TY - UNPB ID - mpra4032 N2 - In this paper I ask whether a model of ¯rm capital accumulation with entry and exit calibrated to match the investment regularities of U.S. establishments is capable of generating the dependence of ¯rm dynamics on size and age. Firms face uncertainty in the form of idiosyncratic productivity shocks and are subject to non-convex capital adjustment costs. I solve for the stationary equilibrium to show that the model can account for the simultaneous dependence of industry dynamics on size (once we condition on age) and on age (once we condition on size). A1 - D'Erasmo, Pablo UR - https://mpra.ub.uni-muenchen.de/4032/ KW - firm dynamics; investment; financial constraints AV - public EP - 33 TI - Investment and firm dynamics N1 - Unpublished Y1 - 2006/03/01/ ER -