[...]Our analysis of how U.S. financial market structure haschanged over the last decade produces more definitiveconclusions. Using firm-level data from a variety of sources, including data collected by central banks, we document that inaggregate, most U.S. wholesale credit and capital markets...

The link between financial market concentration and stability is a topic of great interest to policymakers and other market participants. Are concentrated markets - those where a relatively small number of firms hold large market shares - inherently more prone to disruption? This article...