We analyze the role of endogenous capital-embodied innovation in macroeconomic dynamics. We first leverage a newly assembled dataset to show that the quality of new capital goods is procyclical because new-product introduction by capital-goods producers drops during recessions. We then develop a...

This paper shows the importance of technological synergies among heterogeneous firms for aggregate fluctuations. First, we document six novel empirical facts using microdata that suggest the existence of important technological synergies between trading firms, the presence of positive...