antitrust authorities in each market. We are concerned with how the sustainability of collusion in one local market is affected … by the existence of collusion in other markets when they are linked by demand relationships. The interdependence of … collusion sustainability across markets leads to potential externalities in antitrust enforcement across jurisdictions. As a …

of application in separate markets in which a conspirator in the investigated market also engaged in collusion. The …

of application in separate markets in which a conspirator in the investigated market also engaged in collusion. The …

We augment the multi-market collusion model of Bernheim and Whinston (1990) by allowing for firm entry into, and exit … agreement: Collusion at the extensive margin whereby firms collude by avoiding entry into each other's markets or territories …. We characterise parameter values that sustain this type of collusion and identify the assumptions where this collusion is …

We show that multimarket contact facilitates tacit collusion in the US airline industry using two complementary …

are sufficiently high, trade liberalization facilitates collusion. Exactly the opposite is true if, for any given degree … of product substitutability, trade costs are sufficiently low. We also study the dependence of multimarket collusion on …