This study extends the work of Akella and Greenbaum [Journal of Banking & Finance 12 (1988) 419] through the use of a much larger, nationwide sample of US saving and loan associations and supports their original finding of significant expense-preference behavior in mutual savings and loans during their original study period (1979–80). This study also provides evidence that over the time period of substantial deregulation and changes in the competitive environment in the US financial services industry, expense-preference behavior for savings and loans decreased. The results are consistent with the idea that the removal of barriers that restrict competition should improve managerial efficiency in firms that survive.

This paper studies the linkages between bank performance, connections to powerful politicians, and the degree of economic freedom in a bank’s home state. We find that bank performance is positively related to state economic freedom. We also reconfirm the finding of Gropper et al. (2013) that bank performance is improved by political connections. However, the positive effect of political connections appears to be significantly reduced when there is a higher degree of economic freedom in the state, indicating that political connections may matter less to banks when there is more economic freedom. Economic freedom in a state can have a beneficial effect on state economic growth and hence may outweigh any political connection benefits. However, the declines in state economic freedom in recent years could make political connections potentially more valuable to banks.

Does a politician with power in the U.S. Congress positively affect the value of firms headquartered in their home state? We investigate this question by examining the profitability and stock performance of commercial banks. Banks can be enormously influenced by the political and regulatory environment. We find that banks headquartered in states where a Senator or member of the House of Representatives serves as the chairman on their respective banking committee in Congress outperform banks headquartered in other states. In addition, we find that this “chair effect” is more pronounced when the committee chairs are strongly aligned with other politicians in Congress, when they are more experienced, and when banks are clustered in the home state, suggesting that the potential benefits generated from chairmanship are in more demand. Overall, our results suggest that there are some important value implications of a local politician’s power in Congress.

This article applies finite mixture distributions to the estimation of cost functions for financial firms through time. The mixture approach allows the estimation of multiple technologies when firms' technology choices are unobservable. Technology switching (‘diffusion’) and underlying technical change are simultaneously evaluated. An application to large samples of U.S. banks for the years 1982–1986 illustrates the approach. Results suggest banks switch to lower cost production technologies when unburdened by strict branching regulations.

This paper presents a technique of cost-function estimation, based on the theory of finite mixture distributions, which allows for the simultaneous existence of multiple technologies of production when the researcher does not know which observations correspond to which technologies. The finite mixture technique provides estimates of the proportions of firms using the various technologies, facilitates comparisons between technologies, and preserves the traditional interpretations of cost estimation. After describing the mixture procedure, the technique is illustrated on a large sample of savings and loan associations, and it is concluded that this industry exhibits multiple technologies of production. Copyright 1991 by MIT Press.