function with a timevariable stochastic efficiency term we show that positive scale and scope effects from a merger arise only … taken over by others are less efficient than the average bank in the same size class, but exhibit on average the same … efficiency as the acquiring firms. For the post-merger phase, our empirical results provide no evidence for efficiency gains from …

This paper investigates the size-efficiency relation of European cooperative banks during the 2006-2015 period. We … cooperative banks from 12 European countries. This work extends the existing literature by focusing on shape of size-efficiency … European cooperative banks are significantly more cost efficient than their bigger peers and that the size-efficiency relation …

different risk preferences and measure efficiency with a structural model based on utility maximization. Using the almost ideal … demand system, we estimate input and profit demand functions to obtain proxies for expected return and risk. Efficiency is … then measured in this risk-return space. Mean risk-return efficiency is somewhat higher than cost and considerably higher …

We analyze the stability of efficiency rankings of German universal banks between …

We investigate the consistency of efficiency scores derived with two competing frontier …