The U.S. business cycle is characterized by the general increase and decrease of activity across all industries. When the pattern of industry comovement (documented here) is compared to corresponding properties of multi-sector growth models, a striking mismatch appears. Simply put, the basic...

Aggregate and sectoral comovement are central features of business cycle data. Therefore, the ability to generate comovement is a natural litmus test for macroeconomic models. But it is a test that most existing models fail. In this paper we propose a unified model that generates both aggregate...

There is widespread disagreement on the quantitative contribution of news shocks to business- cycle fluctuations. This paper provides a simple identifying restriction, based on inventory dynamics, that tightly pins down the contribution of news shocks to business-cycle volatility. We show that...