Earlier this week, one of the largest acquisition and biggest-ever instance of corporate inversion was announced when Pfizer Inc (PFE) agreed to acquire Allergan Plc (AGN) for $160B. This has been painted by the politicians and the media as a way of avoiding corporate taxes, but one has to wonder what is really causing companies to take such steps to begin with. For some background, the deal announced between Pfizer and Allergan will result in Pfizer’s corporate headquarters moved to Ireland and will eventually save shareholders anywhere between 8% and 10% in taxes. The company does not really lose any business or marketshare in the US by doing this and simply reduces its taxes by taking this step. This move raises a few eyebrows since a Dow Jones Index-listed stock is now relocating.