Economic theory suggests that gasoline retail markets are prone to collusive behavior. Oligopoly market structures prevail, market interactions occur frequently, prices are highly transparent, and demand is rather inelastic. A recent sector inquiry in Germany backed suspicions of tacit collusion...

Previous empirical evidence which evaluated the accuracy of management earnings or sales forecasts consistently revealed these forecasts to be on average signi cantly overoptimistic. However, all studies analyzed forecasts from public disclosures, which are an important signal to investors and...