We used extensions of traditional ARCH and GARCH models to examine the difference in the behavior of the first two moments of the price distribution during collusion and the absence of it using prices from two recently discovered conspiracies, citric acid and lysine. According to our results,...

This paper presents two major economic arguments relevant to a decision facing the U.S. Supreme Court in early 2004. In Empagran v. F. Hoffmann-LaRoche the Court must decide whether companies like Empagran, an Ecuadorian animal-feed manufacturer, ought to be permitted to sue for treble damages...

This paper surveys hundreds of published social-science studies of private, hard-core cartels that contain 699 observations of long-run overcharges. The primary finding is that the median cartel overcharge for all types of cartels over all time periods is 25%: 19% for domestic cartels, 32% for...