the step of allocating comprising: (a) calculating an aggregated transaction amount based on a total net transaction from among the plurality of the client accounts during a period of time; (b) selecting at least one aggregated account from among the group of aggregated accounts in the different deposit institutions to which to deposit or to withdraw funds based, at least in part, so as to avoid withdrawing funds from or depositing funds to at least a different one of the aggregated accounts in the group; and (2) withdrawing funds from or depositing funds to the at least one of the aggregated accounts based on the allocation.