Growth of Large Banks, 1930-1960
T HE secular decline in the number of banks and the associated increase in the size of the average bank have raised serious questions about the viability of a banking structure which contains the vast extremes of bank size which are found in the United States. In spite of the widespread interest in this matter, very little statistical evidence has been available to gauge the success with which different size banks have met the challenge of their environments. We have attempted to fill part of this gap in the literature by investigating the performance of large banks during the years 1930 to 1960. In this study, we measured a bank's success in meeting the challenge of its environment by the growth of its assets. This is not the only measure of success but, unlike some other measures (e.g., profits), asset figures are available in published sources and are comparable for all banks. Although we recognize that all banks neither operated in an identical environment nor faced an equal challenge from their environments, we did not attempt in this paper to assess the nature or sources of the comparative growth record of large banks. Our more limited goal was to determine, as a matter of historical fact, whether large banks grew more or less than the banking system as a whole during those years. This analysis of the growth of large banks is based on the performance of the 200 largest banks in the system on particular dates. The 200 largest banks were only .84 per cent of the bank population in 1930 and 1.48 per cent in 1960, but they accounted for more than half of all the commercial banking resources in the country on both dates.' We identified by name each of the 200 largest banks in the country on three different dates, 1930, 1940, and 1950,2 and traced the growth of each bank in each of these top groups (i.e., the 1930 top group, the 1940 top group, and the 1950 top group) for different periods of time up to 1960. A word about some limitations of these basic bank figures is in order.3 First, only three groups of large banks were included in this study. Second, the periods covered for these groups, ranging from ten years for the 1950 top group to thirty years for the 1930 top group, provided three observations on the effects of a ten-year period, two observations on the effects of a twenty-year period, and one observation on the effects of a thirty-year period. Third, the composition of these bank groups overlaps because some of the leading banks on one date were also the leading banks on another date.