We develop a theory of sectoral fluctuations driven by the propagation of demand shocks along supply chains with heterogeneous time-to-build production. We solve the model in closed form. Downstream producers respond directly to current demand. Upstream producers, due to time-to-build delays,...

We build a model of endogenous credit cycles arising from the dynamics of adverse selection. Heterogeneous entrepreneurs trade productive assets in an anonymous market subject to financial frictions. Cream-skimming rent-seekers create lemon assets that can be traded. Lemon assets are...