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Eur J Oper Res. 2015 Oct 1;246(1):281-292.

Optimal firm growth under the threat of entry.

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Center, Department of Econometrics & Operations Research, Tilburg University, Postbus 90153, Tilburg 5000 LE, The Netherlands ; Department of Economics, University of Antwerp, Prinsstraat 13, 2000 Antwerp, Belgium.
University of Vienna, Oskar-Morgenstern-Platz 1, Vienna 1090, Austria.


The paper studies the incumbent-entrant problem in a fully dynamic setting. We find that under an open-loop information structure the incumbent anticipates entry by overinvesting, whereas in the Markov perfect equilibrium the incumbent slightly underinvests in the period before the entry. The entry cost level where entry accommodation passes into entry deterrence is lower in the Markov perfect equilibrium. Further we find that the incumbent's capital stock level needed to deter entry is hump shaped as a function of the entry time, whereas the corresponding entry cost, where the entrant is indifferent between entry and non-entry, is U-shaped.


Dynamic programming; Economics; Game theory

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