In the context of an infinitely repeated capacity-constrained price game, we endogenize the composition of a cartel when .rms are heterogeneous in their capacities. When .rms are sufficiently patient, there exists a stable cartel involving the largest .rms. A .rm with sufficiently small capacity...

We appreciate the comments of and discussions with David Collie, Luis Corchón, Jean Gabszewicz, Andrey Minaev, Riccardo Saulle, Attila Tasnádi, Jacques-François Thisse and participants at the Oligo Workshop in Nottingham. All opinions and errors are ours alone.