Heterogeneous patterns of the diversification effects are identified across the full distributions of various risk-adjusted performance measures and over time using a quantile regression of U.S. bank holding company data for the period 2000-2010. The net effect of income diversification is...

U.S. bank holding companies (BHCs) have experienced dynamic changes over a period of 2000–2010. We find that the size distribution of sample banks becomes highly positively skewed with a small number of big banks becoming super-sized, and these big banks tend to take extra risk by holding...