If you’re trying to discover reasons for why drug prices go up or down, one of the best things to look at is supply and demand. A new federal antitrust lawsuit alleges that several generic drugmakers were colluding in an effort to protect market share and raise prices. To get a better sense of what was happening in the market at the time the alleged collusion took place, it helps to track a drug’s market share over time. Using Medicaid utilization data and other public datasets, we have now launched a new dashboard to provide a crumb trail for those looking to determine the market distribution of drug manufacturers as prices fluctuate.