Asongu, Simplice; Odhiambo, Nicholas M. - In: Financial innovation : FIN 5 (2019) 4, pp. 1-22
, more efficient, and unchallenged. In contrast, several studies found that when bank size increases beyond certain … interest margins. This study examines the connection between bank size and efficiency to understand whether that relationship …-overlapping thresholds for bank size. We found two key results. First, bank size increases bank interest rate margins with an inverted U …