Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/73994 
Year of Publication: 
2005
Series/Report no.: 
Nota di Lavoro No. 77.2005
Publisher: 
Fondazione Eni Enrico Mattei (FEEM), Milano
Abstract: 
Previous work on the formation and stability of cartels has focused on the case of identical players. This assumption is very restrictive in many economic environments. This paper analyses stability of cartels in games with heterogeneous players and spillovers to non-members. I introduce a sharing rule for coalition payoffs, called optimal sharing which stabilises all cartels that are possibly stable under any rule. Under optimal sharing the grand coalition is the unique stable cartel if spillovers are negative. I introduce a new property, called non-essentiality and determine the set of stable cartels under optimal sharing if spillovers are positive and if the non-essentiality property applies. Finally I analyse cartel stability under optimal sharing in simple public goods game with heterogeneous players. My results show – in contrast to earlier findings for identical players – that large coalitions may well be stable.
Subjects: 
Cartel stability
Coalition formation games with spillovers
Partition function approach
Optimal sharing rule
JEL: 
C72
D72
H41
Document Type: 
Working Paper

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