Munich Personal RePEc Archive

Aggregation with Cournot competition: an empirical investigation

Koebel, Bertrand and Laisney, François (2016): Aggregation with Cournot competition: an empirical investigation.


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This paper empirically investigates the existence of Cournot equilibrium and the validity of the Le Chatelier-Samuelson (LCS) principle in the aggregate. Whereas two well known existence conditions are statistically rejected, we cannot reject a third, original, condition. We also find some empirical evidence for the LCS principle, as well as both increasing and constant returns to scale for two-digit US manufacturing industries. The results highlight the importance of imperfect competition for understanding aggregate growth, investment and employment.

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