Does the mere presence of big banks affect macroeconomic outcomes? Gabaix (2011) shows that idosyncratic shocks can have aggregate effects if the distribution of firm sizes in manufacturing follows a power law distribution. Our contribution is two-fold. First, we expand the theory of granularity...

Does the mere presence of big banks affect macroeconomic outcomes? In this paper, we develop a theory of granularity (Gabaix, 2011) for the banking sector, introducing Bertrand competition and heterogeneous banks charging variable markups. Using this framework, we show conditions under which...

Der antizyklische Kapitalpuffer und der Kapitalerhaltungspuffer wurden für die Verstetigung der Kreditvergabe sowie eine höhere Resilienz des Finanzsystems geschaffen. Fraglich bleibt, wie gut diese Puffer speziell im Abschwung in der Praxis von den Finanzinstituten genutzt werden. Dem...

Following the global financial crisis of 2008/2009, many European countries introduced bank levies to enable financial institutions to share in the costs of future banking crises via resolution and restructuring funds. Simultaneously, bank levies can set an incentive for banks to reduce their...

Since the global financial crisis and the related restructuring of banking systems, bank concentration is on the rise in many countries. Consequently, bank size and its role for macroeconomic volatility (or: stability) is the subject of intense debate. This paper analyzes the effects of...

Does the mere presence of big banks affect macroeconomic outcomes? In this paper, we develop a theory of granularity (Gabaix, 2011) for the banking sector, introducing Bertrand competition and heterogeneous banks charging variable markups. Using this framework, we show conditions under which...

Does the mere presence of big banks affect macroeconomic outcomes? In this paper, we develop a theory of granularity (Gabaix, 2011) for the banking sector, introducing Bertrand competition and heterogeneous banks charging variable markups. Using this framework, we show conditions under which...