We use the introduction of a financial transaction tax (FTT) in France in 2012 to test competing theories on its impact. We find no support for the idea that an FTT improves market quality by affecting the composition of trading volume. Instead, our results are in line with the hypothesis that a...

Can securities be settled on a blockchain and, if so, what are the gains relative to existing settlement systems? We consider a blockchain that ensures delivery versus payment by linking transfers of assets with payments and operates using a proof-of-work protocol. The main benefit of a...

The author introduces a central counterparty (CCP) into a model of a repo market. Without the CCP, there exist multiple equilibria in the model. In one of the equilibria, a repo market emerges as bond dealers and cash investors choose to arrange repos in an over-the-counter bond market. In...