This paper examines the extent to which the composition of a country's production and trade differs among its trade partners. For example, does the US export the same bundle of goods to the UK as it does to Japan? If we find high dispersion in a country's export and import bundles with its...

The past twenty years have witnessed the emergence of internet conglomerates fueled by acquisitions. We provide a simple theoretical model to shed some light on this. Following a large literature in management (Wernerfelt, 1984) we endow firms with a set of scarce competencies which drive their...