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? 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...

The choice between foreign direct investment (FDI) and exports has been a recurrent theme in the literature on international trade, yet few studies have analysed this choice at the level of the individual firm. This paper uses a new dataset to study the FDI-versus-exports decision for banks. We...

The presence of other firms in a foreign market can have a double-edged effect on the profitability of new entrants. Firstly, a larger presence of other firms implies more competition and thus lowers the earnings prospects of new entrants. Secondly, there might be positive spill-over effects...

Insufficient capital buffers of banks have been identified as one main cause for the large systemic effects of the recent financial crisis. Although higher capital is no panacea, it yet features prominently in proposals for regulatory reform. But how do increased capital requirements affect...

Insufficient capital buffers of banks have been identified as one main cause for the large systemic effects of the recent financial crisis. Although higher capital is no panacea, it yet features prominently in proposals for regulatory reform. But how do increased capital requirements affect...