MAC-Philadelphia National Bank´s strategic venture in shared ATM networks

MAC, the largest single-owner shared ATM network in the US, which is owned and operated by Philadelphia National Bank (PNB), is discussed. The formation and evolution of MAC are described, including the recent acquisition of its two remaining competitors, which made MAC the only local ATM network in its core Pennsylvania and New Jersey marketplaces. The competitive implications are discussed, showing that structural characteristics of the ATM network business appear to limit the opportunity for predatory or monopolistic pricing. Generalizations to other shared services are made