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WP 2010/2. Ádám Reiff: Firm-level adjustment costs and aggregate investment dynamics – Estimation on Hungarian data


This paper uses Hungarian data to estimate the structural parameters of a firm-level investment model with a rich structure of adjustment costs, and analyzes whether non-convex adjustment costs have any effect on the aggregate investment dynamics. The main question addressed is whether aggregate profitability shocks (as a result of monetary policy, for example) lead to different aggregate investment dynamics under non-convex and convex adjustment costs. The main finding is that while non-convex adjustment costs make investment lumpier at the firmlevel, they lead to a more flexible adjustment pattern at the aggregate level. This is because the model is calibrated to have the same proportion of inactive (i.e. non-investing) firms under convex and non-convex adjustment costs, but the average size of new investment of active firms is higher under nonconvex adjustment costs.

JEL: E22.
Keywords: capital adjustment costs, lumpy investment, irreversible investment, aggregation.