We develop a general equilibrium model of banks' capital structure, featuring heterogeneous portfolio risk and an imperfectly elastic supply of bank equity stemming from financial market segmentation. In our model, equity is costly and serves as a buffer against insolvency. Banks are ex-ante...

We develop a growth model with endogenous technological progress in which the financial sector plays an explicit role. Thereby we discuss the role of different financial regimes in the growth process. We contrast a bank-dominated financial system with a market-dominated system. In the first one...

We develop a parsimonious model of bubbles based on the assumption of imprecisely known market depth. In a speculative bubble, traders drive the price above its fundamental value in a dynamic way, driven by rational expectations about future price developments. At a previously unknown date, the...