We present a calibrated general equilibrium model in which collateral constraints substantially amplify and propagate aggregate shocks through their impact on asset prices and capital allocation. Compared to previous studies, this result is more robust and comes with more realistic interest rate...

We show that an increase in aggregate uncertainty-measured by stock market volatility-reduces productivity growth more in industries that depend heavily on external finance. This effect is larger during recessions, when financing constraints are more likely to be binding, than during expansions....