We embed the microeconomic decisions associated with investment under uncertainty, capacity utilization, and machine … mean-preserving spread in the productivity of investment raises aggregate investment, productivity, and output. Increases … in uncertainty have important dynamic implications, causing sustained increases in investment and hours and a medium …

one type of capital good to save and invest in, fixed capital investment dynamics are tightly linked to consumption … dynamics, which are similar across lumpy and frictionless investment models. With capital goods heterogeneity, households … capital adjustment frictions. We quantify our arguments by introducing inventories into a two-sector lumpy investment model …