Are small or mid size banks more profitable than large banks? How do banks in different regions of the world perform in economically difficult times? 352 banks in Asia, Europe and America are analyzed to illustrate performances differences regarding size of total assets and regional focus on the world. The study also considers the composition of RoE and the influences of the individual factors on profitability. Finally RoE is compared with CIR and Cost of Equity on a global scale.
Fischer et al. (Mon,) studied this question.