Heterogeneous firm models are ubiquitous in modern macroeconomics. We revisit a central feature of these models: the idiosyncratic shock process faced by firms. Using a large representative firm-level dataset, we document nonparametrically that the common assumption, a Gaussian AR(1) shock...

This paper studies the distribution of employment growth when firms adjust asymmetrically to dispersed but correlated signals. If hiring decisions respond more to bad news than to good news, both aggregate conditional volatility ("macro-volatility") and the cross sectional dispersion of...