Evidence suggests that banks tend to lend a lot during booms, and very little during recessions. We propose a simple explanation for this phenomenon. We show that, instead of dampening productivity shocks, the banking sector tends to exacerbate them, leading to excessive fluctuations of credit,...

This paper integrates banks into a two-sector neoclassical growth model to account for the fact that a fraction of firms relies on banks to finance their investments. There are four major contributions to the literature. First, although banks' leverage amplifies shocks, the endogenous response...

We integrate bank and bond financing into a two-sector neoclassical growth model to examine the stabilization effect of endogenous bank leverage adjustment. We show that although bank leverage amplifies shocks, the increase of leverage to a decline in bank equity is an automatic stabilizer in...

This paper studies the optimality, sustainability, and distributive consequences of public debt in a simple model of saving and investment with incomplete markets and heterogeneous agents. The model features households and firms, which face non-insurable idiosyncratic productivity shocks. There...