The competitive implications of multimarket bank branching

Retail banking markets have traditionally been viewed as locally limited. However, recent studies have found evidence that large multimarket banking organizations tend to offer uniform interest rates for retail deposit accounts throughout the area that they serve, at least within a given state. This uniform pricing phenomenon raises questions about the continued relevance of the concept of local banking markets for both research and antitrust purposes. We address this issue by employing a model designed to explain the pricing behavior of single-market banks that face competition from multimarket banks. Empirical results are found to be consistent with the many implications of the model. We find that even with multimarket banks present in the market, local market concentration influences the pricing behavior of single-market banks; however, this relationship weakens as the market share of multimarket banks grows. We also find that, on average, multimarket banks offer lower deposit interest rates than do single-market banks operating in the same market, and, in most cases, greater multimarket bank presence is associated with lower deposit interest rates offered by single-market banks.